“I take 20 mg Cialis pill and it works as expected but after sexual intercourse I sometimes feel muscle pain in the back and fatigue. I do not know if this is because I work like a stud or it is a side effect. Anyway I am lucky that I gave it a try.”

Why I must buy expensive pills while I can get generics on line with delivery to my place and for considerably lower price. I am ready to accept the situation that customer support sometimes can be dull when I want to trace my order.

STIs are particularly common among young people, with health experts saying testing for them is vital.

IAVI, Moderna and the University of Oxford are all working on new vaccines.

BBC Panorama has seen documents and spoken to former midwives from Nottingham University Hospitals NHS Trust.

The drug, daraxonrasib, has been hailed as a breakthrough in managing the deadliest of all the major cancers.