TILIDINE is a low to medium potency opioid analgesic. It is metabolized to its active metabolites, nortilidine and bisnortilidine. Its analgesic activity is largely exerted through nortilidine which is a potent agonist at Mu opioid receptors.

Oxolamine under brand names Symphocal, Perebron is used in some countries as a cough suppressant for the treatment of pharyngitis, tracheitis, bronchitis, bronchiectasis, pertussis. Oxolamine possesses anti-inflammatory activity, which causes a reduction in the irritation of the nervous receptors of the respiratory tract.

Vinburnine is a nutritional product, a peripheral vasodilator with cerebral activities that also act as a cerebral metabolic stimulant and appears to be able to relax the smooth muscle cells within the walls of blood vessels. (+/-)-Eburnamonine is the racemate of the alkaloid Vinburnine. Dextrorotatory, levorotatory, and racemic forms of eburnamonine exist in nature. The (-)-form, also known as vincamone (isolated from Vinca minor), is a drug that possesses a stimulating activity for muscle and is used as cerebrotonic, whereas both enantiomers have hypotensive effects.

Piperaquine is a bisquinoline antimalarial drug that was first synthesized in the 1960s and used extensively in China and Indochina as prophylaxis and treatment during the next 20 years. Usage declined in the 1980s as piperaquine-resistant strains of P. falciparum arose and artemisinin-based antimalarials became available. However, during the next decade, piperaquine was rediscovered by Chinese scientists as one of a number of compounds suitable for combination with an artemisinin derivative. The rationale for such artemisinin combination therapies (ACTs) was to provide an inexpensive, short-course treatment regimen with a high cure rate and good tolerability that would reduce transmission and protect against the development of parasite resistance. Piperaquine is characterized by slow absorption and a long biological half-life, making it a good partner drug with artemisinin derivatives which are fast acting but have a short biological half-life.

Aminopropyl racementhyl phosphate is a prodrug of menthol patented by Pacific Corporation (Korea). Upon administration, it is enzymatically decomposed into menthol and 3-aminopropylphosphoric acid, a component used for anti-aging cosmetic composition. Aminopropyl racementhyl phosphate was found to reduce the irritation of menthol while maintaining its useful effects.

Isaxonine (N-isopropyl-amino-2-pyrimidine orthophosphate) is able to accelerate nerve regeneration and functional recovery. Isaxonine has specific affinity for peripheral nerves. It acts directly on the neuron or indirectly by stimulating the production of a growth factor remains unknown. It demonstrates activity in the treatment of neuropathies of various etiology. Isaxonine treatment may be associated with hepatotoxicity.

Naphthoquine is an antimalarial drug first synthesized in China in 1986 but which was not developed for clinical use until the late 1990s. This drug now is used in combination for treatment of Plasmodium Falciparum and Malaria. The use of anti-malarial drug combinations with artemisinin or with one of its derivatives is now widely recommended to overcome drug resistance in falciparum as well as vivax malaria. The fixed oral dose artemisinin-naphthoquine combination (ANQ, ARCO™) is a newer artemisinin-based combination (ACT) therapy undergoing clinical assessment.

Antihistamine agent

Paramethasone is a glucocorticoid. It exerts anti-inflammatory and immunosuppressant actions. Paramethasone stimulates the synthesis of enzymes needed to decrease anti-inflammatory response. It suppresses the immune system by reducing activity and volume of the lymphatic system, thus producing lymphocytopenia decreasing passage of immune complexes and possibly by depressing reactivity of tissue to antigen-antibody interactions.

Piperaquine is a bisquinoline antimalarial drug that was first synthesized in the 1960s and used extensively in China and Indochina as prophylaxis and treatment during the next 20 years. Usage declined in the 1980s as piperaquine-resistant strains of P. falciparum arose and artemisinin-based antimalarials became available. However, during the next decade, piperaquine was rediscovered by Chinese scientists as one of a number of compounds suitable for combination with an artemisinin derivative. The rationale for such artemisinin combination therapies (ACTs) was to provide an inexpensive, short-course treatment regimen with a high cure rate and good tolerability that would reduce transmission and protect against the development of parasite resistance. Piperaquine is characterized by slow absorption and a long biological half-life, making it a good partner drug with artemisinin derivatives which are fast acting but have a short biological half-life.