{"ok":true,"entry":{"slug":"oseltamivir","kind":"medication","name":"oseltamivir","aliases":["Tamiflu"],"brands_sg":["Tamiflu","Fluvir","Natflu","Seltavir","Starflu-75"],"class":"neuraminidase-inhibitor antiviral","tags":["cold-flu"],"use_for":"prescribed for influenza type a and b — a doctor decides","use_after":"fda label: twice daily for 5 days when treating influenza","use_duration":null,"take_with":"water · healthhub: with or without food","pros":["healthhub: capsules may be opened if swallowing is hard","fda label: the adult treatment course is 5 days","healthhub: breastfeeding can be continued on it"],"cons":["healthhub: nausea, vomiting or diarrhoea are common","healthhub: rare confusion, delirium, hallucinations","healthhub: not a substitute for influenza vaccination"],"dose_note":"the us fda label for tamiflu gives, for treatment, 'Adults and adolescents (13 years and older): 75 mg twice daily for 5 days', and for prophylaxis '75 mg once daily for at least 10 days' with 'up to 6 weeks' in a community outbreak — 75 mg twice daily is the highest adult figure on that label, and it is reduced to 30 mg in moderate to severe renal impairment. sg-registered capsules are 30 mg, 45 mg and 75 mg. in singapore the prescriber sets the dose.","dosage":null,"ul_status":null,"sg_class":"prescription-only","cautions":["allergy to oseltamivir or its other ingredients (healthhub)","pregnancy or planning one — healthhub: limited studies","breastfeeding — healthhub sets out how to time a dose","reduced kidney function — the fda label lowers the dose"],"clashes":[{"src":["hh_osel_interactions"],"note":"healthhub: avoided within 2 weeks before or 48 hours after oseltamivir unless medically indicated","with":"live influenza vaccine"},{"src":["hh_osel_interactions"],"note":"healthhub lists probenecid as a medicine not to be used together with oseltamivir","with":"probenecid"}],"sources":[{"id":"hsa_register","url":"https://data.gov.sg/datasets/d_767279312753558cbf19d48344577084/view","label":"HSA — Listing of Registered Therapeutic Products (data.gov.sg open dataset, 5,511 rows, pulled in full via datastore_search and filtered locally)","quote":"All 11 registered oseltamivir products carry Forensicclassification 'Prescription Only' — SIN11403P TAMIFLU CAPSULE 75 mg · SIN16307P FLUVIR · SIN16241P NATFLU · SIN16667P SELTAVIR · SIN15685P STARFLU-75","accessed":"2026-08-27"},{"id":"hh_osel_uses","url":"https://www.healthhub.sg/medication-devices-and-treatment/medications/oseltamivir","label":"HealthHub (Pharmaceutical Society of Singapore / National Medication Information workgroup) — Oseltamivir: what is this medication for","quote":"Oseltamivir is used to prevent or treat infections caused by influenza viruses (Type A and B). It is an antiviral medication … Oseltamivir is not a substitute for influenza vaccination.","accessed":"2026-08-27"},{"id":"hh_osel_admin","url":"https://www.healthhub.sg/medication-devices-and-treatment/medications/oseltamivir","label":"HealthHub — Oseltamivir: how should I take or use this medication","quote":"You may take Oseltamivir with or without food. The capsules may be opened to provide the correct dosage when given for a child or for those who cannot swallow.","accessed":"2026-08-27"},{"id":"hh_osel_precautions","url":"https://www.healthhub.sg/medication-devices-and-treatment/medications/oseltamivir","label":"HealthHub — Oseltamivir: precautions, pregnancy and breastfeeding","quote":"Inform your healthcare professional if: You are allergic … You are pregnant … there are limited studies in pregnant women … Breastfeeding while taking Oseltamivir can be continued.","accessed":"2026-08-27"},{"id":"hh_osel_side","url":"https://www.healthhub.sg/medication-devices-and-treatment/medications/oseltamivir","label":"HealthHub — Oseltamivir: common side effects","quote":"You may experience nausea, vomiting or diarrhea … You may experience dizziness … You may experience headache.","accessed":"2026-08-27"},{"id":"hh_osel_rare","url":"https://www.healthhub.sg/medication-devices-and-treatment/medications/oseltamivir","label":"HealthHub — Oseltamivir: rare but serious side effects","quote":"Neuropsychiatric reactions such as: Confusion; Delirium; Hallucinations or unusual thoughts or behavior … Symptoms of a drug allergy … Swollen face/eyes/lips/tongue; Difficulty in breathing","accessed":"2026-08-27"},{"id":"hh_osel_interactions","url":"https://www.healthhub.sg/medication-devices-and-treatment/medications/oseltamivir","label":"HealthHub — Oseltamivir: what food or medication should I avoid","quote":"Live influenza vaccine should be avoided within 2 weeks before or 48 hours after administration of Oseltamivir unless medically indicated. Avoid using Oseltamivir together with Probenecid.","accessed":"2026-08-27"},{"id":"fda_tamiflu_dose","url":"https://api.fda.gov/drug/label.json?search=openfda.brand_name:%22TAMIFLU%22&limit=1","label":"US FDA label for TAMIFLU (oseltamivir phosphate), section 2 Dosage and Administration, via openFDA drug/label.json (effective 2025-12-15)","quote":"Adults and adolescents (13 years and older): 75 mg twice daily for 5 days … Prophylaxis … 75 mg once daily for at least 10 days … Community outbreak: 75 mg once daily for up to 6 weeks","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:27.496708+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."}