Methylliberine,
does it really help with Caffeine-free alertness, focus, and exercise energy?
research showsThe standalone human efficacy literature is not zero. In a 25-person crossover trial, Dynamine® 100 mg improved some subjective ratings of energy, concentration, motivation, and mood but did not improve objective Stroop or TMT-B cognition. Exercise and tactical-performance trials combined it with caffeine and theacrine and cannot isolate methylliberine. Human efficacy literature exists, but small manufacturer-funded, subjective-endpoint evidence warrants low C.
ads claimProducts describe methylliberine as a caffeine-free stimulant, yet it is often sold with caffeine, theacrine, or other pre-workout ingredients. Experience with a combination is not proof of standalone efficacy, tolerance, or safety.
Useful facts when choosing a product
- Overseas single-ingredient capsules and the standalone efficacy trial commonly use 100 mg.
- In Korea it is more readily encountered through overseas purchasing and multi-ingredient sports products than as a widely recognized standalone functional-health ingredient.
- Methylliberine can reduce caffeine clearance and extend caffeine half-life when coadministered.
- Marker-based safety data extend to about four weeks; long-term use, tolerance, dependence, pregnancy, lactation, and cardiovascular-disease data are insufficient.
What the research actually shows
The La Monica 2023 double-blind crossover trial gave 25 participants 100 mg for four days. Some subjective ratings were better at selected time points, but Stroop and TMT-B did not significantly change. The Cintineo 2022 trial in 48 tactical personnel compared 150 mg caffeine plus 100 mg methylliberine plus 50 mg theacrine with 300 mg caffeine and placebo; reaction time improved, while marksmanship and decision accuracy did not. A 125-person four-week study assessed safety rather than efficacy.
Why this is classified as C (40)
A standalone human trial exists, so the grade is not unknown. It is one manufacturer-funded 25-person study with partial subjective benefits and null objective cognition, while combination studies cannot isolate the ingredient. This supports C with 40 points.
Counterpoint. A large independent standalone RCT should evaluate objective vigilance, attention, exercise performance, caffeine comparison, tolerance, and long-term safety.
Rejudgment record. Reassessment (cross-check reflected) — Recognized the caffeine-free standalone trial but retained C for Compound Solutions support, selected subjective VAS benefits, null objective Stroop and TMT-B, and non-attributable combination trials
Sub-claim grades by effect
This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.
| Effect (sub-claim) | Grade | Basis |
|---|---|---|
| Subjective alertness, energy, and concentration | C | Partial positive findings in one 25-person manufacturer-funded standalone crossover trial |
| Objective attention and cognitive performance | C | Null Stroop and TMT-B in one small trial; not repeated large-trial refutation |
| Standalone exercise energy and performance | ? | Identified performance trials combined methylliberine with caffeine and theacrine |
Cross-check — Codex and Claude
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| La Monica et al. (2023) | Double-blind randomized placebo-controlled crossover trial | 25 | Sponsored by Compound Solutions | VAS energy, concentration, and mood; Stroop; TMT-B | Some subjective improvements; no objective cognitive benefit | Key |
| Cintineo et al. (2022) | Randomized placebo-controlled parallel trial | 48 | Compound Solutions provided study products | Vigilance, marksmanship, reaction time, and blood pressure | The combination improved reaction time but not marksmanship or accuracy | Supportive |
| VanDusseldorp et al. (2020) | Four-week randomized safety trial | 125 | Sponsored by Compound Solutions | Cardiovascular, hematologic, and chemistry markers | No major marker abnormalities with 100-150 mg over four weeks; not an efficacy trial | Safety |
Receipt — 3 References
All 3 cited sources were verified for existence at the original page (as of 2026-07-16).
Reviewed and approved: Chamgap Editorial Team · Approval date: 2026-07-16 · Corrections: none
Cite this verdict
[Chamgap] Methylliberine (Dynamine®) x caffeine-free alertness, focus, and exercise energy — Evidence Grade C·40. 3 cited sources checked. Source: https://chamgap.com/en/verdicts/energy/methylliberine-dynamine-alertness-focus-energy/ · CC BY 4.0CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.
What this document does and does not do
Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.