Chlamydia is the most common type of sexually transmitted infection (STI) in the UK. It can affect both men and women, is passed through unprotected sex and often shows no symptoms. However, visible symptoms can include pain during urination, unusual discharge and pain the testicles or stomach. When left untreated, Chlamydia can cause further problems including fertility issues. Shop our effective medications to relieve yourself from the pain of Chlamydia.