Viagra dosage guide: how much to take and when
Choosing the right dose of Viagra (Sildenafil Citrate) is the most important practical decision after starting therapy. Viagra is supplied as tablet in 25mg, 50mg, 100mg, and the right dose for a given person depends on the indication, age, comorbidities and tolerance to the active ingredient Sildenafil Citrate.
Starting dose and titration
According to the prescribing information, most adults begin Viagra at the lowest available strength of 25mg, 50mg, 100mg and titrate up only if symptom control is insufficient and tolerability is good. Higher doses are reserved for selected cases. Older adults, people with renal or hepatic impairment, and those taking interacting medications should usually start at the lowest dose.
When to adjust
Dose adjustment is guided by symptom response and side effect burden, not by arbitrary schedules. During sexual stimulation, nitric oxide is released in the corpus cavernosum and activates an enzyme that produces cyclic GMP. If side effects are limiting at a given dose, going down a step is usually preferred over stopping abruptly. If the response is incomplete after several weeks, a higher dose can be tried under medical supervision.
Frequently asked questions
What is the standard starting dose of Viagra? ▾
Most adults start Viagra at the lowest strength of 25mg, 50mg, 100mg, with adjustment based on symptom response and tolerance. Older adults and those with reduced kidney or liver function generally start lower. The prescriber decides the exact starting dose for each person.
Can I take a higher dose of Viagra if it isn't working? ▾
Higher doses of Viagra should only be used after consulting the prescriber. Doubling on your own is unsafe, especially with active ingredients in the Erectile Dysfunction (ED) class. The prescriber can confirm whether titration is appropriate or whether the medication needs to be changed.
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The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.