What is the 1 2 life of Topamax?
What is the 1 2 life of Topamax?
Half-Life Of Topamax (Topiramate) The half-life of any medication is the amount of time it takes for the medication to reduce to half of its effectiveness in the body. Topiramate has a half-life of approximately 21 hours, depending on personal factors of the patient.
How do you titrate topiramate?
Titration should begin at 25 mg/day (or less, based on a range of 1 to 3 mg/kg/day) nightly for the first week. The dosage should then be increased at 1-or 2-week intervals by increments of 1 to 3 mg/kg/day (administered in two divided doses), to achieve optimal clinical response.
How quickly is Topamax absorbed?
Topiramate is well absorbed from the gastrointestinal tract, peak plasma levels being usually attained in 2-3 hours.
How is Topamax metabolized?
Metabolism and Excretion Topiramate is not extensively metabolized and is primarily eliminated unchanged in the urine (approximately 70% of an administered dose). Six metabolites have been identified in humans, none of which constitutes more than 5% of an administered dose.
Can you lose weight on 25 mg of Topamax?
Topamax for weight loss Topamax isn’t approved for weight loss. However, the drug may reduce your appetite, which may lead you to lose weight. In clinical studies, weight loss occurred in 6% to 17% of people who took Topamax.
Will 25 mg of Topamax cause weight loss?
When should you not take Topamax?
Do not take Topamax if you:
- are allergic to it or any of the ingredients in it.
- consume alcohol within 6 hours of taking Topamax.
- have or have had any of these conditions: Glaucoma or other eye problems. Kidney disease. Metabolic acidosis.
- are planning to become pregnant or if you are breastfeeding.
Why did I gain weight on Topamax?
Topamax isn’t known to cause weight gain. This side effect wasn’t reported in clinical studies with Topamax. However, weight gain has been reported with some anticonvulsant drugs that are in the same class as Topamax. (A drug class is a group of medications that work in a similar way.)
Are there any government approved uses for Topamax?
When Topamax first hit the market, the FDA limited the drug for use in treating seizures from various forms of epilepsy. After about eight years, the agency added migraine prevention as an FDA-approved use. Seizures and migraines continue to be the only government-approved uses for Topamax in the U.S.
How many mg of Topamax should I take in a day?
The dose should be achieved by titration according to the following schedule (Table 1): Dosing in patients 2 to 9 years of age is based on weight. During the titration period, the initial dose of TOPAMAX ® is 25 mg/day nightly for the first week.
Which is the active ingredient in Topamax weight loss?
Topiramate, the active ingredient in Topamax, is also a main ingredient in the weight-loss drug Qsymia, along with phentermine. The FDA approved Qsymia in 2012.
When was Topamax first approved for seizure treatment?
Topamax is a type of prescription seizure medication known as an anticonvulsant. The U.S. Food & Drug Administration (FDA) first approved Topamax for treatment of epilepsy in 1996.