WHAT IS Dilantin/Phenytoin?
Dilantin/PHENYTOIN is used to control seizures in certain types of epilepsy. This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
THE USE OF Dilantin/Phenytoin MAY INCREASE THE CHANCE OF SUICIDAL THOUGHTS OR ACTIONS. PAY SPECIAL ATTENTION TO HOW YOU ARE RESPONDING WHILE ON Dilantin/Phenytoin. ANY WORSENING OF MOOD, OR THOUGHTS OF SUICIDE OR DYING SHOULD BE REPORTED TO YOUR HEALTH CARE PROFESSIONAL RIGHT AWAY. WHERE SHOULD I KEEP Dilantin/Phenytoin?
Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Do not freeze. Protect from light. Throw away any unused medicine after the expiration date.Keep out of the reach of children.
WHAT SIDE EFFECTS MAY I NOTICE FROM Dilantin/Phenytoin?
Side effects that you should report to your doctor or health care professional as soon as possible:
- unusual bleeding or bruising, pinpoint red spots on skin
- yellowing of the eyes or skin
- poor control of body movements or difficulty walking
- redness, blistering, peeling or loosening of the skin, including inside the mouth
- chest pain or tightness
- dark yellow or brown urine
- allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
- worsening of mood, thoughts or actions of suicide or dying
- breathing problems
- vomiting
- loss of seizure control
- fast or irregular heartbeat
- confusion
- changes in vision
- headache
- fever, sore throat
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
- nausea
- difficulty sleeping
- constipation
- excessive hair growth on the face or body
This list may not describe all possible side effects.
WHAT IF I MISS A DOSE?
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
WHAT SHOULD I TELL MY HEALTH CARE PROVIDERS BEFORE I TAKE Dilantin/Phenytoin?
They need to know if you have any of these conditions:
- diabetes
- suicidal thoughts, plans, or attempt; a previous suicide attempt by you or a family member
- breast-feeding
- heart problems
- porphyria
- receiving radiation therapy
- liver disease
- pregnant or trying to get pregnant
- blood disorders or disease
- thyroid disease
- an unusual or allergic reaction to Dilantin/phenytoin, other medicines, foods, dyes, or preservatives
- an alcohol abuse problem
- kidney disease
WHAT SHOULD I WATCH FOR WHILE USING Dilantin/Phenytoin?
Visit your doctor or health care professional for regular checks on your progress. This medicine needs careful monitoring. Your doctor or health care professional may schedule regular blood tests.
Wear a medical ID bracelet or chain, and carry a card that describes your disease and details of your medicine and dosage times.
Do not change brands or dosage forms of this medicine without discussing the change with your doctor or health care professional.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
Birth control pills may not work properly while you are taking this medicine. Talk to your doctor about using an extra method of birth control.
This medicine can cause unusual growth of gum tissues. Visit your dentist regularly. Problems can arise if you need dental work, and in the day to day care of your teeth. Try to avoid damage to your teeth and gums when you brush or floss your teeth.
Do not take antacids at the same time as this medicine. If you get an upset stomach and want to take an antacid or medicine for diarrhea, make sure there is an interval of 2 to 3 hours before or after you took your Dilantin/phenytoin.
WHAT MAY INTERACT WITH Dilantin/Phenytoin?
Do not take this medicine with any of the following:
- delavirdine
This medicine may also interact with the following:
- Chloromycetin/chloramphenicol
- corticosteroid hormones such as Meticorten/prednisone or cortisone
- aspirin and aspirin-like medicines
- Carbatrol/carbamazepine
- Ticlid/ticlopidine
- reserpine
- halothane
- methsuximide
- female hormones, including contraceptive or birth control pills
- T-phyl tr/theophylline
- tolbutamide
- medicines for mental depression, anxiety or other mood problems
- sulfonamides like Azulfidine or Bactrim
- medicines to control heart rhythm
- molindone
- isoniazid
- Phoslo/calcium supplements
- Lasix/furosemide
- phenylbutazone
- Antabuse/disulfiram
- Coumadin/warfarin
- Doryx/doxycycline
- methylphenidate
- alcohol
- barbiturate medicines for inducing sleep or treating seizures
- rifampin, rifabutin or rifapentine
- valproic acid
- ethosuximide
- chlordiazepoxide
- sucralfate
- diazepam
- cimetidine or other medicines for heartburn or stomach ulcers
- vitamin D
- enteral feedings (liquid nutritional drinks or tube feeding liquids)
This list may not describe all possible interactions. Give your health care providers a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
HOW SHOULD I USE Dilantin/Phenytoin?
Take this medicine by mouth. Follow the directions on the prescription label. Shake the bottle well before each dose. Use a specially marked spoon or dropper to measure your medicine. Ask your pharmacist if you do not have one. Household spoons are not accurate. Take this medicine with food if it upsets your stomach. Take your doses at regular intervals. Do not take your medicine more often than directed. Do not stop taking this medicine suddenly. This increases the risk of seizures. Your doctor will tell you how much medicine to take. If your doctor wants you to stop the medicine, the dose will be slowly lowered over time to avoid any side effects. Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
Note: This medicine is only for you. Do not share this medicine with others.
What is the shelf life of the pills?
- The expiry date is mentioned on each blister. It is different for different batches. The shelf life is 2 years from the date of manufacture and would differ from batch to batch depending on when they were manufactured.



