DESELEX® Syrup/Tablets:Uses, Dosage, Side Effects, Warnings

Fedorchenko Olga Valeryevna

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DESELEX® Syrup

If you or your child suffers from allergies, your doctor or pharmacist may recommend a medicine called DESELEX®. This medication helps manage symptoms like sneezing, runny nose, itchy eyes, and even hives. But DESELEX® comes in two forms: syrup and tablets. Which one is better for you or your child? This guide explains everything in clear, simple language to help you understand and compare both options.


What is DESELEX®?

DESELEX® is an anti-allergy medicine. Its active ingredient is desloratadine, which belongs to a group of medicines called antihistamines. These medicines help reduce allergy symptoms by blocking a natural substance in your body called histamine.

DESELEX® comes in two main forms:

  • DESELEX® Syrup: Contains 2.5 mg of desloratadine in every 5 ml of syrup.
  • DESELEX® Tablets: Each tablet contains 5 mg of desloratadine.

DESELEX® Syrup Ingredients:

  • Active Ingredient: Desloratadine (2.5 mg per 5 ml)
  • Sweeteners: Sorbitol (12%), Sucrose (40%)
  • Other Ingredients: Disodium edetate, citric acid, propylene glycol, sodium citrate, bubble gum flavour, dye (FD & C no. 6), purified water
  • Preservative: Sodium benzoate (0.1%)

DESELEX® Tablet Ingredients:

  • Active Ingredient: Desloratadine (5 mg per tablet)
  • Other Ingredients: Calcium phosphate, maize starch, microcrystalline cellulose, talc, purified water
  • Sugar: Lactose monohydrate

What Is It Used For?

Both DESELEX® syrup and tablets are used to treat:

  • Allergic rhinitis: This includes symptoms like sneezing, runny or itchy nose, and itchy or watery eyes. It can be seasonal (like hay fever) or year-round.
  • Chronic idiopathic urticaria: A condition that causes itching, redness, and hives (rash or bumps on the skin).

How to Take DESELEX®

Age GroupDESELEX® Syrup DosageDESELEX® Tablet Dosage
Children 2 to 5 years2.5 ml (1.25 mg) once dailyNot recommended
Children 6 to 11 years5 ml (2.5 mg) once dailyNot recommended
12 years and older10 ml (5 mg) once daily1 tablet (5 mg) once daily
  • Both forms can be taken with or without food.
  • Always follow your doctor’s instructions.

Duration of Use:

  • Allergic Rhinitis: Up to 4 weeks
  • Chronic Urticaria: Up to 6 weeks

Who Should Not Take DESELEX®?

Avoid DESELEX® if you:

  • Are allergic to desloratadine or any of the ingredients.
  • Are under 2 years old (for syrup).
  • Are under 12 years old (for tablets).
  • Have a rare condition that affects sugar digestion (for tablet users).

Speak to your doctor before using DESELEX® if you:

  • Have liver or kidney problems.
  • Have a history of seizures.
  • Are pregnant or breastfeeding.

Possible Side Effects

Body SystemPossible Side Effects (Syrup & Tablet)
Immune SystemAllergic reactions, swelling, rash
Nervous SystemDrowsiness, dizziness, headache, insomnia, seizures
HeartFast heartbeat, palpitations
Digestive SystemNausea, vomiting, stomach pain, dry mouth, diarrhea
LiverHepatitis, abnormal liver tests, increased bilirubin
MusclesMuscle pain
GeneralFatigue (feeling tired)
OthersIncreased appetite

Note: Not everyone will experience these side effects. Always consult a healthcare professional if you notice anything unusual.


Warnings and Precautions

  • Driving or using machinery: While desloratadine usually doesn’t cause drowsiness, some people may feel sleepy. If that happens, avoid driving or using machines.
  • Drug interactions: Tell your doctor about all medications you are taking, especially:
    • Antifungals like ketoconazole
    • Antibiotics like erythromycin and azithromycin
    • Antidepressants like fluoxetine
    • Acid-reducing meds like cimetidine

DESELEX® In Case of Pregnancy

DESELEX® is not recommended for use during pregnancy. Although animal studies haven’t shown harmful effects, there isn’t enough information about its safety in human pregnancies. Because of this, doctors advise avoiding it during pregnancy unless the benefits clearly outweigh the risks.

Important: Always talk to your doctor before taking any medicine while pregnant — even over-the-counter ones.


Why Should DESELEX® Be Avoided During Pregnancy?

  • There’s not enough research to say it’s completely safe.
  • DESELEX® contains desloratadine, which can cross into the bloodstream and might reach the baby.
  • Even though no harmful effects were seen in animal tests, humans might react differently.

What If You Accidentally Took DESELEX® While Pregnant?

Don’t panic. One accidental dose is unlikely to harm you or your baby. But you should still:

  • Tell your doctor or midwife.
  • Let them know how much you took and when.
  • Follow their advice for what to do next.

Can I Take DESELEX® While Trying to Get Pregnant?

It’s best to avoid it while trying to conceive, unless your doctor says it’s okay.


Are There Safer Alternatives for Pregnant Women With Allergies?

Yes, some allergy medicines are considered safer during pregnancy. Your doctor might recommend:


Safer Allergy Medicines for Pregnant Women in South Africa

Yes, some allergy treatments are considered safer during pregnancy, even in South Africa. While DESELEX® (desloratadine) is not recommended, doctors may suggest safer options that are widely available locally.

✅ Safer Alternatives Commonly Used in South Africa:

Medicine / TreatmentAvailability in South AfricaUse in Pregnancy
Loratadine (e.g., Loratyn, Clarityne)OTC or pharmacy medicineUsually considered safe in all trimesters
Cetirizine (e.g., Texa, Zyrtec)Available at pharmaciesOften used under medical supervision
Nasal saline sprays (e.g., Sterimar, Salex)Widely available at pharmacies and stores100% safe, no medication involved
Steam inhalationHome remedySafe and effective for congestion relief

🩺 Always consult your doctor or pharmacist before starting any new medication — even if it’s considered “safe” during pregnancy.


📝 Notes for South African Women:

  • Clarityne and Loratyn are trusted loratadine brands in SA.
  • Texa is a popular cetirizine brand that some doctors recommend during pregnancy.
  • Salex® is a common, drug-free nasal spray available at Dis-Chem, Clicks, and other major retailers.
  • Avoid self-medicating. Pregnant women should always be cautious with over-the-counter medicines.

DESELEX® and Breastfeeding

DESELEX® should also be avoided while breastfeeding. That’s because:

  • Desloratadine can pass into breast milk.
  • It’s not clear how it may affect your baby.
  • Doctors usually advise against using it unless absolutely necessary.

If you’re breastfeeding and need allergy relief, safer options might include:

  • Non-sedating antihistamines (like loratadine or cetirizine) in low doses
  • Natural remedies, such as saline sprays or steam therapy

Storage Instructions

  • Store below 30°C in the original container.
  • Do not refrigerate or keep in a bathroom.
  • Keep away from children.
  • Do not use after expiry date.
  • Return unused medicine to your pharmacy.

Special Notes on Ingredients

  • Syrup: Contains sucrose and sorbitol. People with sugar intolerance should consult a doctor before use.
  • Tablet: Contains lactose. Not suitable for people with lactose intolerance.

How Fast Does It Work?

  • Many users feel symptom relief within 1 to 2 hours of taking DESELEX®.
  • The effects last for a full 24 hours, making it convenient for once-a-day use.

Pharmacological Insights (Simple Explanation)

Desloratadine works by blocking histamine – the chemical in your body that causes allergy symptoms. Unlike older antihistamines, it does not usually make you sleepy.

Desloratadine starts working within 30 minutes, reaches its peak in about 3 hours, and stays active for around 27 hours. It binds to proteins in your blood and doesn’t build up too much over time.


Summary Comparison Table

DESELEX® Syrup vs DESELEX® Tablets
FeatureDESELEX® SyrupDESELEX® Tablets
FormLiquid syrupFilm-coated tablet
Active Ingredient2.5 mg per 5 ml5 mg per tablet
Sugar ContentContains sucrose and sorbitolContains lactose
Suitable for KidsYes, from 2 years oldOnly from 12 years old
Dosing2.5 ml – 10 ml daily (based on age)1 tablet daily (12+ years)
TasteBubble gum flavor, kid-friendlyNo flavor
Best ForChildren and people who struggle with pillsTeens and adults who prefer tablets
Common Side EffectsHeadache, dry mouth, fatigueHeadache, nausea, fatigue
Sedative EffectRareRare
Prescription Needed?May vary by countryMay vary by country

Final Thoughts

Both DESELEX® syrup and tablets are effective for treating allergy symptoms like hay fever and hives. The best choice depends on your age, medical history, and personal preference:

  • Choose DESELEX® syrup for young children or if you prefer a flavored liquid.
  • Choose DESELEX® tablets if you are 12 or older and prefer a quick, no-fuss tablet.

As always, talk to your doctor or pharmacist before starting any medication. They can help you choose the right form and dose for your specific needs.

Stay allergy-free and breathe easier with DESELEX®

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