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Desloratadine

Medication non-sedating antihistamine allergy
Aka: Aerius
Brands seen in Singapore: Aerius, Alrinast, Airistar, Desloratadine Sandoz, Destavell
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
SG label: allergic rhinitis symptoms and hives
When to take
SG label: once a day, regardless of mealtimes
Take with
HealthHub: with or without food · water
Pros & cons
Pros
  • HealthHub: less likely to cause drowsiness
  • SG label: covers hives as well as rhinitis
  • HSA: the 5 mg tablet is a pharmacy-only medicine
Cons
  • HealthHub: can still affect alertness and driving
  • SG label: not recommended for long-term use
  • HealthHub: headache, stomach upset, dry mouth
Sources
  1. HSA — Listing of Registered Therapeutic Products (data.gov.sg dataset d_767279312753558cbf19d48344577084), Forensicclassification column; all 5,511 rows cached at /tmp/hsa_all.json and filtered locally (never re-fetched), 8 desloratadine rows, 27 Aug 2026 · read 2026-08-27
    what it says
    “AERIUS TABLET 5 mg SIN11743P · ALRINAST SIN16170P · AIRISTAR SIN15938P · DESLORATADINE SANDOZ SIN15773P · DESTAVELL SIN16298P · GLENDES SIN16670P all read "Pharmacy Only"; AERIUS ORAL SOLUTION SIN12530P and Aerius D-12 SIN13772P read "Prescription Only"”
  2. MOH National Drug Formulary — collection of product information, AERIUS TABLET 5 MG [SIN11743P], Indication (SG package insert, last updated 28 July 2026) · read 2026-08-27
    what it says
    “AERIUS Tablets are indicated for the rapid relief of symptoms associated with allergic rhinitis … sneezing, nasal discharge and itching, congestion/stuffiness … also indicated for the relief of symptoms associated with urticaria”
  3. MOH National Drug Formulary — AERIUS TABLET 5 MG [SIN11743P], Dosing · read 2026-08-27
    what it says
    “One AERIUS 5 mg film-coated tablet once a day, regardless of mealtimes, and as and when necessary … Desloratadine is not recommended for long-term use.”
  4. MOH National Drug Formulary — AERIUS TABLET 5 MG [SIN11743P], Product information block · read 2026-08-27
    what it says
    “Forensic Classification: PHARMACY ONLY MEDICINES · Anatomical Therapeutic Chemical (ATC) code R06AX27 · Prescription-only Medicines with Exemptions for Supply without Prescription: NA”
  5. MOH National Drug Formulary — AERIUS TABLET 5 MG [SIN11743P], Contraindications · read 2026-08-27
    what it says
    “Hypersensitivity to the desloratadine, loratadine or to any of the excipients.”
  6. HealthHub (National Medication Information workgroup / Pharmaceutical Society of Singapore) — Desloratadine: how should I take or use this medication (reviewed 5 June 2026) · read 2026-08-27
    what it says
    “Take the medication when necessary to relieve your symptoms · Do not exceed the maximum dose as recommended by your healthcare professional · You may take this medication with or without food”
  7. HealthHub — Desloratadine: what precautions should I take · read 2026-08-27
    what it says
    “You are pregnant, planning to become pregnant, or breastfeeding … You have: Seizures; Liver or kidney problems; Heart or abnormal heart rhythm problems”
  8. HealthHub — Desloratadine: common side effects · read 2026-08-27
    what it says
    “Affect alertness (dizziness, drowsiness) … Note: Desloratadine is a newer antihistamine that is less likely to cause drowsiness. Headache. Stomach upset. Dry mouth, skin and eyes”
  9. HealthHub — Desloratadine: what food or medication should I avoid · read 2026-08-27
    what it says
    “Taking this medication with alcohol may worsen the drowsy side effect … Many over-the-counter medications contain antihistamines, always check with your health care professional before taking two over-the-counter medications at the same time”
  10. NHS — Antihistamines (reviewed on the NHS conditions A–Z) · read 2026-08-27
    what it says
    “non-drowsy antihistamines that are less likely to make you feel sleepy … There's not much evidence to suggest any particular antihistamine is better than any other at relieving allergy symptoms.”
  11. NHS — Antihistamines: taking antihistamines with other medicines, food or alcohol · read 2026-08-27
    what it says
    “Examples of medicines that could cause problems if taken with antihistamines include some types of: antidepressants; stomach ulcer or indigestion medicines; cough and cold remedies that also contain an antihistamine”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.