{"id":2140,"date":"2025-09-19T19:42:39","date_gmt":"2025-09-19T17:42:39","guid":{"rendered":"https:\/\/rxquora.com\/en\/?p=2140"},"modified":"2025-09-21T10:14:12","modified_gmt":"2025-09-21T08:14:12","slug":"doxycycline-biotech-uses-side-effects","status":"publish","type":"post","link":"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/","title":{"rendered":"DOXYCYCLINE BIOTECH:Uses,Side Effects,Warnings,Precautions"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>DOXYCYCLINE BIOTECH 100<\/strong> is a prescription, sugar-free, film-coated tablet that contains 100 mg of doxycycline, a broad-spectrum antibiotic in the tetracycline family. Doctors use it to treat many different bacterial infections affecting the chest, urinary tract, eyes, and certain infections spread by ticks, lice, or animals. It is also used for some less common infections named in the source, such as cholera and brucellosis. Because this medicine is <strong>Schedule 4 (S4)<\/strong> in South Africa, it must be used exactly as directed by a healthcare provider.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_it_is_and_what_it_is_used_for\"><\/span>What it is and what it is used for<span class=\"ez-toc-section-end\"><\/span><\/h2><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#What_it_is_and_what_it_is_used_for\" >What it is and what it is used for<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#How_it_works\" >How it works<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Who_should_NOT_use_this_medicine\" >Who should NOT use this medicine<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Warnings_and_precautions_Read_before_use\" >Warnings and precautions (Read before use)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Pregnancy_planning_pregnancy_and_breastfeeding\" >Pregnancy, planning pregnancy, and breastfeeding<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Interactions\" >Interactions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#How_to_take_Step-by-step\" >How to take (Step-by-step)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Missed_dose\" >Missed dose<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Overdose\" >Overdose<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Stopping_treatment_early\" >Stopping treatment early<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Dosing_table\" >Dosing table<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Possible_side_effects\" >Possible side effects<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Serious%E2%80%94seek_urgent_help\" >Serious\u2014seek urgent help<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Common\" >Common<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Less_common\" >Less common<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Frequency_unknown\" >Frequency unknown<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Storage_and_disposal\" >Storage and disposal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#What_the_medicine_contains\" >What the medicine contains<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#Pack_information_and_appearance\" >Pack information and appearance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/#FAQs\" >FAQs<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What it is<\/strong><br>DOXYCYCLINE BIOTECH 100 contains doxycycline, an antibiotic in the tetracycline group. It is designed to stop the growth of bacteria that cause infections.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What it is used for <\/strong><br>Your healthcare provider may prescribe DOXYCYCLINE BIOTECH 100 for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Respiratory tract infections<\/strong>, including:\n<ul class=\"wp-block-list\">\n<li>Sinusitis<\/li>\n\n\n\n<li>Inflammation of the pharynx<\/li>\n\n\n\n<li>Lung infections caused by <em>Mycoplasma<\/em><\/li>\n\n\n\n<li>Parrot fever (psittacosis)<\/li>\n\n\n\n<li>Chronic bronchitis<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Urinary tract infections<\/strong><\/li>\n\n\n\n<li><strong>Sexually transmitted diseases<\/strong><\/li>\n\n\n\n<li><strong>Infections of the eye<\/strong><\/li>\n\n\n\n<li><strong>Other infections<\/strong>, including:\n<ul class=\"wp-block-list\">\n<li>Malaria<\/li>\n\n\n\n<li>Cholera<\/li>\n\n\n\n<li>Brucellosis<\/li>\n\n\n\n<li>Leptospirosis<\/li>\n\n\n\n<li>Fevers caused by lice or ticks<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Rickettsial infections<\/strong>, such as Q fever and tick fever<\/li>\n\n\n\n<li><strong>Rabbit fever<\/strong> (tularaemia), <strong>yaws<\/strong> (a tropical skin infection), and <strong>long-term infections that form sores or abscesses in soft tissue<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Note:<\/em> Use only for conditions your healthcare provider diagnoses and prescribes.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_it_works\"><\/span>How it works <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Doxycycline slows down or stops bacteria from multiplying by blocking the way they make essential proteins. Without these proteins, bacteria cannot grow or spread, and your immune system can clear the infection. Because doxycycline is \u201cbroad-spectrum,\u201d it is active against many different bacteria mentioned in the source.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Who_should_NOT_use_this_medicine\"><\/span>Who should NOT use this medicine<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Do <strong>not<\/strong> take DOXYCYCLINE BIOTECH 100 if any of the following apply:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You are <strong>allergic<\/strong> to doxycycline hyclate, <strong>any tetracycline<\/strong>, or any ingredient in the tablet.<\/li>\n\n\n\n<li>You have <strong>some form of kidney (renal) disease<\/strong>.<\/li>\n\n\n\n<li>You are <strong>pregnant<\/strong> or <strong>breastfeeding<\/strong>.<\/li>\n\n\n\n<li>You are <strong>younger than 12 years<\/strong> (risk of permanent tooth discolouration).<\/li>\n\n\n\n<li>You have <strong>systemic lupus erythematosus<\/strong> (an inflammatory disease of connective tissue).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Children:<\/strong> This medicine should <strong>not<\/strong> be used in children under 12 years.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you are unsure, speak to your doctor or pharmacist before taking the first dose.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Warnings_and_precautions_Read_before_use\"><\/span>Warnings and precautions (Read before use)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tell your healthcare provider about all your medical conditions and medicines. Take special care in the following situations:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sunlight\/UV exposure:<\/strong> Doxycycline can increase skin sensitivity. Avoid direct sun and tanning lamps. Stop and seek advice if you develop a rash or severe sunburn.<\/li>\n\n\n\n<li><strong>Liver disease or medicines affecting the liver:<\/strong> You may need monitoring.<\/li>\n\n\n\n<li><strong>Severe kidney problems:<\/strong> Extra caution is advised.<\/li>\n\n\n\n<li><strong>Serious skin reactions:<\/strong> Seek urgent help if you develop symptoms such as red target-like patches, widespread rash with blisters or peeling (these include erythema multiforme, Stevens-Johnson syndrome, or toxic epidermal necrolysis).<\/li>\n\n\n\n<li><strong>Stomach or bowel problems:<\/strong> If you have diarrhoea during or after treatment\u2014especially severe, prolonged, or bloody diarrhoea\u2014contact your doctor immediately. This can be a sign of bowel inflammation (pseudomembranous colitis) that may occur after antibiotics.<\/li>\n\n\n\n<li><strong>Porphyria:<\/strong> Use only under medical advice due to risk of worsening symptoms.<\/li>\n\n\n\n<li><strong>Retinoids (including isotretinoin):<\/strong> Taking these with doxycycline can raise pressure inside the skull (symptoms: severe headache, visual changes). Do not use together unless your doctor is supervising closely.<\/li>\n\n\n\n<li><strong>Frail or elderly patients:<\/strong> May require closer monitoring.<\/li>\n\n\n\n<li><strong>Fungal infections:<\/strong> Those with vaginal or blood fungal infections may be at risk of worsening thrush; tell your doctor if you develop symptoms.<\/li>\n\n\n\n<li><strong>Oesophagitis\/gullet irritation:<\/strong> This can occur if the tablet lodges in the oesophagus. <strong>Reduce risk<\/strong> by swallowing with a full glass of water, staying upright, and avoiding lying down for at least 30 minutes after each dose.<\/li>\n\n\n\n<li><strong>Sexually transmitted infections (e.g., syphilis):<\/strong> Special diagnostic follow-up may be required; tell your doctor if you are being treated for STIs.<\/li>\n\n\n\n<li><strong>Myasthenia gravis:<\/strong> Use with caution (muscle weakness can affect swallowing and breathing).<\/li>\n\n\n\n<li><strong>Systemic lupus erythematosus (SLE):<\/strong> Listed under \u201cDo not use\u201d; this condition can worsen.<\/li>\n\n\n\n<li><strong>Jarisch\u2013Herxheimer reaction (JHR):<\/strong> If treated for spirochetal infections (such as syphilis, Lyme disease, leptospirosis, or relapsing fever), you may develop fever, chills, headache, muscle pain, or a skin rash within 24 hours of starting antibiotics. This is usually self-limiting but tell your doctor if it occurs.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Driving and using machines<\/strong><br>Do not drive or operate machinery if you experience visual disturbances (such as blurred vision) while taking doxycycline. Only resume these activities once you feel fully safe to do so.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pregnancy_planning_pregnancy_and_breastfeeding\"><\/span>Pregnancy, planning pregnancy, and breastfeeding<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Do not use<\/strong> DOXYCYCLINE BIOTECH 100 if you are pregnant or breastfeeding. If you are pregnant, planning a pregnancy, or think you might be pregnant, speak to your doctor, pharmacist, or another healthcare provider before taking this medicine. The source also notes that pregnancy increases susceptibility to severe doxycycline-induced liver damage.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Interactions\"><\/span>Interactions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Always tell your healthcare provider about <strong>all<\/strong> medicines you take, including complementary or traditional products. The following interactions are listed in the source:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Antacids and mineral supplements<\/strong> containing <strong>aluminium, calcium, or magnesium<\/strong>, and products with <strong>iron, bismuth, or zinc<\/strong>:<br>Do <strong>not<\/strong> take at the <strong>same time<\/strong> as DOXYCYCLINE BIOTECH 100 because they can reduce absorption.<\/li>\n\n\n\n<li><strong>Warfarin and other anticoagulants:<\/strong><br>Doxycycline may affect blood-thinning control; monitoring may be required.<\/li>\n\n\n\n<li><strong>Epilepsy medicines<\/strong> such as <strong>phenobarbital, carbamazepine, primidone, and phenytoin:<\/strong><br>These may alter doxycycline metabolism and reduce its effect.<\/li>\n\n\n\n<li><strong>Penicillins:<\/strong><br>Penicillins should <strong>not<\/strong> be used with doxycycline as they may block doxycycline\u2019s action.<\/li>\n\n\n\n<li><strong>Oral contraceptives (\u201cthe Pill\u201d):<\/strong><br>Doxycycline may reduce effectiveness. Use additional contraception while taking it and as advised by your healthcare provider.<\/li>\n\n\n\n<li><strong>Methoxyflurane (anaesthetic):<\/strong><br>Tell your doctor or dentist you are taking doxycycline if you are due for a procedure.<\/li>\n\n\n\n<li><strong>Alcohol:<\/strong><br>Alcohol may reduce doxycycline\u2019s effect by changing how quickly it is cleared from the body. Avoid alcohol during treatment.<\/li>\n\n\n\n<li><strong>Ciclosporin:<\/strong><br>Requires appropriate monitoring if used together.<\/li>\n\n\n\n<li><strong>Rifampicin (for tuberculosis):<\/strong><br>May reduce doxycycline\u2019s effect, leading to sub-therapeutic levels.<\/li>\n\n\n\n<li><strong>Isotretinoin or other systemic retinoids:<\/strong><br>Increases risk of raised pressure inside the skull; avoid using together unless specifically advised by your doctor.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Food, drink, and alcohol<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Take with a full glass of water.<\/li>\n\n\n\n<li>Take either <strong>one hour before<\/strong> meals or <strong>two hours after<\/strong> meals.<\/li>\n\n\n\n<li><strong>Do not drink alcohol<\/strong> while taking this medicine.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_take_Step-by-step\"><\/span>How to take (Step-by-step)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Follow your prescriber\u2019s instructions exactly. Do not share your antibiotic with anyone else.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Check your dose.<\/strong>\n<ul class=\"wp-block-list\">\n<li>Usual adult regimen: <strong>100 mg twice on the first day<\/strong>, then <strong>100 mg once daily<\/strong> thereafter.<\/li>\n\n\n\n<li>Your healthcare provider will decide how long you need treatment.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>When to take it.<\/strong>\n<ul class=\"wp-block-list\">\n<li>Take by mouth <strong>one hour before<\/strong> meals or <strong>two hours after<\/strong> meals.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>How to take it.<\/strong>\n<ul class=\"wp-block-list\">\n<li>Swallow the <strong>film-coated tablet whole<\/strong> with a <strong>full glass of water<\/strong>.<\/li>\n\n\n\n<li>Take the tablet <strong>sitting or standing<\/strong>.<\/li>\n\n\n\n<li><strong>Do not lie down<\/strong> for <strong>at least 30 minutes<\/strong> after each dose.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>While on treatment.<\/strong>\n<ul class=\"wp-block-list\">\n<li>Complete the <strong>full course<\/strong> even if you feel better earlier, unless your doctor tells you to stop.<\/li>\n\n\n\n<li>Avoid direct sunlight or UV exposure.<\/li>\n\n\n\n<li>Do not drink alcohol.<\/li>\n\n\n\n<li>Check for interactions before taking antacids, iron, zinc, bismuth, calcium, or magnesium products; if your prescriber advises continued use, ask about <strong>spacing<\/strong> these several hours away from doxycycline.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>If you think the medicine is too strong or too weak.<\/strong>\n<ul class=\"wp-block-list\">\n<li>Speak to your doctor or pharmacist; do not adjust the dose on your own.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Missed_dose\"><\/span>Missed dose<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Do not<\/strong> take a <strong>double dose<\/strong> to make up for a forgotten tablet.<\/li>\n\n\n\n<li>Take the next dose at the usual time and continue as directed.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Overdose\"><\/span>Overdose<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If you (or someone else) take <strong>more<\/strong> than prescribed, contact your <strong>doctor<\/strong>, <strong>pharmacist<\/strong>, the <strong>nearest hospital<\/strong>, or a <strong>poison centre<\/strong> immediately.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Stopping_treatment_early\"><\/span>Stopping treatment early<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Do <strong>not<\/strong> stop early unless your doctor instructs you to. Stopping too soon can allow the infection to come back or worsen.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dosing_table\"><\/span>Dosing table <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Age group<\/th><th>Dose on Day 1<\/th><th>Ongoing daily dose<\/th><th>How to take<\/th><th>Notes<\/th><\/tr><\/thead><tbody><tr><td><strong>Adults and adolescents (\u226512 years)<\/strong><\/td><td>100 mg <strong>twice daily<\/strong><\/td><td>100 mg <strong>once daily<\/strong><\/td><td>By mouth with a <strong>full glass of water<\/strong>, <strong>upright<\/strong>, <strong>1 hour before<\/strong> or <strong>2 hours after<\/strong> meals<\/td><td>Doctor decides duration. Do <strong>not<\/strong> lie down for <strong>\u226530 minutes<\/strong> after taking.<\/td><\/tr><tr><td><strong>Children &lt;12 years<\/strong><\/td><td><strong>Do not use<\/strong><\/td><td>\u2014<\/td><td>\u2014<\/td><td>Risk of permanent tooth discolouration.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Maximum daily dose and weight-based paediatric doses are <strong>not specified<\/strong> in the source.<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Possible_side_effects\"><\/span>Possible side effects<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DOXYCYCLINE BIOTECH 100 can cause <a href=\"https:\/\/rxquora.com\/en\/relislim-uses-side-effects-precautions-and-more\/\" data-type=\"link\" data-id=\"https:\/\/rxquora.com\/en\/relislim-uses-side-effects-precautions-and-more\/\">side effects<\/a>, although not everyone gets them. If your general health worsens while taking it, contact your healthcare provider.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Serious%E2%80%94seek_urgent_help\"><\/span>Serious\u2014seek urgent help<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Stop the medicine and get medical help immediately<\/strong> if you have any of the following:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Swelling of the hands, feet, ankles, face, lips, mouth, or throat; <a href=\"https:\/\/rxquora.com\/en\/donapan-tablet\/\" data-type=\"link\" data-id=\"https:\/\/rxquora.com\/en\/donapan-tablet\/\">difficulty swallowing<\/a> or breathing<\/li>\n\n\n\n<li>Rash or itching with signs of allergy<\/li>\n\n\n\n<li>Fainting<\/li>\n\n\n\n<li>Yellowing of the skin or eyes (jaundice)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Contact your doctor urgently or go to casualty<\/strong> if you notice:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Severe, persistent, or bloody diarrhoea (may occur during treatment or up to 2\u20133 months after the last dose), possibly with stomach pain or fever\u2014this can be a sign of serious bowel inflammation<\/li>\n\n\n\n<li>Skin becomes <strong>very sensitive to light<\/strong> (rash, itching, redness, or severe sunburn after sunlight or sunbed exposure)<\/li>\n\n\n\n<li>Low blood pressure<\/li>\n\n\n\n<li>Inflammation around the heart (pericarditis) or fast heart rate<\/li>\n\n\n\n<li>Worsening of systemic lupus erythematosus (SLE)<\/li>\n\n\n\n<li>Serum sickness<\/li>\n\n\n\n<li>Shortness of breath (dyspnoea) or blood vessel inflammation<\/li>\n\n\n\n<li>Fever, swollen lymph nodes, or skin rash\u2014possible <strong>DRESS<\/strong> (Drug Reaction with Eosinophilia and Systemic Symptoms), which can be severe and life-threatening<\/li>\n\n\n\n<li>Severe skin reactions such as <strong>erythema multiforme<\/strong>, <strong>Stevens-Johnson syndrome<\/strong>, or <strong>toxic epidermal necrolysis<\/strong> (widespread rash with blisters, peeling, and systemic symptoms)<\/li>\n\n\n\n<li><strong>Jarisch\u2013Herxheimer reaction<\/strong> (fever, chills, headache, muscle pain, skin rash) shortly after starting treatment for certain infections (usually self-limiting; inform your doctor)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Important:<\/strong> Using <strong>expired<\/strong> doxycycline may lead to a <strong>Fanconi-type syndrome<\/strong> (symptoms can include excessive urination and thirst, nausea, vomiting, and specific laboratory abnormalities). Check expiry dates and return unused medicine to your pharmacist.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common\"><\/span>Common <span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Headache<\/li>\n\n\n\n<li>Nausea or vomiting<\/li>\n\n\n\n<li>Eating disorder (as described in the source)<\/li>\n\n\n\n<li>Reddish-purple spots on lower legs, sore\/swollen joints, tummy pain or blood in urine<\/li>\n\n\n\n<li>Hives<\/li>\n\n\n\n<li>Swelling of the legs or arms<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Less_common\"><\/span>Less common <span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vaginal infection or vaginitis; thrush of the mouth or vagina<\/li>\n\n\n\n<li>Blood disorders (changes in blood cell counts)\u2014symptoms may include tiredness, easy bruising, or infections<\/li>\n\n\n\n<li>Discolouration of thyroid tissue (does not affect thyroid function)<\/li>\n\n\n\n<li>Porphyria with urine discolouration<\/li>\n\n\n\n<li>Loss of appetite<\/li>\n\n\n\n<li>Increased pressure in the skull (severe headaches, blurred\/double vision, blind spots); permanent vision loss has been reported<\/li>\n\n\n\n<li>Bulging fontanelle in infants<\/li>\n\n\n\n<li>Anxiety<\/li>\n\n\n\n<li>Tinnitus (ringing in the ears)<\/li>\n\n\n\n<li>Flushing<\/li>\n\n\n\n<li>Heartburn<\/li>\n\n\n\n<li>Pancreatitis (severe upper abdominal pain)<\/li>\n\n\n\n<li>Difficulty swallowing, stomach pain, diarrhoea<\/li>\n\n\n\n<li>Inflammation\/ulcers of the gullet (sore mouth, indigestion)<\/li>\n\n\n\n<li>Oral thrush (redness, soreness)<\/li>\n\n\n\n<li>Inflammation of the tongue<\/li>\n\n\n\n<li>Soreness\/itching of the rectal or genital area; inflammation around the vagina<\/li>\n\n\n\n<li>Liver inflammation or damage; abnormal liver tests<\/li>\n\n\n\n<li>Redness and peeling of the skin (dermatitis exfoliative)<\/li>\n\n\n\n<li>Nail detachment<\/li>\n\n\n\n<li>Joint or muscle aches<\/li>\n\n\n\n<li>Increased urea in the blood<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequency_unknown\"><\/span>Frequency unknown <span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vitamin deficiencies may occur<\/li>\n\n\n\n<li>Discolouration of teeth<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What to do if you get side effects<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mild effects: keep taking the medicine but inform your doctor or pharmacist.<\/li>\n\n\n\n<li>Severe effects or allergic symptoms: <strong>stop<\/strong> the medicine and seek urgent help.<\/li>\n\n\n\n<li>You can report side effects to <strong>SAHPRA<\/strong> using the <strong>Med Safety app (Medsafety X SAHPRA)<\/strong> or the <strong>eReporting platform<\/strong> listed on the SAHPRA website.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Storage_and_disposal\"><\/span>Storage and disposal<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Store <strong>at or below 25 \u00b0C<\/strong> in a <strong>well-closed container<\/strong>.<\/li>\n\n\n\n<li>Protect from <strong>light<\/strong>.<\/li>\n\n\n\n<li>Keep <strong>out of sight and reach of children<\/strong>.<\/li>\n\n\n\n<li><strong>Do not<\/strong> use after the <strong>expiry date<\/strong> on the label or carton.<\/li>\n\n\n\n<li>Return <strong>unused<\/strong> or <strong>expired<\/strong> tablets to your pharmacist.<\/li>\n\n\n\n<li>Do <strong>not<\/strong> dispose of tablets in drains or toilets.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_the_medicine_contains\"><\/span>What the medicine contains<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Active substance:<\/strong> Doxycycline (100 mg per tablet).<\/li>\n\n\n\n<li><strong>Other ingredients (excipients):<\/strong> Colloidal silicon dioxide, croscarmellose sodium, microcrystalline cellulose.<\/li>\n\n\n\n<li><strong>Tablet coating (TC\/530027 Orange):<\/strong> Carnauba wax, hypromellose, polyethylene glycol\/macrogol, <strong>sunset yellow FCF aluminium lake<\/strong>, and titanium dioxide.<\/li>\n\n\n\n<li><strong>Sugar status:<\/strong> <strong>Sugar-free<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pack_information_and_appearance\"><\/span>Pack information and appearance<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tablet appearance:<\/strong> Round, light orange, film-coated, biconvex tablets, engraved \u201cDox\u201d over \u201c100\u201d on one side; the other side is plain.<\/li>\n\n\n\n<li><strong>Blister packs:<\/strong> Alu\/PVC strips of 14 tablets (1 strip) or 28 tablets (2 strips), in an outer carton or patient-ready pack.<\/li>\n\n\n\n<li><strong>Plastic bottles:<\/strong> White, opaque HDPE bottles of 100 or 250 tablets.<\/li>\n\n\n\n<li><strong>Note:<\/strong> Not all pack sizes and strengths may be marketed at the same time.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Can I take DOXYCYCLINE BIOTECH 100 if I\u2019m pregnant or breastfeeding?<\/strong><br>No. Do not take this medicine if you are pregnant or breastfeeding. Speak to your healthcare provider for alternatives.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Can children use this medicine?<\/strong><br>No. It should not be used in children under 12 years because of the risk of permanent tooth discolouration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How should I take the tablet to protect my gullet (oesophagus)?<\/strong><br>Swallow the tablet whole with a full glass of water, while sitting or standing. Do not lie down for at least 30 minutes after taking it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>When should I take it in relation to meals?<\/strong><br>Take it one hour before meals or two hours after meals.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Can I drink alcohol while taking doxycycline?<\/strong><br>No. The source advises you should not drink alcohol while on treatment, as it may reduce the medicine\u2019s effect.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Does it interact with antacids or mineral supplements?<\/strong><br>Yes. Products containing aluminium, calcium, magnesium, iron, bismuth, or zinc can reduce absorption. Do not take them at the same time as doxycycline.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Will doxycycline affect my oral contraceptive (\u201cthe Pill\u201d)?<\/strong><br>Yes, it may reduce effectiveness. Use additional contraceptive precautions as advised by your healthcare provider.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What if I develop bad diarrhoea during or after treatment?<\/strong><br>Contact your doctor immediately\u2014especially if diarrhoea is severe, prolonged, or bloody, or occurs with stomach pain or fever. This can indicate bowel inflammation after antibiotic use.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Is it safe to be out in the sun?<\/strong><br>Use caution. Doxycycline can increase sun sensitivity. Avoid direct sunlight and sunbeds, and seek advice if you develop a rash or severe sunburn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What infections is this medicine used for?<\/strong><br>As prescribed for respiratory infections (such as sinusitis and chronic bronchitis), urinary tract infections, sexually transmitted diseases, eye infections, rickettsial infections (Q fever, tick fever), lice- or tick-borne fevers, malaria, cholera, brucellosis, leptospirosis, rabbit fever, yaws, and certain long-term soft-tissue infections, as listed in the source.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DOXYCYCLINE BIOTECH 100 is a prescription, sugar-free, film-coated tablet that contains 100 mg of doxycycline, a broad-spectrum antibiotic in the tetracycline family. Doctors use it to treat many different bacterial infections affecting the chest, urinary tract, eyes, and certain infections spread by ticks, lice, or animals. It is also used for some less common infections &#8230; <a title=\"DOXYCYCLINE BIOTECH:Uses,Side Effects,Warnings,Precautions\" class=\"read-more\" href=\"https:\/\/rxquora.com\/en\/doxycycline-biotech-uses-side-effects\/\" aria-label=\"Read more about DOXYCYCLINE BIOTECH:Uses,Side Effects,Warnings,Precautions\">Read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":2197,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-2140","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medicines"],"_links":{"self":[{"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/posts\/2140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/comments?post=2140"}],"version-history":[{"count":0,"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/posts\/2140\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/media\/2197"}],"wp:attachment":[{"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/media?parent=2140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/categories?post=2140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rxquora.com\/en\/wp-json\/wp\/v2\/tags?post=2140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}