Is Viagra Safe? Understanding Viagra’s Effectiveness And Safety

If you’re looking to start Viagra, it’s important to understand both its effectiveness and its safety. Here’s what you need to know from the team of experts at ZipHealth.

Is Viagra Safe? Understanding Viagra’s Effectiveness And Safety
Understanding Viagra's Effectiveness And Safety

Viagra – and its unbranded version, sildenafil – are popular treatments for erectile dysfunction, and have been for over two decades.

A PDE5 inhibitor, Viagra helps relax the blood vessels and increase blood flow to the penis, so you can get and maintain an erection during sexual activity.

If you’re looking to start Viagra, it’s important to understand both its effectiveness and its safety. Here’s what you need to know.

Are there any side effects? 

Some people may experience mild side effects with Viagra. (1) The most common side effects are headache, flushing, muscle pain, a decrease in blood pressure, abnormal or blurred vision, back pain and dyspepsia (or indigestion). But evidence shows that taken within the recommended single-dose range (25-100 mg) and under the correct conditions, Viagra is safe. (2)

Are Viagra and generic sildenafil safe for everyone?

Viagra and generic sildenafil can cause adverse effects if taken alongside certain medications, or if you've got some specific health conditions, for example; hypotension, serious heart or liver problems, or stomach ulcers.

Is it safe to use Viagra long-term? 

Long-term studies of up to a year have shown that treatment with sildenafil – the active ingredient in Viagra – can significantly improve the duration and firmness of erections. Many people also report greater satisfaction with sex life, and increased frequency of erections when sexually stimulated. It's also reassuring to know that the chances of experiencing heart-related side effects such as high blood pressure, rapid heart rate, or palpitations with this treatment are low, at less than 1%. (3)

Where can I get Viagra? 

You can complete an online consultation with ZipHealth and receive the right medication directly to your door in discreet, unmarked packaging. 

If you’re experiencing any of the medical conditions listed above and want medical advice on the treatment options available to you, just make our healthcare professionals aware of your medical history during your consultation, and they'll make a recommendation that's right for you. 

Start your free consultation here


1. Morales A, Gingell C, Collins M, Wicker P, Osterloh I. Clinical safety of oral sildenafil citrate (VIAGRATM) in the treatment of erectile dysfunction. International Journal of Impotence Research. 1998 Jun;10(2):69–73.

‌2. Lim PHC, Moorthy P, Benton KGF. The clinical safety of viagra. Annals of the New York Academy of Sciences [Internet]. 2002 May 1;962:378–88. Available from: https://pubmed.ncbi.nlm.nih.gov/12076989/ 

3. Steers W, Guay A, Leriche A, Gingell C, Hargreave T, Wright P, et al. Assessment of the efficacy and safety of Viagra® (sildenafil citrate) in men with erectile dysfunction during long-term treatment. International Journal of Impotence Research. 2001 Oct 1;13(5):261–7.