Thiazinamium is an anti-cholinergic phenothiazine deriva¬tive, which also has antihistaminic properties. Intramuscular injection of Thiazinamium induces considerable bronchodilatation, but inconsistent results have been obtained after oral administration. The bioavailability of oral Thiazinamium is only 2-3% of that occurring after intramuscular injection. Intrarectal Thiazinamium is slightly better absorbed (3-9%). The elimination half-life of the parenteral drug is short, being about 20 minutes in most patients. Thiazinamium has been available for the treatment of asthma since the early 1960s but currently withdrawn in most countries. Compared with inhaled ipratropium bromide, intramuscular Thiazinamium and intramuscular atropine were associated with 'extremely frequent side-effects’. Notable tachycardia occurred shortly after intramuscular injection of Thiazinamium in two trials. Dry mouth was reported as ‘frequent’ with oral Thiazinamium, and micturition problems of moderate severity affected 13% of patients.

Dequalinium is a quaternary ammonium cation commonly available as the dichloride salt. Dequalinium chloride has an antiseptic effect against a wide range of bacteria, yeasts, and some fungi and viruses. It kills the micro-organisms associated with various mild infections of the mouth and throat. Also, Dequalinium chloride is active against the bacteria which cause bacterial vaginosis. Dequalinium Chloride (DECA) is a PKC inhibitor and high-affinity blocker CNGA1 channel, and nearly as effective on heteromeric CNGA1+CNGB1 channels. Common side effects are: vaginal discharge; vaginal itching or vaginal burning; vaginal yeast infection (thrush); tender tongue.

Rimiterol is erythro-(3,4-dihydroxyphenyl)-2-piperidyl-methanol hydrobromide, and is a catecholamine. It is a selective β2-adrenoreceptor agonist, but is not effective as a bronchodilator by the oral route of administration. Rimiterol is available at present as an aerosol, though preliminary studies suggest that it may be of value in the intravenous therapy of severe asthma.

Mebeverine is an antispasmodic with a direct action on the smooth muscle of the gastrointestinal tract. The exact mechanism of action is not known, but multiple mechanisms, such as a decrease in ion channel permeabilities, blockade of noradrenaline reuptake, a local anesthetic effects, as well as weak anti-muscarinic and phosphodiesterase inhibitory effect might contribute to the local effects of Mebeverine. This medicine is used to treat symptoms of irritable bowel syndrome (IBS) and similar problems such as chronic irritable colon, spastic constipation, mucous colitis and spastic colitis. Most people will not have problems with Mebeverine, but some may get some side effects, such as: difficulty in breathing, swelling of face, neck, tongue or throat, skin rash, red itchy skin.

Alrestatin, an inhibitor of aldose reductase, was studied in clinical trials for the treatment of diabetes. But this study was discontinued, because of the high hepatotoxicity events.

Lorajmine is a monochloracetyl derivative of ajmaline. It is a class Ia antiarrhythmic agent that is rapidly hydrolyzed to ajmaline by plasma and tissue esterases. Lorajmine was used in the clinic to control arrhythmias. It was found that in a significant proportion of cases administration of lorajmine lead to worsening of arrhythmias.

Flumedroxone is a progestative agent. It is a pregnane derivative substituted at C-6 by a trifluoromethyl group. It was tested whether flumedroxone had prophylactic value in migraine. No benefit was found in males, or in females with no history of menstrual exacerbation of migraine. In women whose migraine was worse around the time of menstruation flumedroxone resulted in statistically fewer headaches of less severity. With the dose used in this trial side-effects were frequent, the commonest being polymenorrhagia, which occurred in half the women of reproductive age.

Ciramadol is an opioid agonist-antagonist analgesic with low potential for dependency. Ciramadol appears to be an effective analgesic, with tolerable gastrointestinal central nervous system side effects at both the 30-and 90-mg dose levels. Ciramadol is a mixed agonist-antagonist for the μ-opioid receptor. Side effects might include nausea and vomiting.

Amadione is a steroidal progestogenic antiandrogen. Its anti-androgenic properties were confirmed by blockade of androgen-induced increase in seminal acid phosphatase content.

Oxilofrine is a sympathomimetic used to treat hypotensive states, with cardiac stimulatory effects similar to those of ephedrine. It has never been approved for use in the USA as a prescription drug or as a dietary supplement. Oxilofrine has been found (1) to act predominantly as a beta1 agonist increasing the speed and force of heart muscle contraction (inotropic effects), specifically, increasing left ventricular ejection fraction and stroke volume; (2) to increase blood pressure; (3) to have variable effects on heart rate; and (4) to potentially increase oxygen uptake by the lungs.