--- title: "DMHA vs Caffeine: Side-by-Side Comparison (2026)" url: https://www.bodyhackguide.co/compare/dmha-vs-caffeine description: "Compare DMHA vs Caffeine side by side. We earn a commission on some vendor links. Mechanism, half-life, dose range, side effects and prices." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) # DMHA vs Caffeine Side-by-side comparison of DMHA and Caffeine: mechanism, half-life, dose range, safety profile, and vendor pricing. DMHA: no price on file Caffeine: no price on file ## Price snapshot ### DMHA Current low — 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ### Caffeine Current low — 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ## DMHA DMHA (octodrine) - chemically 2-amino-6-methylheptane, also sold as 2-aminoisoheptane or 1,5-dimethylhexylamine - is an aliphatic-amine central nervous system stimulant and a close structural analog of DMAA… No vendor price on file. Full DMHA profile (https://www.bodyhackguide.co/compound/dmha) ## Caffeine Caffeine (1,3,7-trimethylxanthine) is a natural methylxanthine alkaloid found in the seeds, fruits, leaves, and bark of over 60 plant species — most notably Coffea (coffee), Camellia sinensis (tea), Theobroma cacao… No vendor price on file. Full Caffeine profile (https://www.bodyhackguide.co/compound/caffeine) ## Side-by-side comparison | Attribute | DMHA | Caffeine | | --- | --- | --- | | Category | Energy & Performance | Nootropic | | Research Stage | Historical pharmaceutical; no modern clinical trials | Preclinical | | Mechanism of Action | DMHA (octodrine; 2-amino-6-methylheptane / 1,5-dimethylhexylamine) is a simple aliphatic amine that behaves as an indirect sympathomimetic - structurally and pharmacologically a close cousin of DMAA (1,3-dimethylamylamine). Agents in this class raise synaptic… | Caffeine's mechanism is anchored in adenosine receptor antagonism but extends to several secondary pharmacological actions that together produce its characteristic profile of alertness, cognitive enhancement, cardiovascular effects, and metabolic activation.… | | Half-Life | Not formally characterized in humans. After ingestion, octodrine is rapidly metabolized to heptaminol, which becomes the predominant compound detected in blood and urine within hours [PMID:39401652]. Users commonly report perceptible stimulant effects lasting roughly 3-6 hours, but this is anecdotal rather than measured pharmacokinetics. | — | | Typical Dose Range | 75-200 mg per dose (anecdotal pre-workout range; ~75,000-200,000 mcg). Historical pharmaceutical unit dose was 8-33 mg. No approved or clinically validated dose exists. | — | | Dosing Frequency | Acute, single-session (pre-workout) use rather than a daily or continuous compound. Users typically leave rest days between doses to limit tolerance buildup and cardiovascular strain; there is no evidence base for any regular dosing schedule. | — | | Administration | — | — | | Side Effects | Reported and expected effects reflect its sympathomimetic activity: elevated blood pressure and heart rate, palpitations or tachycardia, chest tightness, shortness of breath (dyspnoea), overheating (hyperthermia), anxiety and jitteriness, headache, insomnia,… | Caffeine's side effects range from minor acute effects to serious toxicity at extreme doses, with substantial individual variability reflecting genetic (CYP1A2), physiological, and psychological factors. Common acute side effects (dose-related): At typical… | | Molecular Weight | 129.24 g/mol (free base; molecular formula C8H19N). Commonly supplied as a salt (e.g., hydrochloride or, historically, camphorsulfonate), which increases the labeled mass per dose. | — | | Common Vial Sizes | — | — | ### DMHA: potential benefits - Increased energy and perceived training intensity - the reason it is added to pre-workout products (reported by users; not established in any controlled trial) - Sharper focus and heightened alertness from central nervous system stimulation - Appetite suppression, which is why it appears in 'fat-burner' formulas - Mild mood lift or euphoria reported anecdotally - Users often describe a longer, 'smoother' stimulant feel than caffeine alone - again anecdotal, not clinically demonstrated ### Caffeine: potential benefits - No structured benefit list published. ## Frequently asked ### What's the difference between DMHA and Caffeine? DMHA is a energy & performance that dmha (octodrine; 2-amino-6-methylheptane / 1,5-dimethylhexylamine) is a simple aliphatic amine that behaves as an indirect sympathomimetic - structurally and pharmacologically a…. Caffeine is a nootropic that caffeine's mechanism is anchored in adenosine receptor antagonism but extends to several secondary pharmacological actions that together produce its characteristic profile of…. The two differ in mechanism, half-life (Not formally characterized in humans. After ingestion, octodrine is rapidly metabolized to heptaminol, which becomes the predominant compound detected in blood and urine within hours [PMID:39401652]. Users commonly report perceptible stimulant effects lasting roughly 3-6 hours, but this is anecdotal rather than measured pharmacokinetics. vs not reported), and typical dose range. ### Which has the longer half-life, DMHA or Caffeine? DMHA has a half-life of Not formally characterized in humans. After ingestion, octodrine is rapidly metabolized to heptaminol, which becomes the predominant compound detected in blood and urine within hours [PMID:39401652]. Users commonly report perceptible stimulant effects lasting roughly 3-6 hours, but this is anecdotal rather than measured pharmacokinetics.. Caffeine has a half-life of not reported. Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Can you stack DMHA and Caffeine? Stacking depends on mechanism overlap, safety profile, and goals. DMHA and Caffeine should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds. ## See current vendor prices Listings from the vendors we track. Prices change often, so check the vendor before you buy. DMHA prices: https://www.bodyhackguide.co/compound/dmha?tab=prices Caffeine prices: https://www.bodyhackguide.co/compound/caffeine?tab=prices Compare all compounds: https://www.bodyhackguide.co/compare ### Before you buy DMHA or Caffeine Check the vendor trust score. Every supplier we track is rated 0-100 on COA verification, payment transparency, shipping, reviews, and listings: one published, reproducible methodology, applied to every vendor. View Vendor Scorecard (https://www.bodyhackguide.co/vendors/scorecard) ## Related comparisons Theacrine vs Caffeine: https://www.bodyhackguide.co/compare/theacrine-vs-caffeine **Research use only.** BodyHackGuide is a research and price-comparison reference. The compounds discussed on this page are not approved by the FDA for human consumption and are sold strictly for laboratory research. Prices shown are pulled from vendor listings tracked on BHG and are subject to change. 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