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Short answer How long Aluminum Hydroxide takes to work Common questions Related questions SourcesAluminum hydroxide usually starts working within 5 to 15 minutes, because it neutralizes acid already sitting in your stomach instead of slowing acid production.
How long that relief lasts depends mostly on timing: taken on an empty stomach it may fade in 30 to 60 minutes, while a dose taken after a meal can last up to about 3 hours. Liquid suspensions and fully chewed tablets spread across the stomach faster than a tablet you swallow whole. Aluminum hydroxide is also prescribed as a phosphate binder in kidney disease, and in that role it works over days to weeks rather than minutes. It can bind other medicines, so separating doses by about 2 hours keeps those drugs working. If you need an antacid most days for more than 2 weeks, the pattern itself is worth a medical review.
How long Aluminum Hydroxide takes to work
Common questions
How long does Aluminum Hydroxide take to work?
Aluminum hydroxide is a fast-acting antacid, so most people feel heartburn easing within about 5 to 15 minutes of a dose. Relief is short: roughly 30 to 60 minutes on an empty stomach, and up to about 3 hours when you take it after a meal, since food keeps the antacid in your stomach longer. Chew chewable tablets fully and shake liquid forms well, because both act faster than a tablet swallowed whole. If it is prescribed as a phosphate binder for kidney disease, blood phosphate levels change over days to weeks. Talk with a doctor if you still need it after 2 weeks.