1.   So far, the best clinical research on food-based sexual stimulants is on yohimbe, an extract from the bark of a West African tree.

2.   Then, of course, there was his much-discussed work for Viagra, the sexual stimulant for men.

3.   Unfortunately for Will, the various baths and exercises the doctor prescribes prove to be a constant sexual stimulant.

4.   Such products are believed to cure bone ailments or act as sexual stimulants.

5.   Other reasons quoted were mental stress caused by medical treatment or accident, or used as sexual stimulant.