Vitamin supplements can boost energy, lose weight, beat stress, improve performance, and reduce wrinkles, but taking too many of them could lead to an unwanted side effect. According to express.co.uk, vitamin supplements may cause heartburn in some people. The pills could irritate the oesophagus, or allow some stomach acid to creep back up the oesophagus when it enters the stomach, the scientist said. He also noted that heartburn could be caused by the pill's shape or size, and switching brand may help to reduce the pain.

But if the problem continues even after that, it may be a good idea to stop taking the supplements altogether. He noted, "Heartburn is a catchall term for a burning sensation in your oesophagus. A vitamin pill, which can be fairly large, could cause either irritate the oesophagus as it goes down or allowing some acid from the stomach to pass up into the oesophagus as…