S: (n) antagonist (a drug that neutralizes or counteracts the effects of another drug)
S: (n) antisyphilitic (a drug (or other chemical agent) that is effective against syphilis)
S: (n) anti-TNF compound (a class of drugs that block the action of tumor necrosis factor (TNF); used in cases of rheumatoid arthritis because TNF instigates inflammation of the joints)
S: (n) botanical (a drug made from part of a plant (as the bark or root or leaves))
S: (n) brand-name drug, proprietary drug (a drug that has a trade name and is protected by a patent (can be produced and sold only by the company holding the patent))
S: (n) drug of abuse, street drug (a drug that is taken for nonmedicinal reasons (usually for mind-altering effects); drug abuse can lead to physical and mental damage and (with some substances) dependence and addiction)
S: (n) Feosol (trade name of a drug rich in iron; used to treat some kinds of anemia)
S: (n) Fergon (trade name of a drug rich in iron; used to treat some types of anemia)
S: (n) generic drug (when the patent protection for a brand-name drug expires generic versions of the drug can be offered for sale if the FDA agrees) "generic drugs are usually cheaper than brand-name drugs"
S: (n) levallorphan, Lorfan (drug (trade name Lorfan) that is related to morphine but that counteracts the respiratory depression produced by morphine poisoning but without affecting its analgesic effects)
S: (n) medicine, medication, medicament, medicinal drug ((medicine) something that treats or prevents or alleviates the symptoms of disease)
S: (n) narcotic (a drug that produces numbness or stupor; often taken for pleasure or to reduce pain; extensive use can lead to addiction)
S: (n) pentoxifylline, Trental (a drug (trade name Trental) used to treat claudication; believed to increase the flexibility of red blood cells so they can flow through the blood vessels to the legs and feet)