More than a decade after the FDA declared DMAA illegal in supplements, it and its chemical cousins still turn up in pre-workouts — often disguised as a "natural plant extract."
DMAA: illegal since 2013, still not fully gone
DMAA (1,3-dimethylamylamine) was marketed for years as a natural extract of geranium plants and used widely in pre-workout and fat-burning supplements. The FDA found no reliable scientific data supporting that geranium origin claim, and in April 2013 declared DMAA illegal for use as a dietary supplement ingredient, citing links to serious cardiovascular events including heart attack, stroke, and brain hemorrhage. Despite years of warning letters, criminal prosecution of at least one major manufacturer, and product recalls, DMAA has continued to surface in some products, sometimes reformulated under new names.
DMHA: the replacement that followed the same path
After DMAA was pushed out of the market, DMHA (2-aminoisoheptane, also sold as octodrine) became a common substitute in pre-workout formulas. The FDA classified DMHA as an unsafe food additive and considers supplements containing it adulterated, issuing warning letters to companies as far back as 2019. DMHA remains legally in a gray area as an unapproved "new dietary ingredient" — meaning the FDA has stated there isn't sufficient safety evidence for its use, without a full outright ban matching DMAA's history.
Names to watch for on a label
- DMAA: also listed as 1,3-dimethylamylamine, methylhexanamine, or "geranium extract" / "geranium stem"
- DMHA: also listed as octodrine, 2-aminoisoheptane, or 1,5-dimethylhexylamine
- DMBA: a related stimulant (1,3-dimethylbutylamine), also sold as "AMP citrate," determined unsafe by the FDA in 2015 with warning letters issued to numerous companies
Since these names shift as formulators try to stay ahead of scrutiny, treat any unfamiliar "amine" or "extract" ingredient in a pre-workout as worth researching individually before use.
Why this matters beyond the legal status
These aren't just regulatory technicalities — DMAA-linked products have been associated with serious adverse cardiovascular events, and both DMAA and DMHA act as stimulants and vasoconstrictors capable of raising blood pressure and heart rate significantly. Independent testing has also found these compounds present as undeclared ingredients in products that don't list them at all, meaning label-reading alone doesn't fully protect you.
How to reduce your risk
- Check the full ingredient list for any of the names above, including lesser-known synonyms.
- Be cautious of any pre-workout marketed as delivering an unusually intense or "banned-substance-like" energy effect — this framing itself is a red flag.
- Favor products independently batch-tested by a third party (NSF Certified for Sport or Informed Sport both screen for a wide range of prohibited and unsafe stimulants).
- If you experience heart palpitations, chest tightness, or unusual shortness of breath after taking a pre-workout, stop immediately and seek medical attention.
What this means practically
- A stimulant being marketed as a "natural plant extract" is not proof of a naturally occurring, safe ingredient — DMAA's entire marketing history was built on a geranium claim the FDA found no evidence for.
- DMAA and DMHA can appear on a label under several different names, so checking the exact ingredient list matters more than checking the product name or claims.
- Third-party batch testing catches undeclared stimulants that a normal label check cannot.
- Cardiovascular symptoms after taking a pre-workout are a reason to stop and seek care, not something to push through.
Sources
- Operation Supplement Safety (OPSS) — DMAA prohibited stimulant fact sheet: opss.org
- Qalitex Labs — FDA warning letter history for DMAA and DMHA in pre-workouts: qalitex.com
Related Kibbo Tools
- Supplement Label Safety Checklist — check the full ingredient list for unfamiliar stimulant names before buying.
- Adverse Reaction Report — document a suspected reaction if one occurs.