Acacia rigidula is a shrub found in Texas and Mexico. It contains chemicals with stimulant effects and is used in some weight loss and sports supplements.
Stimulants in Acacia rigidula can affect the heart and may be unsafe. Many Acacia rigidula supplements have been shown to contain large amounts phenethylamine. Phenethylamine is found in Acacia rigidula naturally, but the amounts found in supplements is often greater than would be expected.
People use Acacia rigidula for athletic performance, obesity, and many other conditions, but there is no good scientific evidence to support these uses.
Many supplements listing Acacia rigidula have been found to contain an amphetamine-like chemical called called beta-methylphenethylamine (BMPEA). It is not found naturally in Acacia rigidula or any other known plants. Any dietary supplement products containing BMPEA are considered misbranded by the US FDA. See separate listings for more details on phenethylamine and BMPEA.
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