Common Questions about Phenytoin

What is a normal phenytoin level?

Phenytoin levels between 10 and 20 mcg/mL (micrograms per milliliter) are considered therapeutic range serum levels for adults and children.

Can pregnant patients take phenytoin?

Phenytoin can increase the risk of serious birth defects in an unborn baby. Therefore, due consideration to an alternative anticonvulsant medication arises. Also, during pregnancy, decreased serum concentrations of phenytoin are noted, so your doctor will need to adjust the dose to maintain seizure control during pregnancy.

How long does it take for phenytoin to start working?

It takes 7-10 days for serum phenytoin concentrations to reach optimum therapeutic levels. Your doctor may increase your dose after 7-10 days if needed. It can take up to 4 weeks to get the full benefit of this medicine.

Does phenytoin make you gain weight?

Weight gain is not a common side effect of phenytoin. If you think you are gaining weight on this medicine, tell your doctor, and they may recommend lifestyle changes or switch you to another medication.

Can you drink alcohol while on phenytoin?

It is not advisable to drink alcohol while on phenytoin. Acute alcohol intake can increase serum phenytoin levels and put you at risk of phenytoin toxicity. Chronic alcohol use can decrease serum concentrations of phenytoin and lead to an increase in seizures.

What is the price of phenytoin without insurance?

Without insurance, phenytoin can be as high as $23.79, but with a free BuzzRx prescription discount coupon, you could pay as low as $16.37 for the most common version of this medication. Use the BuzzRx drug price look-up tool to find the lowest discounted price, and be sure to enter the correct dosage, form, and quantity for the most accurate pricing. While generics tend to have the best savings, you can also use your BuzzRx card and coupons to purchase brand-name versions. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescription drugs—whether you have insurance or not.

What is the price of phenytoin with insurance?

Ask your pharmacist or insurance provider for your copay price on phenytoin—Copay amounts vary depending on the type of insurance plan you have and if there is a deductible to reach before prescription drug coverage begins.

You could save up to 80% on your prescription medication with a free BuzzRx discount coupon for phenytoin. When using the BuzzRx lookup tool to find the price of your medicine, be sure to enter the correct dosage, form, and quantity to receive the most accurate discounted pricing. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescriptions—whether you have insurance or not.