| meperidine | <chemical> 1-methyl-4-phenyl-4-piperidinecarboxylic acid ethyl ester. A narcotic analgesic that can be used for the relief of most types of moderate to severe pain, including postoperative pain and the pain of labour. Prolonged use may lead to dependence of the morphine type; withdrawal symptoms appear more rapidly than with morphine and are of shorter duration. Pharmacological action: analgesics, opioid, anaesthesia adjuvants, narcotics. Chemical name: 4-Piperidinecarboxylic acid, 1-methyl-4-phenyl-, ethyl ester (12 Dec 1998) |
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| meperidine hydrochloride | Ethyl 1-methyl-4-phenylisonipecotate hydrochloride;a widely used narcotic analgesic. Synonym: pethidine. (05 Mar 2000) |
| promethazine | <chemical> A phenothiazine derivative with histamine h1-blocking, antimuscarinic, and sedative properties. It is used as an antiallergic, in pruritus, for motion sickness and sedation, and also in animals. Pharmacological action: anti-allergic agents, antiemetics, antipruritics, histamine h1 antagonists, sedatives, nonbarbiturate. Chemical name: 10H-Phenothiazine-10-ethanamine, N,N,alpha-trimethyl- (12 Dec 1998) |
| promethazine hydrochloride | 10-(2-Dimethylaminopropyl)phenothiazine hydrochloride;an antihistaminic with antiemetic properties. (05 Mar 2000) |
| promethazine theoclate | Promethiazine salt of 8-chlorotheophylline; an antihistaminic drug used for motion sickness. (05 Mar 2000) |