Had a few too many drinks last night? Deficient in certain vitamins? IV therapies might be the secret to a quicker recovery, though their true benefits are up for debate.

Enter Reviv is a medical spa based in Knightsbridge, London, that charges wealthy Londoners around £200 for intravenous treatments. The company is famous for its "recovery infusion" IV drip ...

After each blood or plasma donation, there is often intravenous (IV) fluid, or saline, left over in the bag. Until recently it would have been discarded. But Dr Cole saw new potential for the ...