In a recent study, researchers analyzed 17 brands of weight loss or sports products labeled as supplements that listed deterenol (or a synonym) as an ingredient.
All contained either deterenol or other unapproved stimulants (or both). Some, like 1,3-DMAA, may cause heart attacks, warns the FDA. All are illegal.
What to do
Beware of supplements marketed as weight, fat-burning, or pre-workout aids. Some may contain unsafe stimulants.
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