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Aspirin

Medication NSAID / antiplatelet heart & blood pressurepain & fever
Aka: acetylsalicylic acid, Cardiprin, Disprin, Bokey
Brands seen in Singapore: Cardiprin, Bokey, Bayer Aspirin, Glyprin, Three Legs Brand
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
Low dose makes blood less sticky; 500 mg eases pain
When to take
Label: 500 mg every 4–8 h · low dose is once a day
Take with
SG label: preferably after meals, with plenty of liquid
Pros & cons
Pros
  • General sale list in SG at both 100 mg and 500 mg
  • NHS: one low-dose tablet, once a day
  • Dispersible and enteric-coated forms exist in SG
Cons
  • Indigestion, stomach ache, easier bleeding (NHS)
  • Under 16 — SG label and NHS flag reye's syndrome
  • G6pd deficiency is on the SG do-not-take list
Sources
  1. HSA — Listing of Registered Therapeutic Products (data.gov.sg dataset d_767279312753558cbf19d48344577084, Health Sciences Authority), Forensicclassification column; all 5,511 rows pulled via the datastore_search API on 27 Aug 2026 · read 2026-08-27
    what it says
    “BAYER ASPIRIN 500 mg SIN05362P | General Sale List; CARDIPRIN 100 SIN05313P | GSL; BOKEY 100 mg SIN08997P | GSL; GLYPRIN SIN12172P | GSL; THREE LEGS BRAND ASPIRIN SIN09770P | GSL — all single-ingredient aspirin rows GSL; no DISPRIN row.”
  2. MOH National Drug Formulary (Singapore) — BAYER ASPIRIN TABLET 500 mg [SIN05362P], acetylsalicylic acid, Bayer (South East Asia) Pte Ltd — classification, indication and dosage · read 2026-08-27
    what it says
    “ACETYLSALICYLIC ACID - 500 MG … GENERAL SALE LIST … Adults: Take 1–2 tablets every 4–8 hours, up to maximum of 6 tablets per 24 hours. Tablet should preferably be taken after meals, with plenty of liquid”
  3. MOH National Drug Formulary (Singapore) — BAYER ASPIRIN TABLET 500 mg [SIN05362P], 'DO NOT take this medicine if you' list (part 1) · read 2026-08-27
    what it says
    “DO NOT take this medicine if you: … Are pregnant or breastfeeding, unless advised by a doctor … Are below 16 years of age … Have or had a history of stomach or duodenal ulcers, or gastro-intestinal bleeding”
  4. MOH National Drug Formulary (Singapore) — BAYER ASPIRIN TABLET 500 mg [SIN05362P], 'DO NOT take this medicine if you' list (part 2) and duration limit · read 2026-08-27
    what it says
    “Have asthma … worsened by ASPIRIN, salicylates or NSAIDs … Have G6PD deficiency … Are prone to having gout … Are about to have any surgery … Do not use continuously for more than 3 days without consulting a physician”
  5. HealthHub (MOH Singapore) — Aspirin, article last reviewed 30 June 2026 · read 2026-08-27
    what it says
    “Aspirin … is used to prevent blood clots from forming by making the blood less 'sticky' … should be taken after food to reduce stomach irritation … Very rarely, Aspirin may cause Reye's syndrome … in young children”
  6. NHS medicines A–Z — Aspirin for pain relief (side effects and medicines that do not mix well) · read 2026-08-27
    what it says
    “Do not give aspirin to children aged 15 years or under … Reye's syndrome … indigestion and stomach aches … bleeding more easily than usual … anticoagulants, some steroid medicines, some antidepressants, methotrexate, other NSAIDs”
  7. NHS medicines A–Z — Aspirin for pain relief (who it is not suitable for; availability) · read 2026-08-27
    what it says
    “you've had an allergic reaction or serious side effect from aspirin, ibuprofen or another non-steroidal anti-inflammatory drug (NSAID) … a stomach ulcer … asthma … heart failure … a liver or kidney condition … problems with blood clotting”
  8. NHS medicines A–Z — How and when to take low-dose aspirin · read 2026-08-27
    what it says
    “you usually take 1 tablet, once a day … swallow tablets whole with a glass of water – if you're taking dispersible tablets, let the tablet dissolve in a glass of water before swallowing it”
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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.