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Levomethorphan is the l-stereoisomer of methorphan. The effects of the two isomers are quite different. Dextromethorphan is an antitussive on low doses and a dissociative on much higher doses, whereas levomethorphan is an opioid analgesic. Levomethorphan has effects similar to levorphanol but is less potent.
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Analgesics (N02A, N02B) |
| Opioids |
Bezitramide, Buprenorphine, Butorphanol, Dextromoramide, Dextropropoxyphene, Diamorphine, Dihydrocodeine, Fentanyl, Hydromorphone, Ketobemidone, Methadone, Morphine, Nalbufine, Nicomorphine, Opium, Oxycodone, Papaveretum, Pethidine, Piritramide, Tramadol (see also longer list) |
| Salicylic acid and derivatives |
Aspirin (Acetylsalicylic Acid), Diflunisal, Ethenzamide -- See also: NSAIDs |
| Pyrazolones |
Aminophenazone, Metamizole, Phenazone |
| Anilides |
Paracetamol (acetaminophen), Phenacetin |
| Others |
Ziconotide, Tetrahydrocannabinol, Ibuprofen, Ketoprofen, Mefenamic Acid, Naproxen, Diclofenac, Flurbiprofen, Diflunisal, Fenoprofen, Indomethacin, Ketorolac, Meclofenamate, Meloxicam, Piroxicam, Tolmetin |
