Adverse Reaction:
GI disturbances, including anorexia, and weight loss. Drowsiness, headache, insomnia,dizziness, paresthesias. Abnormal urinary findings(including a rise in serum creatinine ). Psychic changes, skin rash, hepatitis.
Dosages/ Overdosage Etc:
Indications: Severe epilepsy
Dosage:
Phenacemide may produce serious toxic effects,, therfore keep the dosage at the minimum amount necessary to acheive therapeutic effects.
Adults- Starting dose- 1.5g/day administered in 3 divided doses of 500mg each. After the first week if seizures are not controlled and the drug is well tolerated, an additional 500mg may be taken upon arising. In the third week, if necessary, the dose may be further increased by 500mg at bedtime.
Children (5 to 10 years)- give approx 1/2 the adult dose at the same intervals as for adults
Patient Information:
1. Notify physician, if jaundice, abdominal pain, pale stools, darkened urine, fever,
sore throat, mouth sores, unusual bleeding or bruising, loss of appetite or skin rash.
2. May produce drowsiness or dizziness; patients should observe caution while driving or
performing other tasks requiring alertness, coordination or physical dexterity.
Ref - USP PDI Vol II 17th Edition (1997)
PHENACEMIDE - Systemic
1.Allergies-
Tell your doctor if you have ever had any unusual or allergic reaction to
phenacemide or any other anticonvulsant medicines in the past.. Also tell
your healthcare care professional if you are allergic to any other substances
such as foods. preservatives or dyes.
2.Pregnancy-
Phenacemide has been reported to cause birth defects when taken by the
mother during pregnancy. However this medicine may be necessary to
control seizures during pregnancy. Be sure your have discussed this
with your doctor.
3. Breast-feeding-
It is known not whether this medicine passes into breast milk.
4.Children-
Although there is no specific information comparing use of phenacemide
in children with use in other age groups, this medicine is not expected
to cause different side effects or problems than it does in adults.
5.Older adults-
Although there is no specific information comparing use of phenacemide
in the elderly with use in other age groups, this medicine is not expected
to cause different side effects in older people than those produced in
younger adults.
6. Other medicines-
Tell your doctor if you are using any of the following -
Other anticonvulsants- use of phenacemide may increase the chance of
side effects
7. Other medical problems-
Make sure you tell your doctor if you have any other medical problems
especially-
Blood disease or
Kidney diseaase or
Liver disease or
Personality disorder - (mental illness) - phenacemide may make the
condition worse
Pharmacology/ Pharmacokinetics:
ANTICONVULSANTS INCLUDES - BARBITURATES - OXAZOLIDINEDIONES- MISCELLANEOUS- Phenobarbitone Paramethadione Lamotrigine Trimethadione Primidone HYDANTOINS- Valproic acid Phenytoin BENZODIAPINES- Cabamazepine Mephenytoin Clonazepam Phenacemide Ethotoin Clorazepate Felbamate Diazepam Gabapentin SUCCINIMIDES- Ethosuximide Methsuximide Phensuximide REFER PHENYTOIN SODIUM -
Pharmacology: In animals, phenacemide in doses well below those causing neurological signs elevates the threshold for minimal elctroshock convulsions and abolishes the tonic phase of maximal electroshock seizures.
Pharmacokinetics: Phenacemide is well absorbed from the intestine and is degraded by the liver.