DRUG INTERACTIONS Codeine in combination with other narcotic analgesics, general anesthetics, phenothiazines, tranquilizers, sedative-hypnotics, or other CNS depressants including alcohol has additive depressant effects. Alcohol increases the respiratory depressant effects of opioids and tends to worsen the euphoric effects. It wasn prescribed by the doctor, but pretty sure it going to make me feel lots better. Overall exposure of meprobamate is comparable between female and male subjects. The structural formula of carisoprodol is: Aspirin: Chemically, aspirin acetylsalicyclic acid is 2- codeine sem rx acetyloxy -, benzoic acid and its molecular formula is C9H8O4, with molecular weight of 180. Precautions All opiate opioid agonists may impair the mental and or physical abilities required for the performance of potentially hazardous tasks such as driving motor vehicle or operating machinery. Have never noticed any euphoria below 100mg, so don give up just because two 3s don give you high.