Phenarsone sulfoxylate (Aldarsone), a pentavalent arsenical, is a condensation product of 3-amino-4 hydroxylphenylarsonic acid with sodium formaldehyde sulfoxylate. It is an antiamoebic agent. Aldarsone has a spirochetal power superior to that of tryparsamide. Aldarsone may be used in conjunction with artificial fever therapy and penicillin therapy to improve the results in symptomatic syphilis of the central nervous system (neurosyphilis).

Amiprilose hydrochloride (brand name Therafectin), a novel synthetic carbohydrate with anti-inflammatory properties, which was developed for the treatment of rheumatoid arthritis. In September 1993, FDA informed that this drug could not be approved because there was not adequate data demonstrating the drug’s effectiveness.

Actinoquinol is sunscreen agent that absorbs Ultraviolet B light. Actinoquinol in combination with hyaluronic acid drops might be helpful for the human eye in the defense against photooxidative and other oxidative processes.