Study Finds Synthetic Stimulants in Dexaprine SupplementsMay 21, 2014 — Dutch researchers are warning that Dexaprine, a popular weight-loss supplement sold in the United States, contains synthetic amphetamine-like stimulant ingredients.

These ingredients have been linked to cardiac arrest, chest pain, increased heart rate, vomiting, and other side effects, according to a study published in Drug Testing and Analysis.

Dexaprine is sold on websites like by iForce Nutrition, a California-based dietary supplement company. The manufacturer claims it contains an “elite mix of ingredients from all-natural plant extracts,” and the label lists ingredients like green tea extract.

However, USA Today reported that at least one American has reported suffering “life-threatening” heart problems and other health effects that required hospitalization after taking Dexaprine and another supplement.

Dutch health officials have removed Dexaprine from the market because it is associated with severe side effects. Although health officials have been warning about the problem since last year, no warnings have been issued in the United States. According to researchers:

“Reports to the Dutch Poisons Information Center (DPIC) showed that ingestion of as little as half a tablet caused several cases of nausea, agitation, tachycardia, and palpitations and even one case of cardiac arrest.”

Ingredients found in Dexaprine include:

  • synephrine
  • oxilofrine
  • deterenol
  • yohimbine
  • caffeine
  • theophylline
  • β-methyl-β-phenylethylamine (tentative identification)

This is not the first time iForce has been in hot water with health authorities. According to USA Today, iForce Nutrition pled guilty to manufacturing supplements that contained synthetic steroids in 2011.

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