Take one 2 mg dissolvable tablet about 30–60 minutes before sexual activity, allowing it to fully dissolve under the tongue. Do not take more than one dose in 24 hours, and do not exceed 8 doses per month. Effects typically begin within about an hour and may last up to 12 hours, with residual effects for up to 24 hours. Always follow your medical provider’s guidance and avoid combining with other treatments unless advised.