VIAGRA may be the new mantra for the sexually 'depressed' male, but Indians have long had an impressive arsenal of libido-enhancers that allegedly do more than keep the 'Male Ego', as one of them is christened, erect. Ayurvedic in origin, they are exempt from the clinical trials that western brands go through before they can hit the market. For, their proponents argue, they are time-tested hand-me-downs of ancient medical wisdom.