Benefits
Energy, focus and workout claims compared with the human research
DMHA is sold for energy, focus, appetite control and workout drive, but no placebo-controlled human trial of oral DMHA has been published, and a literature review found no randomized or other interventional human studies. US anti-doping and Defense Department sources both state that its safety and effectiveness in people are unknown.
What laboratory testing found inside DMHA-labeled products
Product analysis only. Across 13 supplements listing DMHA, only 4 actually contained it, at up to 112 mg per serving. Another analysis found octodrine at 72 mg per serving, while others named for DMHA held different stimulants such as 1,3-DMAA or 1,4-DMAA. Products labeled for a related stimulant held 18 to 73 mg of octodrine.
Plant-source labels compared with plant analysis
Lab analysis only. Labels often call DMHA an extract of Aconitum kusnezoffii, Kigelia or walnut. When 15 Aconitum and Kigelia plant samples were tested, none contained detectable DMHA. The DMHA in supplements was a racemic mix carrying synthesis byproducts, consistent with a synthetic chemical rather than a plant constituent.
Heart rhythm and activity in zebrafish larvae
Animal work only. In zebrafish larvae, a low octodrine concentration sped up the heart, while higher concentrations slowed it, disrupted conduction between heart chambers and, at the top level, left no detectable heartbeat. Lower concentrations reduced swimming. Fish exposed through water do not show what oral doses do in people.
Former use as an inhaled decongestant medicine
Octodrine was developed in the US in the 1950s as an inhaled treatment for bronchitis and laryngitis and sold as a nasal decongestant. Its pharmacology was then studied in cats, rabbits, dogs and pigs, where it raised heart rate and heart contractility. It is not part of any current approved medicine in the US.
Mechanism of action
Sympathomimetic stimulant related to DMAA
DMHA is a small alkylamine whose structure resembles the stimulants DMAA and 1,3-DMBA. Older animal studies showed sympathomimetic (adrenaline-like) effects, including faster heart rate and stronger heart contraction. How it acts in the human brain and body has not been characterized, and its psychoactive effects have not been formally studied.
Rapid conversion to heptaminol
Anti-doping researchers report that swallowed octodrine is rapidly metabolized to heptaminol, which becomes the main compound in blood. Heptaminol is itself a stimulant on the anti-doping list, and even a fraction of a milligram of octodrine from a contaminated supplement produced positive urine tests for both.
Concentration-dependent effects on the heart in an animal model
In zebrafish larvae, octodrine first increased and then, at higher concentrations, depressed heart rate and disrupted conduction, while nerve-activity genes and swimming changed at much lower levels. The authors present this as an initial hazard signal that needs study of real exposure levels.
Clinical trials
Laboratory analysis by two independent labs (NSF International and the Dutch public health institute RIVM) of US supplements whose labels suggested an analog of the banned stimulant DMAA. (Cohen et al. 2018, Clin Toxicol)
Six brands of sports and weight-loss supplements listing Aconitum kusnezoffii, DMHA, 2-amino-isoheptane or similar names; no human participants.
Octodrine was found at 72 mg per serving, more than twice the largest dose (8 to 33 mg) once used in European multi-ingredient medicines. The other products held different stimulants: the untested analog 1,4-DMAA (21 to 94 mg) and the banned stimulants 1,3-DMAA (24 to 35 mg) and 1,3-DMBA (51 mg). Labels did not reliably say which stimulant was inside.
Chemical analysis of supplements and of the plants named as DMHA sources, including the ratio of the compound's two mirror-image forms. (Wang et al. 2018, J Pharm Biomed Anal)
13 supplements listing 1,5-DMHA on the label or website and 15 Aconitum or Kigelia plant samples from various locations; no human participants.
None of the 15 plant samples contained detectable DMHA. Only 4 of the 13 supplements contained it at all, the highest at 112 mg per serving, over three times the highest European pharmaceutical dose. The compound was a racemic mix with two synthesis byproducts, pointing to a synthetic, poor-quality source.
Laboratory analysis by NSF International, RIVM and Belgium's Sciensano of supplements labeled as containing deterenol. (Cohen et al. 2021, Clin Toxicol)
17 US sports and weight-loss supplement brands bought online; no human participants.
Nine prohibited stimulants appeared in 8 different mixtures, with up to 4 experimental stimulants in one product. Octodrine was found at 18 to 73 mg per recommended serving. The authors stress that these stimulant combinations have never been tested in humans and their safety is unknown.
Literature review plus a survey of websites and user forums in several languages, November 2016 to January 2018. (Catalani et al. 2018, Brain Sci)
Published papers on octodrine (mostly from the 1940s and 1950s), online shops and self-reports from users; no study participants.
Apart from limited preliminary human data, no randomized or other interventional human study of octodrine was found. Old animal work in cats, rabbits, dogs and pigs showed rises in heart rate and contractility. Users online reported high blood pressure, breathlessness, raised body temperature, rapid heartbeat and anxiety, plus tolerance and withdrawal. Self-reports cannot establish cause or frequency.
Acute exposure study measuring heart function, swimming activity and gene expression after 2 hours in octodrine solutions. (Carrão-Dantas et al. 2026, Int J Mol Sci)
Zebrafish larvae 7 days after fertilization; no human participants.
Heart effects were two-sided: 5 micromolar raised atrial and ventricular rates, while 150 micromolar or more slowed the heart, higher levels disrupted conduction between heart chambers, and at 450 micromolar no heartbeat was detectable. Much lower concentrations reduced swimming. Water exposure in fish larvae does not show what an oral dose does in people.
Anti-doping case investigation with urine, hair and nail testing and a one-person controlled intake. (Alvarez et al. 2025, Clin Chim Acta)
One athlete with a positive anti-doping test and one volunteer who took a single serving of the same supplement.
A supplement contaminated with only 0.2 to 0.4 mg of octodrine per serving led to the athlete's positive heptaminol test, and a single serving made a volunteer's urine positive for both compounds; hair contained only heptaminol. Anti-doping authorities accepted contamination but still banned the athlete for 9 months. The first author served as the athlete's expert witness.