LONDON - A “women’s Viagra” that is hoped to boost flagging libido may soon be available. The new pill, called Lybrido, uses a combination of testosterone and a Viagra-like drug in a bid to increase sexual desire and improve sexual satisfaction. The drug is hoped to be on sale within three years, the Daily Telegraph reported. Viagra has proved to be an extremely profitable drug, with worldwide sales at nearly £1.5 billion (S$2.9 billion) a year. Scientists have so far struggled to create a female version of the drug, however, because while Viagra has a physiological action on men, increasing female arousal depends as much upon psychological as physical factors. Dutch firm Emotional Brain claims to have developed a pill that resolves this dilemma by combining a Viagra-like drug with testosterone. The physical effect of Viagra magnifies the effect of testosterone on the brain’s pleasure centres, and the pill should be taken three and a half hours before sex to have an effect. The results...