{"ok":true,"entry":{"slug":"aspirin","kind":"medication","name":"aspirin","aliases":["acetylsalicylic acid","Cardiprin","Disprin","Bokey"],"brands_sg":["Cardiprin","Bokey","Bayer Aspirin","Glyprin","Three Legs Brand"],"class":"NSAID / antiplatelet","tags":["heart-bp","pain-fever"],"use_for":"low dose makes blood less sticky; 500 mg eases pain","use_after":"label: 500 mg every 4–8 h · low dose is once a day","use_duration":null,"take_with":"sg label: preferably after meals, with plenty of liquid","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"],"dose_note":"sg bayer aspirin 500 mg label (sin05362p): 'Adults: Take 1–2 tablets every 4–8 hours, up to maximum of 6 tablets per 24 hours … Do not exceed the stated dose … Not recommended to be taken by patients < 16 years old, unless directed by a doctor' and 'Do not use continuously for more than 3 days without consulting a physician'; nhs low-dose aspirin: 'you usually take 1 tablet, once a day' — as directed on the label or by your doctor","dosage":null,"ul_status":null,"sg_class":"general-sale","cautions":["a history of stomach or duodenal ulcers, or gastro-intestinal bleeding — sg label: do not take unless advised by a doctor","below 16 years of age — sg label: unless advised by a doctor; reye's syndrome is the reason nhs and healthhub give","pregnant or breastfeeding — sg label: unless advised by a doctor, and not in the last trimester","asthma worsened by aspirin, g6pd deficiency, prone to gout, or surgery coming up (dental included) — sg label: check with a doctor first"],"clashes":[{"src":["nhs_aspirin_pain","nhs_aspirin_who","healthhub_aspirin"],"note":"nhs lists other nsaids among medicines that do not mix well with aspirin, and flags allergy across the nsaid class","with":"other nsaids (ibuprofen, naproxen)"},{"src":["nhs_aspirin_pain"],"note":"nhs lists anticoagulants among medicines that do not mix well with aspirin","with":"anticoagulants and other blood thinners"},{"src":["nhs_aspirin_pain"],"note":"nhs lists methotrexate among medicines that do not mix well with aspirin","with":"methotrexate"},{"src":["nhs_aspirin_pain"],"note":"nhs lists these among medicines that do not mix well with aspirin","with":"steroid medicines and some antidepressants"}],"sources":[{"id":"hsa_register","url":"https://data.gov.sg/datasets/d_767279312753558cbf19d48344577084/view","label":"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","quote":"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.","accessed":"2026-08-27"},{"id":"ndf_bayer_aspirin","url":"https://www.ndf.gov.sg/about-drugs/product-information/sin05362p/","label":"MOH National Drug Formulary (Singapore) — BAYER ASPIRIN TABLET 500 mg [SIN05362P], acetylsalicylic acid, Bayer (South East Asia) Pte Ltd — classification, indication and dosage","quote":"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","accessed":"2026-08-27"},{"id":"ndf_bayer_ci1","url":"https://www.ndf.gov.sg/about-drugs/product-information/sin05362p/","label":"MOH National Drug Formulary (Singapore) — BAYER ASPIRIN TABLET 500 mg [SIN05362P], 'DO NOT take this medicine if you' list (part 1)","quote":"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","accessed":"2026-08-27"},{"id":"ndf_bayer_ci2","url":"https://www.ndf.gov.sg/about-drugs/product-information/sin05362p/","label":"MOH National Drug Formulary (Singapore) — BAYER ASPIRIN TABLET 500 mg [SIN05362P], 'DO NOT take this medicine if you' list (part 2) and duration limit","quote":"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","accessed":"2026-08-27"},{"id":"healthhub_aspirin","url":"https://www.healthhub.sg/medication-devices-and-treatment/medications/aspirin","label":"HealthHub (MOH Singapore) — Aspirin, article last reviewed 30 June 2026","quote":"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","accessed":"2026-08-27"},{"id":"nhs_aspirin_pain","url":"https://www.nhs.uk/medicines/aspirin-for-pain-relief/","label":"NHS medicines A–Z — Aspirin for pain relief (side effects and medicines that do not mix well)","quote":"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","accessed":"2026-08-27"},{"id":"nhs_aspirin_who","url":"https://www.nhs.uk/medicines/aspirin-for-pain-relief/","label":"NHS medicines A–Z — Aspirin for pain relief (who it is not suitable for; availability)","quote":"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","accessed":"2026-08-27"},{"id":"nhs_aspirin_low_how","url":"https://www.nhs.uk/medicines/low-dose-aspirin/how-and-when-to-take-low-dose-aspirin/","label":"NHS medicines A–Z — How and when to take low-dose aspirin","quote":"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","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:10.48466+08:00"},"disclaimer":"kozen-x is not a medical device and does not give medical advice. it lists what published sources have written down. absence of a record is not the same as safe."}