Depakene

Depakene

valproic acid

Manufacturer:

Abbott

Distributor:

Abbott
Concise Prescribing Info
Contents
Valproic acid
Indications/Uses
Sole & adjunctive therapy in the treatment of simple & complex absence seizures & adjunctively in multiple seizure types including absence seizures in adults & childn ≥10 yr.
Dosage/Direction for Use
Adult & childn ≥10 yr Complex partial seizure Initially 10-15 mg/kg/day, increased by 5-10 mg/kg/wk. Conversion to monotherapy, adjunctive therapy Initially 10-15 mg/kg/day, increased by 5-10 mg/kg/wk. Simple & complex absence seizure Initially 15 mg/kg/day, increasing at 1-wk interval by 5-10 mg/kg/day. Max: 60 mg/kg/day. Give in divided doses if the total daily dose exceeds 250 mg.
Administration
May be taken with or without food: May be taken w/ meals if GI discomfort occurs.
Contraindications
Hypersensitivity. Not to be administered to patients w/ hepatic disease or significant hepatic dysfunction. Mitochondrial disorders caused by mutations in mitochondrial DNA polymerase γ (POLG; eg, Alpers-Huttenlocher syndrome) & childn <2 yr suspected of having POLG-related disorder; systemic primary carnitine deficiency w/ uncorrected hypocarnitinemia; urea cycle disorders (UCD); porphyria. Treatment of epilepsy or mania & prophylaxis of migraine attacks in pregnancy & women of childbearing potential.
Special Precautions
Multi-organ hypersensitivity reactions. Not to be used for prophylaxis of post-traumatic seizures in patients w/ acute head trauma. Hepatotoxicity. Suicidal behavior & ideation. Discontinue if pancreatitis occurs; ammonia is increased; suspected or apparent signs of brain atrophy are present. Patients w/ hereditary neurometabolic syndromes caused by mutations in the gene for mitochondrial DNA polymerase γ (POLG) (eg, Alpers-Huttenlocher syndrome). Thrombocytopenia. Evaluate for UCD in patients w/ history of unexplained encephalopathy or coma, encephalopathy associated w/ protein load, pregnancy & postpartum, unexplained mental retardation, history of elevated plasma ammonia or glutamine; cyclical vomiting & lethargy, episodic extreme irritability, ataxia, low BUN, protein avoidance; family history of UCD or unexplained infant deaths (particularly males); other signs or symptoms of UCD. Patients w/ inborn errors of metabolism or reduced hepatic mitochondrial activity may be at increased risk for hyperammonemia w/ or w/o encephalopathy. Increased risk for symptomatic hypocarnitinemia in patients w/ metabolic disorders including mitochondrial disorders related to carnitine. Can seriously harm an unborn baby. Hypothermia. Risk of rhabdomyolysis in patients w/ underlying carnitine palmitoyltransferase type II deficiency. Aggravated convulsions. Patients w/ DM. Not to be taken by patients w/ fructose intolerance, glucose-galactose malabsorption or sucrase-isomaltase insufficiency. May be harmful to the teeth. Perform LFTs prior to therapy & at frequent intervals thereafter especially during the 1st 6 mth. Monitor platelet count & coagulation parameters prior to surgery, before initiating therapy & at periodic intervals. Not to be abruptly discontinued in prevention of major seizures. Not recommended in concomitant use w/ carbapenems. Concomitant use w/ pivalate-conjugated medicines or other antiepileptics; topiramate. False interpretation of urine ketone test. Altered thyroid function test. May affect ability to drive or operate machinery. Hepatic dysfunction. Women of childbearing potential must use effective contraception w/o interruption during entire treatment. May impair fertility in men. Pregnancy & lactation. Childn <2 yr; female childn experiencing menarche. Elderly >65 yr.
Adverse Reactions
Somnolence, tremor; nausea; asthenia. Thrombocytopenia; decreased/increased wt; amnesia, ataxia, dizziness, dysgeusia, headache, nystagmus, paresthesia, speech disorder; tinnitus; abdominal pain, constipation, diarrhea, dyspepsia, flatulence, vomiting; alopecia, ecchymosis, pruritus, rash; decreased/increased appetite; gait disturbance, peripheral edema; abnormal dreams, affect lability, confusional state, depression, insomnia, nervousness, abnormal thinking; amblyopia, diplopia; infection; injury.
Drug Interactions
Clearance may be increased w/ ritonavir, phenytoin, carbamazepine, phenobarb, primidone; estrogen-containing hormonal contraceptives. Decrease in protein-binding & in inhibition of metabolism w/ aspirin. Significant reduction in serum conc w/ carbapenem antibiotics (eg, ertapenem, imipenem, meropenem). Plasma level may be decreased w/ cholestyramine. Increased mean peak conc w/ felbamate. Serum levels may be decreased w/ metamizole. Decreased serum levels w/ MTX. Increased oral clearance w/ rifampin. Decreased plasma level w/ PIs (eg, lopinavir, ritonavir). Increased trough plasma levels w/ chlorpromazine. Decreased plasma clearance of amitriptyline; lorazepam. Decreased net clearance of nortriptyline. Decreased serum levels of carbamazepine & increased serum levels of carbamazepine-10,11-epoxide (CBZ-E). May induce absence type seizures w/ clonazepam. Reduced plasma clearance & vol of distribution for free diazepam. Inhibited metabolism of ethosuximide; phenobarb/primidone. Increased elimination t½ of lamotrigine. Inhibited hepatic metabolism of phenytoin. May trigger hypocarnitinemia w/ pivalate-conjugated medicines that decrease carnitine levels (eg, cefditoren pivoxil, adefovir dipivoxil, pivmecillinam & pivampicillin). Increased blood level of propofol. May increase plasma conc of nimodipine. Increased unbound fraction of tolbutamide; warfarin. Increased ALT >3 times ULN w/ cannabidiol. Encephalopathy &/or hyperammonemia w/ topiramate & acetazolamide. Decreased clearance of zidovudine. May increase risk of neutropenia/leucopenia w/ quetiapine. May decrease plasma conc of olanzapine. May increase plasma level of rufinamide.
MIMS Class
Anticonvulsants
ATC Classification
N03AG01 - valproic acid ; Belongs to the class of fatty acid derivatives antiepileptic.
Presentation/Packing
Form
Depakene syr 250 mg/5 mL
Packing/Price
120 mL x 1's (P877.75/bottle)
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