Condoms have been used for years to reduce the risk of catching sexually transmitted infections (STI). However, DoxyPEP and Bexsero vaccine are two new ways for gay men to protect themselves. They are recommended for men who’ve recently had an STI or who regularly have new sexual partners. They may also be suitable for others at increased risk (e.g. if sex is part of your job).
Combined they have the potential to significantly reduce syphilis, chlamydia and gonorrhoea. Neither protect against infections caused by viruses such as herpes, warts, HIV or hepatitis.
Both treatments work in two ways. First, they help protect the person using them. Secondly they help ‘break the chain of infection’ between people. This amplifies the effect and helps protect the whole community. The more people using them, the greater the benefit for everyone.
DoxyPEP involves taking two 100mg tablets of an antibiotic called Doxycyline. The pills should be taken within 72hours after sex. Studies show that the medicine reduces the chance of getting chlamydia and syphilis by around 80%. Regular use of doxycycline can temporarily increase skin sensitivity to sunlight. The medicine can cause indigestion if taken on an empty stomach. It should not be used in pregnancy.
Bexsero vaccine was originally designed to protect children from meningococcal B meningitis (an infection of the tissues around the brain). It’s been given to millions of people around the world and is known to be safe. It’s been part of the UK childhood vaccination programme since 2015.
Studies show that the vaccine also reduces the chance of catching gonorrhoea by around 40%. That’s why the NHS is rolling out the vaccine to gay men and others at increased risk of gonorrhoea. It involves 2 doses given at least one month apart.