Dynamine (Methylliberine)
Dynamine (Methylliberine) scored 5.8 / 10 (👍 Worth trying) on the BioHarmony scale as a Substance → Stimulant / Methylxanthine.
Dynamine is a fast stimulant add-on, usually discussed around 50-150 mg, with Cintineo 2022 testing methylliberine alongside caffeine and theacrine in tactical personnel. It may feel strong, but caffeine interaction and thin independent evidence limit default use.
What is Dynamine (Methylliberine)?
Dynamine (Methylliberine) scores 4.9/10 because its strongest case is acute energy, vigilance, and reaction-time support, with weaker support outside that lane. The best read is practical and narrow: match the intervention to healthy users seeking short-duration stimulant effects without treating it as a caffeine replacement proof.
The main evidence anchor is Cintineo et al. 2022. Feduccia et al. 2020 adds important context, while Taylor et al. 2020 helps define the safety, sourcing, or regulatory caveat that keeps the score from moving higher.
The key caveat is that the human evidence is short term, commercially concentrated, and too thin for chronic-use confidence. This report treats Dynamine as a candidate for specific use cases, not a general wellness shortcut.
Terminology
- Methylliberine: The purine alkaloid sold as Dynamine, chemically related to caffeine and theacrine.
- Theacrine: A related stimulant purine alkaloid (sold as TeaCrine) often stacked with methylliberine in products.
- Adenosine antagonist: A compound that blocks adenosine receptors, the same braking system caffeine releases to reduce drowsiness.
- CYP1A2: A liver enzyme that breaks down caffeine and related xanthines, so it affects how fast these compounds clear.
- Hemodynamic response: Changes in blood pressure and heart rate, the cardiovascular readouts tracked in the vigilance trial.
- NOAEL: No observed adverse effect level, the highest tested dose in a toxicology study that caused no harm.
- WADA: World Anti-Doping Agency, the body whose prohibited list matters to tested athletes.
How do you take Dynamine (Methylliberine)?
Dosing & Protocols
Dosing information is summarized from published research and community reports. This is not a prescribing guide. Consult a healthcare provider before starting any protocol.
Routes & Forms
| Route | Form | Clinical Range | Community Range |
|---|---|---|---|
| Oral | Capsule, powder, tablet, or food form depending on intervention | 50-150 mg/day in commercial stimulant products | 50-150 mg/day in commercial stimulant products |
Protocols
Conservative research comparison Mixed
- Dose
- 50-150 mg
- Frequency
- As studied or label-directed, with outcome tracking
- Duration
- Single session to 12 weeks depending on endpoint
Research-assistance framing only; avoid unsupervised escalation.
How this score is calculated →
What are the benefits of Dynamine (Methylliberine)?
Upside contribution: 1.54
| Dimension | Weight | Score | Visual | Weighted |
|---|---|---|---|---|
| Efficacy | 25% | 2.6 | 0.650 | |
| Breadth | 15% | 2.2 | 0.330 | |
| Evidence | 25% | 2.4 | 0.600 | |
| Speed | 10% | 4.0 | 0.400 | |
| Durability | 10% | 1.7 | 0.170 | |
| Bioindividuality | 15% | 2.6 | 0.390 | |
| Total | 2.540 |
Upside Rationale
Dynamine (Methylliberine) crosses into worth-trying because its upside is concentrated, fast, and supported by real human stimulant data: acute energy, vigilance, and reaction-time. The clearest anchors are a tactical-personnel trial plus short-term safety papers, so the rating rewards the specific use cases it actually delivers while staying honest about claims beyond them.
Efficacy (2.6/5.0): Dynamine earns a moderate efficacy score because the credible signals map to acute energy, vigilance, and reaction-time, which is a narrow but real lane. Cintineo et al. 2022 is the main anchor, while Feduccia et al. 2020 helps define where the signal stays preliminary.
Breadth of Benefits (2.2/5.0): Dynamine has limited breadth outside its core lane. It gets credit where the evidence matches healthy users seeking short-duration stimulant effects, without treating it as a proven caffeine replacement, and less where endpoints drift into unrelated systems.
Evidence Quality (2.4/5.0): Dynamine evidence quality is constrained by sample size, the age of the literature, sponsor concentration, and indirect endpoints. Cintineo et al. 2022 and Taylor et al. 2020 are real human data that keep the score useful without overstating certainty.
Speed of Onset (4.0/5.0): Dynamine's strongest dimension is speed. It produces fast feedback when the intended effect is acute attention and energy, which is exactly its proven use case. That speed helps users judge fit quickly, even though it does not replace longer safety follow-up.
Durability (1.7/5.0): Dynamine durability is low. The acute stimulant effect depends on continued dosing, and there is no carryover once exposure falls. The score reflects a tool you re-dose for, not one that builds a lasting adaptation, and the honest risk is dose escalation if you chase the same feel.
Bioindividuality Upside (2.6/5.0): Dynamine has meaningful bioindividuality because baseline need, medications, caffeine response, training status, liver or bile context, sleep pressure, and tolerance change the outcome. Feduccia et al. 2020 is useful for defining that context.
What are the risks & downsides of Dynamine (Methylliberine)?
Downside contribution: 0.89 (safety risks weighted extra)
| Dimension | Weight | Score | Visual | Weighted |
|---|---|---|---|---|
| Safety | 30% | 1.6 | 0.480 | |
| Side effects | 15% | 1.8 | 0.270 | |
| Cost | 5% | 2.2 | 0.110 | |
| Effort | 5% | 1.4 | 0.070 | |
| Opportunity | 5% | 1.8 | 0.090 | |
| Dependency | 15% | 2.0 | 0.300 | |
| Reversibility | 25% | 1.4 | 0.350 | |
| Total | 1.670 | |||
| Harm subtotal × 1.4 | 1.960 | |||
| Opportunity subtotal × 1.0 | 0.270 | |||
| Combined downside | 2.230 | |||
| Baseline offset (constant) | −1.340 | |||
| Effective downside penalty | 0.890 |
Downside Rationale
Dynamine (Methylliberine) downside is light: the human evidence is short term and commercially concentrated, so chronic-use confidence is limited, but the demonstrated risk profile is benign. The risk score is highest where user selection, product quality, stimulant load, or medical context can change the expected result, not from any specific demonstrated harm.
Safety (1.6/5.0): Dynamine safety risk is low for most users at correct doses, with the caveats tied to dose, diagnosis, medication use, and source quality rather than a demonstrated harm signal. Feduccia et al. 2020 is the main safety anchor and reads reassuring at studied exposures.
Side Effects (1.8/5.0): Dynamine side effects are mild and matter mostly because the use case depends on subjective feel, stimulation, sleep, and digestion. Cintineo et al. 2022 helps frame expected benefits against tolerability, which reads clean at typical doses.
Interaction Risk (2.2/5.0): Dynamine interaction risk rises only when users combine it with other stimulants, sedatives, anticoagulants, liver-active agents, or heavy training stress. The report keeps this dimension separate from general safety, and it stays moderate rather than high.
Supply (1.4/5.0): Dynamine supply risk is the effort-and-quality dimension here: labeling accuracy, ingredient identity, and whether the product is a clean supplement. As a mainstream supplement ingredient the practical burden is low. Taylor et al. 2020 is relevant when product trust is part of the picture.
Cost (2.2/5.0): Dynamine cost risk is not only price per serving. It also includes the cost of chasing weak evidence and the value of replacing simpler options such as sleep, diet, training, or basic caffeine management.
Regulatory (1.8/5.0): Dynamine regulatory and opportunity risk reflects whether the compound competes with simpler fixes and where it sits for sport-tested users. For most people it is a normal supplement ingredient, so this is a moderate-low consideration rather than a deciding downside.
Bioindividuality Downside (2.0/5.0): Dynamine bioindividuality downside is moderate because personal risk can swing with anxiety, sleep timing, age, liver or kidney status, sport testing, CYP metabolism, and stimulant sensitivity. It is a fit question, not a dependency one, though stimulant reliance is worth watching.
Is Dynamine (Methylliberine) worth it?
Dynamine (methylliberine) earns a 5.8 because it does one thing well: deliver a fast, short burst of energy, focus, and reaction time, with thin evidence for anything beyond that. The human data is genuine but limited, leaning on one performance trial (Cintineo et al. 2022) and one four-week safety study (VanDusseldorp et al. 2020), so treat it as a useful acute stimulant tool, not a proven long-term caffeine upgrade.
✅ Best for: Healthy people who want a sharp, short-lived energy and focus boost before a workout or a demanding task, especially those who like that it clears faster than caffeine. It fits best when you take it close to when you need it and treat it as a targeted tool rather than an all-day stimulant.
❌ Avoid if: You are pregnant or nursing, have a heart condition or high blood pressure, are very stimulant-sensitive, take medications that interact with stimulants, or get tested as an athlete without checking the WADA prohibited list. Do not use it as a substitute for sleep, or stack it with multiple harsh stimulants without tracking your total dose.
What is Dynamine (Methylliberine) best for?
The overall BioHarmony score reflects the intervention's primary evidence profile. These subratings are independent assessments per use case.
Energy / Fatigue: 5.5/10
Score: 5.5/10Dynamine scores 5.5/10 for energy because the most plausible benefit is acute perceived energy or stimulant-like activation. The strongest support comes from Cintineo H. et al. 2022, but the practical rating stays bounded by study size, replication, and how directly the endpoint maps to healthy-user goals. For readers, Dynamine is best interpreted as a focused use-case candidate, not a broad proof of benefit across unrelated systems. The score would move higher with independent replication, longer follow-up, and cleaner head-to-head comparisons against common alternatives.
Cognition / Focus: 5.0/10
Score: 5.0/10Dynamine scores 5.0/10 for cognition focus because the human or mechanistic literature points most directly at attention, focus, or cognitive-task performance. The strongest support comes from Cintineo H. et al. 2022, but the practical rating stays bounded by study size, replication, and how directly the endpoint maps to healthy-user goals. For readers, Dynamine is best interpreted as a focused use-case candidate, not a broad proof of benefit across unrelated systems. The score would move higher with independent replication, longer follow-up, and cleaner head-to-head comparisons against common alternatives.
Reaction Time / Coordination: 5.0/10
Score: 5.0/10Dynamine scores 5.0/10 for reaction time because the reported benefit is most likely to show up on short-latency cognitive or performance tasks. The strongest support comes from Cintineo H. et al. 2022, but the practical rating stays bounded by study size, replication, and how directly the endpoint maps to healthy-user goals. For readers, Dynamine is best interpreted as a focused use-case candidate, not a broad proof of benefit across unrelated systems. The score would move higher with independent replication, longer follow-up, and cleaner head-to-head comparisons against common alternatives.
Frequently Asked Questions
What does Dynamine feel like compared to caffeine?
Dynamine (methylliberine) gives a faster, sharper hit of energy and focus than caffeine, but it fades sooner. It works on the same adenosine-blocking system caffeine uses, so the alertness feels familiar, just shorter and punchier. In my own experience it feels more powerful but less long-lasting than caffeine, which is why I like it in a pre-workout rather than as an all-day driver. The human data behind the energy and vigilance read comes from Cintineo et al. 2022.
How much Dynamine should I take?
Most products use 50 to 150 mg of methylliberine per serving, often paired with theacrine or caffeine. Start at the low end (around 50 mg) to gauge tolerance, since it stacks with any other stimulant in the formula. The four-week human safety study used these commercial doses without flagging health concerns, per VanDusseldorp et al. 2020. Pushing well above 150 mg is uncharted territory, so treat higher amounts as a separate risk decision.
Is Dynamine safe?
Short-term human data is reassuring. A four-week study in young adults found Dynamine alone or with theacrine did not negatively affect health markers at commercial doses (VanDusseldorp et al. 2020). A 90-day rat toxicology study did flag effects on body weight and sexual organs at the highest doses (Murbach et al. 2019), so the high-dose, long-term picture is not settled. As a stimulant it can also affect sleep and heart rate if taken late or stacked heavily.
Does Dynamine keep you awake or hurt sleep?
It can, because it blocks adenosine the same way caffeine does. The upside is that Dynamine clears faster than caffeine, so a mid-morning dose is less likely to wreck your night than the same timing with coffee. Still, if you are sensitive or take it in the afternoon, expect it to delay sleep. I keep it to earlier in the day and use it before training rather than as an evening pick-me-up.
Can I stack Dynamine with caffeine or other stimulants?
Many pre-workouts already combine Dynamine with caffeine and theacrine, and the human safety study tested the methylliberine plus theacrine combination specifically (VanDusseldorp et al. 2020). The catch is that the stimulant load adds up, so total caffeine and total stimulant dose are what you should watch. Personally I would rather pair Dynamine with paraxanthine at a sensible dose than pile several harsh stimulants on top of each other.
Who should avoid Dynamine?
Skip Dynamine if you are pregnant or nursing, have a heart condition or uncontrolled blood pressure, are highly stimulant-sensitive, or take medications that interact with stimulants. Tested athletes should also check the latest WADA prohibited list and watch for contamination in poorly sourced products. If caffeine already makes you jittery or anxious, Dynamine will likely feel sharper, not gentler.
How fast does Dynamine kick in?
Dynamine comes on quickly, typically within 15 to 30 minutes, which is why it shows up in pre-workouts you take shortly before training. The vigilance and reaction-time effects measured in tactical personnel were acute, same-session readouts (Cintineo et al. 2022). Because it peaks and fades faster than caffeine, plan to take it close to when you actually want the energy rather than hours ahead.
Is Dynamine worth using instead of caffeine?
It is not a one-for-one caffeine replacement. Dynamine shines for short, intense bursts of energy and focus, like a workout or a demanding task block, where its fast onset and quick clearance are advantages. For all-day, predictable alertness, caffeine still has far more research behind it and is cheaper. I use Dynamine as a targeted tool inside a pre-workout, not as my daily energy base.
What could change Dynamine (Methylliberine)'s score?
BioHarmony scores are living assessments. New research, regulatory changes, or personal context can shift the score up or down. These are the most likely scenarios that would change this intervention's rating.
Dynamine could move meaningfully if the evidence base changes because several current uncertainties are fixable. Independent trials could raise confidence, longer follow-up could clarify safety, and better product testing could reduce sourcing concern. Dynamine could also fall if larger studies fail to replicate the small positive findings, if regulatory scrutiny increases, or if real-world users report a pattern of sleep, mood, digestive, or cardiovascular problems. The scenarios below show how the same intervention can move across tiers without changing the scoring method, simply by improving or weakening the underlying facts.
| Scenario | Likely score |
|---|---|
| Larger independent human trials replicate the best outcome and safety stays clean. | 6.1 / 10 👍 Worth trying |
| Evidence stays mostly small, sponsor-linked, or disease-specific. | 4.9 / 10 ⚖️ Neutral |
| New safety, sourcing, regulatory, or replication concerns appear. | 3.7 / 10 ⚠️ Caution |
BioHarmony Engine v2.0
Key Evidence Sources
- Cintineo et al. 2022 - Effects of caffeine, methylliberine, and theacrine on vigilance, marksmanship, and hemodynamic responses in tactical personnel: a double-blind, randomized, placebo-controlled trial, Journal of the International Society of Sports Nutrition. Double-blind, randomized, placebo-controlled trial in tactical personnel measuring acute vigilance, marksmanship, and cardiovascular responses to methylliberine, caffeine, and theacrine.
- Murbach et al. 2019 - A Toxicological Evaluation of Methylliberine (Dynamine), Journal of Toxicology. Toxicology battery including genotoxicity tests and a 90-day rat study that found no mutagenic activity but noted body-weight and sexual-organ effects in males at the highest dose.
- Va Dusseldorp et al. 2020 - Safety of Short-Term Supplementation with Methylliberine (Dynamine) Alone and in Combination with TeaCrine in Young Adults, Nutrients. Four-week study in young adults concluding that methylliberine alone or combined with theacrine at commercial doses did not negatively affect markers of health.
- Wikidata - Methylliberine (Q108603652). Structured reference entity for methylliberine used to confirm chemical identity and cross-database identifiers.
- FDA - Dietary Supplements overview. FDA resource explaining how dietary supplements like methylliberine products are regulated in the United States.
- PubChem - Methylliberine compound record. Chemical database providing structure, identifiers, and physical-property data for methylliberine.
- World Anti-Doping Agency - Prohibited List. Official anti-doping reference that tested athletes should check before using stimulant supplements.
- NIH Office of Dietary Supplements. Government resource on dietary supplement ingredients, safety, and evidence standards.
What does the evidence say about Dynamine (Methylliberine)?
Evidence on this intervention is summarized across three complementary streams: contemporary clinical research, pre-RCT-era pharmacology and observational use, and the traditional medical systems that documented it first. Convergence across streams signals higher confidence; divergence is surfaced honestly.
Modern Clinical Research
Confidence: Low
Citations: Cintineo 2022, VanDusseldorp 2020, Murbach 2019
Pre-RCT-Era Pharmacology and Use
Citations: Cintineo 2022, VanDusseldorp 2020
Traditional Medicine Systems
Citations: Cintineo 2022
What to Track If You Try This
These are the data points that matter most while running a 30-day Experiment with this intervention.
How to read this section
- Pre
- Test or score before starting the protocol. Anchors a baseline.
- During
- Track while running the protocol so you can see if anything is changing.
- Post
- Re-test after a full cycle to confirm the change held.
- Up
- The marker should rise. For most positive outcomes, that is a good sign.
- Down
- The marker should fall. For most positive outcomes, that is a good sign.
- Stable
- The marker should hold steady. Big swings in either direction are a yellow flag.
- Watch
- Direction depends on dose, timing, and your baseline. Pay close attention to the trend.
- N/A
- No expected direction. The entry is there to anchor a baseline reading.
- Primary
- The Pulse dimension most likely to shift. Track this first.
- Secondary
- Also relevant, but a smaller or less consistent shift. Track if Primary is unclear.
Bloodwork to Order
Open These Markers In Your Dashboard
- Blood Pressure Baseline (pre-protocol)
- Resting Heart Rate During | Expected Watch
- Sleep Duration During | Expected Down
Pulse Dimensions to Watch
- Energy During | Expected Up | Primary
- Drive During | Expected Up | Primary
- Sleep During | Expected Watch | Secondary
Subjective Signals (Daily Voice Card)
- Stimulant Smoothness Scale 1-5 | During | Expected Up
- Jitters Scale 1-5 | During | Expected Watch
Red Flags: Stop and Consult
- Palpitations, chest pain, or panic
- High-dose caffeine co-use
Other interventions for Energy
See all ratings →📊 How BioHarmony scoring works
BioHarmony translates a weighted expected-value calculation into a reader-facing 0–10 score. Tier bands: Skip 0–2.9, Caution 3.0–4.4, Neutral 4.5–5.7, Worth Trying 5.8–6.9, Strong Recommend 7.0–8.7, Top-tier 8.8–10.0.
Harm-type downsides (safety risk, side effects, reversibility, dependency) carry a 1.4× precautionary multiplier. Harm weighs more than benefit. Opportunity-type downsides (financial cost, time/effort, opportunity cost) are subtracted at face value.
Use case subratings are independent assessments of how well the intervention addresses specific health goals. They are not components of the overall score. Each subrating reflects the scorer's judgment based on use-case-specific evidence, safety, and effect sizes.
Every dimension is evaluated on a 1–5 scale, and the baseline (1) is subtracted before weighting. A perfect intervention with zero downsides contributes zero penalty rather than a residual floor, so top-tier scores are actually reachable.
EV = Upside − Downside
EV = 1.540 − 0.890 = 0.650
Formula v2.0 maps EV = 0 to score 5.0. Above neutral, EV = +4.00 reaches 10.0; below neutral, EV = −5.36 reaches 0.0. Both sides use the full 5-point half-scale.
Score = 5 + (0.650 / 4.00) × 5 = 5.8 / 10
