When presented concomitantly with promethazine, the dose of barbiturates must be reduced by a minimum of one-50 %, and also the dose of narcotics should be lessened by a person-quarter to at least one-half. Dosage have to be individualized. Abnormal amounts of promethazine HCl relative to some narcotic may bring https://wockusa.com/product/adderall-10mg/