Methylliberine (Dynamine) in Oral Pouches

Methylliberine is a purine alkaloid in the same family as caffeine and theacrine. The commercial ingredient is Dynamine, marketed by Compound Solutions, which describes it as self-affirmed GRAS and says it has been on the market since 2018. It is sold in a pure grade and a 40% grade, where the balance is carrier.

It is a younger ingredient than most energy actives, and the evidence base reflects that. The first published human safety study, in 2020, states in its abstract that no human safety data on the compound had been published before it.

It fits physically. The doses used in human studies, 100 to 150mg a day, fit inside PouchMade's typical 250-280mg actives budget per pouch (about 300mg at most, in a standard 0.6g pouch), using 36-60% of it in pure grade (100/280 to 150/250). The constraint is what else has to share that budget, which is covered in the dose section.

The case for using it is as a caffeine partner. The supplier states that co-dosing Dynamine increases caffeine exposure and half-life. Whether a brand wants that or not, it is a pharmacokinetic interaction that has to be designed around in any stacked caffeine and methylliberine pouch, not treated as a free bonus.

On absorption, be precise. Methylliberine is chemically related to caffeine, a small-molecule class that can absorb partly through the oral mucosa, but no published study measures methylliberine absorption from a pouch. The honest description is a premeasured, convenient format: some of the dose may absorb in the mouth, and the rest is carried by saliva and swallowed.

The supplier does not publish a dose on its ingredient page. The working range comes from study designs. VanDusseldorp et al. (Nutrients, 2020) ran a 4-week trial in 125 adults with five arms: 100mg, 150mg, 100mg plus 50mg TeaCrine, 150mg plus 25mg TeaCrine, and placebo. It found small, statistically significant changes over time in heart rate, systolic blood pressure, QTc, ALT, and creatinine, which the authors judged not clinically significant. No human safety data beyond 4 weeks was found. On efficacy, La Monica et al. (Nutrients, 2023) reported improved affect but no change in cognition.

Methylliberine is rare in pouches. In a PouchMade review of about 36 non-nicotine pouch formulas on major US marketplaces in September 2026, none used it. The ingredient supplier does list a nicotine-free pouch product combining Dynamine with TeaCrine, so the format has precedent, but no formula in the review sample carried it.

PouchMade's standard pouch is 0.6g (0.5g and 0.7g are also available), and the actives budget is typically 250-280mg per pouch, about 300mg at most, with filler, flavor, and sweetener making up the rest. In pure grade, a studied 100-150mg dose uses 100-150mg of that budget and leaves roughly 100-180mg for caffeine and any other active (250-280mg minus 100-150mg). In 40% grade, 100mg weighs 250mg, which uses a typical budget by itself, and 150mg weighs 375mg, past the 300mg ceiling, so it does not fit in one pouch.

No published sensory data for methylliberine turned up in our research, so the flavor system has to be built on the bench. In a stacked energy pouch, caffeine usually sets the bitterness budget, and mint and wintergreen systems carry the strongest in-category precedent for masking bitter actives. The 40% grade is the other lever, at the cost of actives budget.

Published stability and hygroscopicity data for methylliberine in a pouch base were also not found. Plan stability testing on the finished formula, and account for the carrier in a diluted grade when judging flow and moisture behavior.

Assay is by HPLC-UV against a reference standard. The published LC-MS/MS method of Wang et al. (Journal of Chromatography B, 2020) quantifies caffeine, methylliberine, and theacrine together, which makes it useful for a stacked pouch where all three may need to be separated. A usable certificate of analysis should show:

• The grade (pure or 40%) and the identity of the carrier
• Assay against that grade, by a named HPLC method
• Related substances, including caffeine and theacrine
• Heavy metals and microbial results

Methylliberine is a post-DSHEA ingredient. As of September 2026, FDA's posted list of new dietary ingredient notifications has no entry for methylliberine or Dynamine, and there is no FDA GRAS notice. The supplier's position is self-affirmed GRAS. Self-affirmed GRAS is a food-use determination made by the supplier, not an FDA review and not an NDI notification, so whether the ingredient needs a notification for supplement use is an open legal question for regulatory counsel.

No FDA warning letters naming methylliberine were found in FDA's current index, and Amazon's dietary supplement policy has no methylliberine-specific restriction. Because the supplier reports that it raises caffeine exposure, label directions and daily limits for a stacked pouch deserve the same care as a high-caffeine product. Claims stay in structure/function territory with the standard DSHEA disclaimer. See Are Caffeine Pouches FDA Regulated? for the wider framework.

Methylliberine is an energy pouch ingredient, formulated with caffeine at 0-200mg per pouch and sometimes with theacrine. Caffeine shares the same 250-300mg actives budget, so next to 150mg of pure-grade methylliberine, caffeine tops out around 100-150mg per pouch. Dose, grade, and the caffeine interaction have to be set together, so it is developed through custom formulation in PouchMade's FDA-registered, GMP-certified facility in Dallas, Texas, where pouches are made as dietary supplements under 21 CFR 111 and packed 15 to a can.