Prisotinol is aminoalkyl-5-pyridinol patented by Ciba-Geigy A.-G. for treatment of angina pectoris. Prisotinol was studied in phase II clinical trials as a cardioprotective agent.

Nalmexone is an opioid partial agonist or mixed agonist-antagonist with both analgesic and narcotic antagonist properties. In preclinical models parenteral nalmexone was a moderately active antagonist and therefore might have low abuse potential. At the same time, early work in man indicated analgesic activity in doses above 20 mg.

Umespirone [KC 9172, KC 7218] is a serotonin 1A receptor agonist that was undergoing phase I clinical trials with Solvay in the Netherlands as a potential treatment for anxiety and psychotic disorders. Umespirone prevented the behavioural consequences of withdrawal from diazepam. Umespirone also had an anxiolytic profile of action in the tests of rat social interaction and in the marmoset exposed to a human threat. Umespirone reduced the hyperactivity induced by the infusion of dopamine into the nucleus accumbens of rat. In radioligand binding assays umespirone demonstrated nanomolar affinity for the alpha 1-adrenoceptor and the 5-HT1A and dopamine D2 receptors.

Fasitibant (MEN-16132) is a non-peptide sulfonamide-containing bradykinin hB2 receptor antagonist. It inhibits pro-inflammatory response in vitro and alleviates inflammatory hyperalgesia in rodent models of osteoarthritis. Menarini Group was developing fasitibant for the treatment of osteoarthritis. Fasitibant development has been discontinued.

Metesculetol (permethol) is a vitamin P derivative. It increases capillary resistance and reduces membrane permeability. Permethol is for damaged gums and helps to stop gum bleeding, relieves inflammation and nourishes the gum tissues. It is used as a component of products for oral cavity care.

Loprodiol is tranquillizer and muscle relaxant.

Fosmidomycin (3-(formylhydroxyamino)-propylphosphonic acid mono-sodium salt, 3-(N-formyl-N-hydroxyamino)-propylphosphonic acid mono-sodium salt, FR-31564) is a potent inhibitor of P. falciparum 1-deoxy-D-xylulose-5-phosphate reductoisomerase (PfDXR), developed by Albert Schweitzer Hospital for P. falciparum malaria treatment. Fosmidomycin was originally isolated as natural antibiotic from Streptomyces lavendulae. Fosmidomycin is active against a broad range of enterobacteria, but not against Gram-positive organisms or anaerobes. Fosmidomycin was developed as far as an early phase II study for the treatment of urinary tract infections by Fujisawa Pharmaceutical Company (Osaka, Japan) in the early eighties, but these trials have been discontinued. In recent clinical studies, it was shown that fosmidomycin is effective in curing uncomplicated Plasmodium falciparum malaria in humans. The treatment was well tolerated and resulted in a fast parasite and fever clearance. However, the high rate of recrudescence precludes the use of fosmidomycin as a monotherapy. In drug combination studies, the synergy of fosmidomycin with clindamycin was observed. Clinical studies with a fosmidomycin-clindamycin combination are currently ongoing.