When supplied concomitantly with promethazine, the dose of barbiturates should be decreased by no less than one-50 %, and the dose of narcotics should be decreased by 1-quarter to one-50 percent. Dosage have to be individualized. Extreme quantities of promethazine HCl relative to the narcotic may result in restlessness and https://wockusa.com/product/caluanie-muelear-oxidize/