| Amphetamines | Amantadine, benzphetamine (Regimex), bupropion (Wellbutrin), chlorpromazine, clobenzorex (not available in the United States), desipramine, dextroamphetamine, ephedrine (Akovaz), fenproporex (not available in the United States), isometheptene (component of Prodrin), labetalol, levomethamphetamine (active ingredient in some over-the-counter nasal decongestant inhalers), methamphetamine, 3,4-methylene-dioxymethamphetamine (MDMA), methylphenidate (Ritalin), phentermine (Adipex-P), phenylephrine, promethazine, pseudoephedrine, ranitidine (Zantac), selegiline (Eldepryl), thioridazine, trazodone, trimethobenzamide (Tigan), trimipramine (Surmontil) |
| Benzodiazepines | Oxaprozin (Daypro), sertraline (Zoloft) |
| Cannabinoids | Dronabinol (Marinol), efavirenz (Sustiva), hemp-containing foods, proton pump inhibitors, tolmetin and other nonsteroidal anti-inflammatory drugs |
| Cocaine | Coca leaf tea, topical anesthetics containing cocaine |
| Opioids | Dextromethorphan, heroin, quinine, quinolones, rifampin, verapamil |
| Phencyclidine | Dextromethorphan, diphenhydramine (Benadryl), doxylamine, ibuprofen, ketamine (Ketalar), meperidine (Demerol), thioridazine, tramadol, venlafaxine |
