Medicine guide

Topiramate

150 mg · Capsule, Extended Release

  • Prescription only
Active substance
Topiramate
Made by
Zydus Lifesciences Limited

Quoted from the official source. Not yet reviewed by Mediclarum — the leaflet in your pack is authoritative.

What it is for

This information is not included in the verified source. Open the official leaflet

How it works

From the US prescribing label for the same active substance (Topiramate). It describes the substance, not this exact product.

The precise mechanisms by which topiramate exerts its anticonvulsant and preventive migraine effects are unknown; however, preclinical studies have revealed four properties that may contribute to topiramate's efficacy for epilepsy and the preventive treatment of migraine.

Electrophysiological and biochemical evidence suggests that topiramate, at pharmacologically relevant concentrations, blocks voltage-dependent sodium channels, augments the activity of the neurotransmitter gamma-aminobutyrate at some subtypes of the GABA-A receptor, antagonizes the AMPA/kainate subtype of the glutamate receptor, and inhibits the carbonic anhydrase enzyme, particularly isozymes II and IV.

Peak level after2 h
Half-life21 h
Mostly cleared after≈ 4 daysfive half-lives — our arithmetic
PeakHalf gone4 days0
The shape is a standard model drawn from the two times above, not a measurement. How fast a medicine acts and wears off also depends on the dose, the form and the person.
How the body breaks it down

Metabolism and Excretion Topiramate is not extensively metabolized and is primarily eliminated unchanged in the urine (approximately 70% of an administered dose).

With food

The bioavailability of topiramate is not affected by food.

Quoted from the prescribing label, sections “Mechanism of Action” and “Pharmacokinetics”. DailyMed · 2026-09-04

Safety of the active substance

From the US prescribing label for the same active substance (Topiramate). It describes the substance, not this exact product.

Must not be used by
  • Topiramate is contraindicated in patients with a history of hypersensitivity reaction to topiramate, Topiramate tablets, or any of the inactive ingredients of Topiramate tablet.
  • Anaphylaxis and angioedema have occurred [see Warnings and Precautions (5.13)].
  • History of hypersensitivity reaction to topiramate, topiramate tablets, or any of the inactive ingredients of topiramate tablet.
Most common side effects

The most common adverse reactions in the controlled clinical trial (Study 1) that occurred in adults in the 400 mg/day topiramate tablets group and at an incidence higher (≥10 %) than in the 50 mg/day group were: paresthesia, weight loss and anorexia (see Table 5).

Quoted from the US prescribing label for the same active substance. Your own pack’s leaflet is the authority for your product. DailyMed

Same active substance, strength and form in other countries

Matched on active substance, strength and kind of form only. This is not a statement that the products are equivalent or interchangeable: other ingredients, release and approved uses can differ — ask a pharmacist before swapping.

Medicine passport: one printable page to show a pharmacist abroad

FranceNo exact match for this strength and form

CanadaNo exact match for this strength and form

Details

Made byZydus Lifesciences Limited
Active substanceTopiramate
Strength150 mg
FormCapsule, Extended Release
RouteOral
Packs30 CAPSULE, EXTENDED RELEASE in 1 BOTTLE · 90 CAPSULE, EXTENDED RELEASE in 1 BOTTLE
NDC70771-1659

Source: NDC Directory · 2026-09-13 · not reviewed by a clinician

Source: US Food and Drug Administration, NDC Directory. Reuse terms: US government work (FDA).

Other strengths and forms

211 products are sold under this name. Grouped by form; a number on a strength means several companies make it.

Show all forms · 6 forms

Same active substance

These contain the same substance. That does not mean one can replace another — ask a pharmacist.