Phenytoin Oral
In Depth
- Uses and How to Use
- Dosage and Storage
- Precautions and Side Effects
- Drug Interactions
- Drug Images
Pronounced: (fen-eh-TOE-in, FEN-eh-toyn)
Phenytoin Oral Uses
Phenytoin is used to prevent and control seizures (also called an anticonvulsant or antiepileptic drug). It works by reducing the spread of seizure activity in the brain.
How To Use Phenytoin Oral
The tablets may be chewed thoroughly before swallowing or swallowed whole.
Take this medication by mouth usually 2 or 3 times a day, or as directed by your doctor. This product is not recommended for use once a day. You may take it with food if stomach upset occurs. Take this medication with a full glass (8 ounces or 240 milliliters) of water unless your doctor directs you otherwise. Do not lie down for at least 30 minutes after taking this drug.
Use this medication regularly in order to get the most benefit from it. It is important to take all doses on time to keep the amount of medicine in your body at a constant level. Remember to use it at the same times each day. Dosage is based on your medical condition and response to therapy.
Antacids or nutritional tube-feeding (enteral) products which contain calcium may decrease the absorption of phenytoin. If you are using any such products, separate taking them from phenytoin by at least 2 hours.
Do not stop taking this medication without consulting your doctor. Seizures may become worse when the drug is suddenly stopped. Your dose may need to be gradually decreased.
Inform your doctor if your condition does not improve or worsens.
