There are lots of erectile dysfunction drugs on the market, but the ones approved for use in the UK are part of a group of medicines known as PDE5 inhibitors. This includes:

These drugs all work in the same way by relaxing the arteries at the base of the penis to increase blood flow for a firm, long-lasting erection. 

Though they are considered to be equally effective, they perform in different ways and you might find that you are more suited to one brand over another. 

If you’ve been using the same tablet for a while and you’re not happy with the results, speak to your pharmacist or GP about switching to an alternative. 

Although all of our content is written and reviewed by healthcare professionals, it should not be substituted for or used as medical advice. If you have any questions about your health, please speak to your doctor.

Authored Jan 10, 2022 by Joseph Issac, MPharm
Reviewed May 13, 2025 by Prabjeet Saundh, MPharm
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