Source: Health Products and Food Branch (CA) Revision Year: 2018
PANHEMATIN (hemin for injection) is indicated for the amelioration of recurrent attacks of acute intermittent porphyria temporally related to the menstrual cycle in susceptible women, after initial carbohydrate therapy is known or suspected to be inadequate.
Pediatrics (<16 years of age): Based on the data submitted and reviewed by Health Canada, the safety and efficacy of PANHEMATIN in pediatric patients has not been established; therefore, Health Canada has not authorized an indication for pediatric use.
Geriatrics (>65 years of age): Evidence from clinical data in the geriatric population is not sufficient to determine whether they respond differently from younger subjects.
ALA-δ-aminolevulinic acid
PBG-porphobilinogen
Uroporphyrin
Coproporphyrin
The dose of PANHEMATIN is 0.8 to 3.1 mg/kg/day of hematin for 3 to 14 days based on the clinical signs. The standard dose in clinical practice is 2.3 to 3.1 mg/kg/day. In more severe cases this dose may be repeated no earlier than every 12 hours. Do not exceed 4.6 mg/kg of hematin in any 24 hour period. After reconstitution each mL of PANHEMATIN contains the equivalent of approximately 5.4 mg of hematin (see dosage calculation table below).
Dosage Calculation Table |
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1 mg hematin equivalent = 0.18 mL PANHEMATIN |
2 mg hematin equivalent = 0.37 mL PANHEMATIN |
3 mg hematin equivalent = 0.55 mL PANHEMATIN |
4 mg hematin equivalent = 0.74 mL PANHEMATIN |
Health Canada has not authorized an indication for pediatric use.
Parenteral Products: Reconstitute PANHEMATIN by aseptically adding 48 mL of Sterile Water for Injection, USP, to the dispensing vial. Shake the vial well for a period of 2 to 3 minutes to aid dissolution.
Table 1. Reconstitution:
Vial Size | Volume of Diluent to be Added to Vial | Approximate Available Volume | Nominal Concentration Hematin per mL |
---|---|---|---|
268 mg | 48 mL | 48 mL | 5.4 mg/mL |
Reversible renal shutdown has been observed in a case where an excessive hematin dose (12.2 mg/kg) was administered in a single infusion (see Warnings and Precautions). Treatment of this case consisted of ethacrynic acid and mannitol.
For management of a suspected drug overdose, contact your regional poison control centre.
Store lyophilized powder at 20-25°C (68-77°F).
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