Recommended Hep A GamaSTAN Dose Increased

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FDA says it is recommending an increase in dosing of Grifols Therapeutics’ GamaSTAN S/D (immune globulin [human]) when used for hepatitis A (HAV) prophylaxis. An agency notice says the dosage increase is based on recently observed decreasing concentrations of antibodies to hepatitis A in GamaSTAN S/D attributed to the decreasing prevalence of previous hepatitis A infection among plasma donors. “This change in the dosage recommendations for HAV prophylaxis is a precautionary measure, to ensure continued effectiveness of GamaSTAN S/D,” the notice says.

The recommended increase for household and institutional hepatitis A contacts is from a prior dose of 0.02 mL/kg to the new dose of 0.1 mL/kg. The notice also contains a chart with dosing recommendations for various lengths of stay as part of travel in areas where hepatitis A is common.

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