Vidalista is available in different strengths because tadalafil dosing can be adjusted according to the person’s needs, treatment schedule, effectiveness, and tolerability. For tadalafil generally: 2.5 mg: commonly used as a once-daily starting dose for ED. 5 mg: may be used daily for ED and is also the standard daily dose for BPH. 10 mg: commonly used as an as-needed starting dose before ***** activity. 20 mg: may be used as an as-needed higher dose when 10 mg isn't sufficiently effective and is tolerated. A higher strength doesn't necessarily mean better results; it can also increase the likelihood of side effects. The appropriate strength should be determined with a healthcare professional. Also, tadalafil should not be combined with nitrate medicines, because this can cause a dangerous drop in blood pressure.