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Many medications are supplied in different strengths, so it’s no wonder that Viagra, probably the world’s most popular prescription drug, is as well. The lowest dose is 25mg, which may be issued to a patient experiencing ED for a number of reasons.

When Higher Doses Produce Side Effects

This dose contains half the amount of the active ingredient, sildenafil, contained in the recommended starting dose. As a result, those who successfully treated their ED but noticed a mild adverse response after taking the regular version for the first time, such as a headache or slight visual problems, may be advised to use a reduced dose such as this one.

In the case of any treatment, a doctor will try to issue the lowest possible dose to limit the risk of side effects.

When the Risk of Side Effects is Slightly Increased

If a first-time patient is more susceptible to mild side effects, then a doctor may choose to prescribe this lower dose. However, those with certain conditions may be unable to use Viagra in any form.

Please note that if you notice any side effects when using Viagra which become serious, you should stop using the treatment and notify your doctor as soon as possible.

Rate of Success

Clinical trials undertaken with different doses of sildenafil have shown a fairly consistent trajectory of results in terms of efficacy:

  1. the 25mg dose is reported to have produced erections durable enough for sexual intercourse in 63% of cases
  2. the next highest dose in 74%
  3. and the highest available in 82%.
  4. With these figures in mind, a reduced dose of Viagra is not likely to be drastically less effective in many cases than a higher dose.

Which dosage should I use?

It really depends on your individual situation:

  1. If you have any conditions which may make using Viagra in any form potentially dangerous, then you should not use it. In these cases we would recommend that you speak to your doctor about the possibility of alternative treatment.
  2. Those looking to buy Viagra for the first time, who are experiencing ED symptoms but do not have any medical conditions and are generally healthy, are generally advised to use the middle dose.
  3. However, if you have tried this dose and found that it has produced more than sufficient results, but incurred mild adverse effects, such as a headache, then the 25mg version may be the right dose for you.

You can find out more by consulting our pages on the different available doses, or consulting your doctor.