{"ok":true,"entry":{"slug":"magnesium-hydroxide","kind":"medication","name":"magnesium hydroxide","aliases":["milk of magnesia"],"brands_sg":["Hydrosil","Macgel","Axcel Eviline","Actal Plus"],"class":"antacid / osmotic laxative","tags":["digestive"],"use_for":"heartburn and indigestion · constipation at laxative doses","use_after":"after meals or when symptoms arise (sg antacid label)","use_duration":null,"take_with":"water · a full glass with each laxative dose (us label)","pros":["laxative doses act in ½ to 6 hours (us label)","general sale list in singapore — no prescription","sg antacid strengths are small: 200 mg or 400 mg/5 ml"],"cons":["kidney disease — us label says ask a doctor first","magnesium-restricted diet — label says ask first","binds other medicines — labels ask for 2 h+ spacing"],"dose_note":"the us otc milk of magnesia label (purpose: \"Saline laxative\") sets the adult figure at \"adults and children 12 years and over 30 mL to 60 mL\", with \"do not exceed the maximum recommended daily dose in a 24 hour period\" and \"dose may be taken once a day preferably at bedtime, in divided doses, or as directed by a doctor\". singapore has no single-ingredient product on the hsa register: the five registered items are combination antacids at 200 mg per tablet or 400 mg/5 ml, and the axcel eviline forte insert (SIN06400P) says \"One 5ml spoonful to be taken after meals or whenever symptoms arise\" without stating a daily ceiling. as directed on the label or by your pharmacist/doctor.","dosage":null,"ul_status":null,"sg_class":"general-sale","cautions":["kidney disease — us otc label: ask a doctor before use","magnesium-restricted diet — label: ask a doctor first","a laxative needed for more than 1 week — label: ask a doctor","pregnant or breastfeeding — label: ask a health professional"],"clashes":[{"src":["hh_levo_avoid","ndf_cravit_dose"],"note":"sg leaflet lists antacids among things to take 2 h before or after; the cravit insert says two hours either side of magnesium/aluminium antacids","with":"levofloxacin and other fluoroquinolones"},{"src":["fda_moxi_int"],"note":"us label: moxifloxacin at least 4 hours before or 8 hours after antacids","with":"moxifloxacin"},{"src":["fda_cefu_int"],"note":"us label: at least 1 hour before or 2 hours after short-acting antacids","with":"cefuroxime axetil"},{"src":["fda_mgoh_warn"],"note":"us otc label: may interact with certain prescription drugs — pharmacist check first","with":"prescription medicines in general"}],"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; filtered locally for magnesium hydroxide)","quote":"Forensicclassification = 'General Sale List' for all 5 magnesium-hydroxide rows: SIN03484P HYDROSIL TABLET; SIN08119P MACGEL TABLET; SIN06592P AXCEL EVILINE TABLET; SIN06400P AXCEL EVILINE FORTE SUSPENSION; SIN07376P ACTAL PLUS TABLET","accessed":"2026-08-27"},{"id":"ndf_hydrosil_class","url":"https://www.ndf.gov.sg/about-drugs/product-information/sin03484p/","label":"MOH National Drug Formulary — HYDROSIL TABLET [SIN03484P], product information","quote":"ALUMINIUM HYDROXIDE (DRIED GEL) - 200 MG MAGNESIUM HYDROXIDE - 200 MG SIMETHICONE - 20 MG … Forensic Classification GENERAL SALE LIST","accessed":"2026-08-27"},{"id":"ndf_eviline_ind","url":"https://www.ndf.gov.sg/about-drugs/product-information/sin06400p/","label":"MOH National Drug Formulary — AXCEL EVILINE FORTE SUSPENSION [SIN06400P], indications","quote":"Eviline Forte is an antacid / deflatulent for symptomatic treatment of peptic ulcer, dyspepsia of functional or organic origin, heartburn in hiatus hernia or pregnancy, flatulence and abdominal distension","accessed":"2026-08-27"},{"id":"ndf_eviline_dose","url":"https://www.ndf.gov.sg/about-drugs/product-information/sin06400p/","label":"MOH National Drug Formulary — AXCEL EVILINE FORTE SUSPENSION [SIN06400P], dosage and administration","quote":"For oral administration only. One 5ml spoonful to be taken after meals or whenever symptoms arise.","accessed":"2026-08-27"},{"id":"fda_mgoh_uses","url":"https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=003a3c0d-7a48-e44d-e063-6394a90a3f4a","label":"FDA DailyMed — MILK OF MAGNESIA oral suspension (Strategic Sourcing Services LLC), OTC label eff. 2023-11-08","quote":"Purpose Saline laxative … Uses relieves occasional constipation (irregularity) generally produces bowel movement in 1/2 to 6 hours","accessed":"2026-08-27"},{"id":"fda_mgoh_dose","url":"https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=003a3c0d-7a48-e44d-e063-6394a90a3f4a","label":"FDA DailyMed — MILK OF MAGNESIA, Directions","quote":"do not exceed the maximum recommended daily dose in a 24 hour period … drink a full glass (8 oz) of liquid with each dose … adults and children 12 years and over 30 mL to 60 mL","accessed":"2026-08-27"},{"id":"fda_mgoh_warn","url":"https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=003a3c0d-7a48-e44d-e063-6394a90a3f4a","label":"FDA DailyMed — MILK OF MAGNESIA, Warnings","quote":"Ask a doctor before use if you have kidney disease a magnesium-restricted diet … Ask a doctor or pharmacist before use if you are presently taking a prescription drug … If pregnant or breast-feeding, ask a health professional","accessed":"2026-08-27"},{"id":"hh_levo_avoid","url":"https://www.healthhub.sg/medication-devices-and-treatment/medications/levofloxacin","label":"HealthHub (National Medication Information workgroup) — Levofloxacin: what food or medication should I avoid, reviewed 31 May 2024","quote":"Indigestion remedies (e.g. Antacids) … You should take the above products 2 hours before or after Levofloxacin as taking them together reduces the absorption of Levofloxacin into your body.","accessed":"2026-08-27"},{"id":"ndf_cravit_dose","url":"https://www.ndf.gov.sg/about-drugs/product-information/sin11632p/","label":"MOH National Drug Formulary — CRAVIT TABLET 500 MG [SIN11632P], dosage and administration","quote":"Oral doses should be administered at least two hours before or two hours after antacids containing magnesium, aluminum, as well as sucralfate, metal cations such as iron","accessed":"2026-08-27"},{"id":"fda_moxi_int","url":"https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=02c29e8e-8346-4e28-b7fc-2f4cb61ad37d","label":"FDA DailyMed — Moxifloxacin hydrochloride tablets (A-S Medication Solutions), Drug Interactions, eff. 2024-09-18","quote":"Multivalent cation-containing products including: antacids, sucralfate, multivitamins Decreased moxifloxacin hydrochloride absorption. Take moxifloxacin tablet at least 4 hours before or 8 hours after these products.","accessed":"2026-08-27"},{"id":"fda_cefu_int","url":"https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=119c4d09-2324-498f-9318-1f8db49ad4b6","label":"FDA DailyMed — Cefuroxime axetil tablets (A-S Medication Solutions), Drug Interactions, eff. 2025-10-08","quote":"Administer cefuroxime axetil at least 1 hour before or 2 hours after administration of short-acting antacids. Histamine-2 (H2) antagonists and proton pump inhibitors should be avoided.","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:24.715168+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."}