Generic Lidocaine Spray, also known as Climax Spray, is a topical spray used to temporarily slow ejaculation in men suffering from premature ejaculation. It contains lidocaine, which numbs the penis and reduces sensitivity. Climax Spray should be applied to the penis 10 minutes before sex and can delay ejaculation for up to an hour with little to no transfer to partners. Side effects are minor but it should not be used if pregnant or allergic to lidocaine.