promethazine seems to be for allergies, red puffy eyes, etc.
If you're using codeine, dont bother with promethazine, because it effects the metabolisation of codeine into morphine. It just makes you feel more fucked because you're drowzy, it doesnt actually make the codeine high stronger.
If you're using codeine, dont bother with promethazine, because it effects the metabolisation of codeine into morphine. It just makes you feel more fucked because you're drowzy, it doesnt actually make the codeine high stronger.