The Full Kratom Alkaloid Profile: Beyond Mitragynine and 7-OH

# The Full Kratom Alkaloid Profile: Beyond Mitragynine and 7-OH Most kratom conversations fixate on mitragynine and 7-hydroxymitragynine. Those are the heavyweights, but the plant produces over forty distinct alkaloids. Understanding the supporting cast matters for full-spectrum research and for interpreting traditional-use effects that isolated compounds do not reproduce. ## Mitragynine (Majority) The dominant alkaloid. 50-70% of total alkaloid content in fresh leaves. Covered in depth in [our 7-OH vs mitragynine article](/blog/7oh-vs-mitragynine). ## 7-Hydroxymitragynine (Headline Trace) Under 2% of leaves but pharmacologically the most potent by mass. The focus of modern [isolated tablet products](/product/pure-7oh-labs-blue-raz). ## Speciogynine Typically 5-10% of alkaloid content. Structural isomer of mitragynine with different receptor binding characteristics. Research interest in speciogynine as a smooth-muscle relaxant target is growing. ## Paynantheine Around 8-9% of alkaloids. Shows activity at alpha-adrenergic receptors alongside the mu-opioid partial agonism. Relevant to research on vascular and autonomic effects. ## Corynantheidine Minor alkaloid (usually under 1%). Contributes to the receptor binding profile of full-spectrum products. Pure corynantheidine isolates are uncommon. ## Speciociliatine Isomer of mitragynine. Often presented alongside mitragynine in traditional analyses. Research is limited. ## Ajmalicine Found in trace amounts. More familiar from other medicinal plants (including *Rauvolfia*). Pharmacology differs significantly from the main kratom alkaloids. ## Mitraphylline Oxindole alkaloid, also found in *Uncaria* species (cat's claw). Trace levels in kratom. ## Why the Full Profile Matters Whole-leaf kratom products deliver all these alkaloids together. Effects observed from whole-leaf research may reflect combined activity that isolated compounds do not reproduce. Isolate-based research eliminates this variance but loses ecological validity for traditional-use contexts. Our [comparison of extract vs leaf](/blog/7oh-extract-vs-leaf) addresses this tradeoff. ## Analytical Methods HPLC-UV and HPLC-MS are the standard analytical tools for alkaloid profiling. Properly conducted tests separate and quantify each major peak. Vendors who only report "total alkaloids" without breakdown are giving you incomplete information. Our [lab results](/lab-results) show separated peaks for mitragynine and 7-OH as the headline content; full forty-compound analyses are available on request. ## How Profile Shifts with Vein Colour and Strain Red-vein strains typically have higher 7-OH and lower mitragynine ratios. White-vein strains have higher mitragynine and lower 7-OH. Green strains are intermediate. Specific strain identity (Maeng Da, Bali, Horn) also shifts minor alkaloid ratios. See [red vein vs green vein](/blog/red-vein-vs-green-vein-kratom) for the deeper breakdown. ## Implications for Product Selection Research question is dominant alkaloid: use isolate. Research question is alkaloid combination effect: use whole leaf. Research question is specific minor alkaloid: use full-spectrum extract with lab-verified minor-alkaloid content. Browse [our catalogue](/shop) for formats across the spectrum. *Products are sold for research purposes. Not for human consumption.*