How a 20-cent diabetes drug being used to reverse aging is giving people crappy results.

Metformin, known as a diabetes drug, has recently seen an uptick in off-label use for weight loss and anti-aging. The downside? It can have some severe gastrointestinal side effects, including diarrhea without warning.

But why are people suddenly so interested in Metformin as an anti-aging method? That would be because of the TAME Trial.

Conducted by the American Federation for Aging Research, the TAME (or Targeting Aging with Metformin) Trial is a series of nationwide, six-year clinical trials at 14 leading research institutions across the country that will engage over 3,000 individuals between the ages of 65-79.

However research has found that anywhere from one tenth to one third of patients may not be able to even tolerate use of the medication.

Read the full article from Yahoo Life now.