Butaclamol is an antipsychotic drug, which was studied for the treatment of schizophrenia. This drug has never marketed and now is used in research, because of its action as a dopamine receptor-blocking agent. Butaclamol consists of the two forms: (-)-butaclamol, an inactive drug and (+)-butaclamol, a potent neuroleptic drug.

Butinoline (also known as azulone) was used as an antispasmodic drug to treat gastritis.

Verazide, which is related to Isoniazid has been developed in Australia for the treatment of pulmonary tuberculosis. It is equally effective as Isoniazid and less toxic.

Famprofazone, a nonsteroidal anti-inflammatory agent, is found in a multi-ingredient medication (Gewodin) used for pain relief. It is available over-the-counter in Taiwan. Famprofazone transforms to methamphetamine (MA) and amphetamine (AM) following administration, which is responsible for the side effects of the drug. For example, famprofazone user might be interpreted as an illicit MA abuser in Taiwan because the user's urine tested positive for MA.

Carmoxirole is a dopamine D2 receptor agonist with limited central activity that modulates sympathetic activation and subsequently reduces pre-load and afterload in animals. It was shown, that carmoxirole induced beneficial effects on hemodynamic and neurohumoral parameters in heart failure. In addition, experimental evidence showed that carmoxirole lowered blood pressure in various models of hypertension mainly or exclusively through inhibition of noradrenaline release from sympathetic nerve endings. That effect of carmoxirole was mediated by presynaptic dopamine receptors with the characteristic that release inhibition was restricted to low rates of sympathetic nerve discharge.

Sulfasuccinamide is a sulfonamide antibacterial with properties similar to those of sulfamethoxazole. It has been applied topically in the treatment of local infections of the ear, nose, and throat. It has also been given as the sodium salt. Sulfasuccinamide is a carbonic anhydrase inhibitor.

Metiamide is an antagonist of histamine H2-receptors synthesized at Smith Kline & French Laboratories. It potently inhibited gastric acid secretion. Metiamide demonstrated promising clinical effects in patients with duodenal ulcers but questionable safety.

Trithiozine is an alkoxythiobenzamide said to have antisecretory and tranquillising properties without anticholinergic, antihistaminic, or ganglion-blocking effects. Trithiozine in animal studies proved to have a marked anti-secretory and anti-ulcer effect, along with a very low acute and chronic toxicity. Clinical trials with trithiozine have been performed in some European countries. The results of these trials, most of which were conducted on a double-blind basis, and including already several hundreds of patients, have shown that oral trithiozine: exerts a very significant action on both basal and stimulated gastric acid secretion, without a rebound hypersecretion; promotes, in most patients, a complete endoscopic healing of peptic ulcer, in addition to an early symptomatic relief; has a mild sedative action; does not affect the pancreatic secretion; is well tolerated even for long-term (up to 10 months) treatments.

Nifenalol is the beta-receptor antagonist. It has optical isomers. The racemic mixture and the levo-isomer are active in antagonizing beta-receptors, but the dextro-isomer is inactive. The levo-isomer seems to be about twice as active in blocking beta-receptors as the racemate. Nifenalol is virtually devoid of local anesthetic properties in contrast to procaine, propranolol, and butidrine. Nifenalol exacerbated the fighting behavior in male mice by foot-shock. Nifenalol has been studied in patients with coronary artery disease. It afforded the coronary patient good protection against angina and ischemic changes in the EKG. It was further noted that nifenalol had no antiarrhythmic action and that it was devoid of evident side effects. Nifenalol possessed weak action against tremorine and oxotremorine induced tremor.

Furfenorex (unde brand name Frugalan), was used against obesity as an appetite suppressant. One of its metabolite was metamphetamine, which lead to the abuse to the drug. That is why this drug is no longer marketed