project |
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Name/scientific name |
PHENYTOIN
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Self-financed or subsidized by the Hospital Authority |
Hospital Authority Drug Formulary
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Indications |
Epilepsy, partial seizures, generalized tonic-clonic seizures, prevention and treatment of post-surgical seizures, trigeminal neuralgia
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body system |
Central Nervous System
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type |
anti-epileptic drugs
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Phenytoin is an antiepileptic drug used to control partial and generalized seizures. It reduces the frequency and severity of epileptic seizures by affecting electrical signals in the brain, reducing the activity of neurons. Phenytoin should be used according to the doctor's prescription instructions, and should not exceed the recommended dose or stop using it to avoid adverse reactions. Possible side effects include drowsiness, dizziness, abnormal liver function, and rash. While taking phenytoin, patients should monitor blood levels to ensure the drug's safety and effectiveness. Pregnant women should use this medicine under the guidance of a doctor. Phenytoin may interact with other medications, so patients should inform their doctor about all medications they are taking. If you have any questions or discomfort, you should consult your doctor immediately.
Directions: Use this medication as directed by your physician or pharmacist. It is generally recommended to take it orally, with or without food, but it is best to keep food at arm's length before each dose. Avoid eating grapefruit or its juice as it may affect the effectiveness of the medicine. Avoid activities that require high alertness, such as driving a vehicle or operating machinery while taking this medicine.
Dosage Guidelines: The usual starting dose for adults is 300 mg daily, taken in divided doses. Depending on individual circumstances, your physician may adjust the dosage. For children, the starting dose is based on body weight, generally 5 mg/kg/day, taken in divided doses. The physician will adjust the dosage based on the patient's response and needs. Please do not change the dosage on your own. If you have any questions, please consult a medical professional.
PHENYTOIN is an anti-epileptic drug with side effects including dizziness, nausea, vomiting, abnormal liver function, rash, bone marrow suppression and allergic reactions. It may cause serious skin reactions such as erythema multiforme, toxic epidermal necrolysis, etc. Long-term use may cause tooth discoloration, osteoporosis and anemia. Sudden cessation of use should be avoided to avoid triggering seizures. If you feel any discomfort, you should consult your doctor immediately.
Drug name: PHENYTOIN
Taboo groups:
1. It is prohibited for those who are allergic to PHENYTOIN or other phenytoin drugs.
2. Pregnant women should avoid use, especially in early pregnancy, as it may cause serious effects on the fetus.
3. Pregnant women using PHENYTOIN during pregnancy or breastfeeding may increase the risk of congenital defects in newborns.
4. Patients with severe heart disease, abnormal liver function or blood diseases should avoid using PHENYTOIN.
5. Long-term use of PHENYTOIN may cause osteoporosis. Patients with osteoporosis should use it with caution or avoid use.
6. Patients with brain diseases, abnormal renal function or mental illness should use PHENYTOIN with caution and under the supervision of a physician.
7. PHENYTOIN may interact with other drugs. Patients should inform their physician of all drugs they are using to avoid adverse reactions.
The above are contraindications for PHENYTOIN. Please consult a physician before use and do not use the drug by yourself.
Precautions for use: Use this medication as directed by your doctor or pharmacist. Do not exceed recommended dosage and avoid stopping use suddenly. Blood tests should be performed periodically during use to monitor drug concentrations. If severe skin reactions, liver problems, or other adverse reactions occur, seek medical attention immediately. You should consult your doctor or pharmacist when interacting with other medications.
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Use of phenytoin during pregnancy may cause risks to the fetus. Higher use early in pregnancy may increase the risk of birth defects in the fetus. If you are pregnant or planning to become pregnant, you should seek advice from your doctor.
If you are taking phenytoin, you should make sure you are monitored and checked regularly by your doctor. Do not stop taking your medicine unless specifically directed by your doctor.
During pregnancy, avoiding phenytoin or seeking alternative medications is your best option. If you find out you are pregnant, you should notify your doctor immediately so they can adjust your medication regimen.
Remember, pregnancy is a very important time for you and your baby, and make sure you stay in close contact with your doctor to ensure the health of you and your baby.
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