MOTS-c Interactions: Alcohol, Caffeine, Food and Other Compounds in the Literature

Questions about combining MOTS-c with everyday substances — a drink, a coffee, a meal, a fasting window, or another supplement — arrive far more often than the literature can answer. This page maps the published record onto those questions. Where a study examined something directly, it is cited in the same sentence. Where nothing has been examined, that is stated plainly, and the mechanistic reasoning researchers use is labelled as reasoning rather than evidence.

This page is for educational purposes only and is not medical advice; consult a licensed physician about any health decision, medication or supplement. Nothing here describes a protocol, a combination strategy or a timing schedule.

What MOTS-c Is, in the Literature's Own Terms

MOTS-c is a peptide encoded within mitochondrial DNA rather than the nuclear genome. A 2019 review in BioEssays described MOTS-c as a mitochondrial-encoded regulator of the nucleus, characterising it as a peptide that translocates to the nuclear compartment and influences nuclear gene expression under metabolic stress (PMID 31378979). That framing matters for interaction questions: a molecule that responds to cellular energy state is, in principle, sensitive to anything that alters energy state — which is exactly why alcohol, caffeine, feeding and fasting get asked about. Principle, however, is not measurement.

The mechanistic work that followed has largely been in cell and animal models. A 2025 Redox Biology study reported that MOTS-c attenuated lung ischemia-reperfusion injury through MYH9-dependent nuclear translocation and transcriptional activation of antioxidant genes (PMID 40403491). A 2025 report in Free Radical Biology & Medicine described MOTS-c attenuating mitochondrial dysfunction, pyroptosis and cartilage degradation in an osteoarthritis model via an Nrf2-dependent mechanism (PMID 41043625). These are disease-model findings, not interaction studies.

MOTS-c and Alcohol: No Direct Study Exists

The verified literature contains no study that administered MOTS-c alongside ethanol in humans or animals. There is no published trial measuring how alcohol intake changes MOTS-c concentrations, how MOTS-c alters alcohol metabolism, or how the two behave together in liver tissue.

Mechanistic reasoning only — not evidence of an interaction: researchers interested in this question point to hepatic and mitochondrial biology. A 2025 report in Scientific Reports described MOTS-c as mimicking exercise to counter diabetic liver fibrosis by targeting the Keap1-Nrf2-Smad2/3 axis (PMID 40425777), and a 2024 Gut paper reported a role for MOTS-c in mitochondrial remodelling contributing to an antiviral effect during hepatitis B virus infection (PMID 37788894). Both place MOTS-c biology in the liver, which is why the question is raised — but neither study involved alcohol, and neither can be read as describing what happens when ethanol is present.

MOTS-c and Caffeine: Not Studied Together

No verified study examined MOTS-c with caffeine, coffee or other stimulants. There is no published measurement of caffeine's effect on circulating MOTS-c, nor of MOTS-c modifying caffeine's actions.

Mechanistic reasoning only: the overlap people draw is thermogenic and adrenergic. A 2023 study in Biologia Futura examined intracerebroventricular MOTS-c infusion and its effects on thyroid hormones and uncoupling proteins (PMID 37067760), which is the closest the literature comes to touching energy-expenditure machinery that stimulants also engage. That study did not involve caffeine and does not support any statement about combined effects. Researchers treat the overlap as a hypothesis-generating observation, nothing further.

Food, Feeding State and Fasting

No verified study in this set tested MOTS-c administration in fed versus fasted states, or compared it against a specific diet. Nutrient-sensing is discussed in the reviews, but as biology rather than as an administration variable.

The 2019 BioEssays review framed MOTS-c as responsive to metabolic stress and acting on nuclear transcription in that context (PMID 31378979). Separately, a 2021 paper in Aging reported a pro-diabetogenic mitochondrial DNA polymorphism within the MOTS-c coding sequence, linking genetic variation in the peptide to diabetes risk (PMID 33468709). That work connects MOTS-c to glucose metabolism at the population-genetics level; it did not test meals, macronutrients or fasting windows.

What that means for the question as asked

• No study compared MOTS-c effects with food versus without food.
• No study reported bioavailability differences by feeding state.
• Links between MOTS-c and glucose handling come from genetic association work (PMID 33468709), not from dietary intervention trials.

Exercise: The Only Well-Documented Co-Occurrence

Exercise is the one variable the literature genuinely examined alongside MOTS-c. A 2021 review in Biochimica et Biophysica Acta — General Subjects addressed mitochondrial-derived peptides and exercise as a topic in its own right (PMID 34520826). A 2023 study in Life Sciences reported that MOTS-c and aerobic exercise induced cardiac physiological adaptation via NRG1/ErbB4/CEBPβ modification in rats (PMID 36584915) — a design in which peptide and exercise were studied in the same experimental frame rather than separately.

The exercise-mimetic framing recurs elsewhere: the 2025 Scientific Reports work described MOTS-c mimicking exercise against diabetic liver fibrosis in its model (PMID 40425777). Readers should note the distinction researchers themselves draw — "mimics exercise" describes overlapping molecular signatures in an animal model, not an equivalence claim about training outcomes.

Other Compounds Commonly Asked About

The verified literature contains no co-administration studies pairing MOTS-c with metformin, berberine, NAD+ precursors, creatine, other peptides, anabolic agents, or any prescription medication. That absence is complete rather than partial: there are no published pharmacokinetic interaction data, no combination-arm trials and no human drug-interaction assessments in this citation set.

Adverse Events and Contradictory Findings: What Studies Report

Interaction questions often stand in for a broader safety question, so it is worth noting that the MOTS-c literature is not uniformly favourable. A 2018 paper in Rejuvenation Research reported that mitochondrial-derived peptides exacerbated senescence in its experimental system (PMID 30058454) — a direction opposite to the protective effects described in the injury models above. Researchers treat such divergence as context-dependence: cell type, model and stressor appear to shape the outcome.

Genetic work adds another layer. The 2021 Aging study described a MOTS-c polymorphism associated with a pro-diabetogenic phenotype (PMID 33468709), indicating that variation in this peptide sequence is not biologically neutral. Neither of these reports concerned substance interactions, and neither describes adverse events from co-administration — because no such co-administration studies exist in the verified set.

Circulating MOTS-c as a Measured Variable

Some interaction questions ask whether alcohol, caffeine or diet would shift MOTS-c levels. The literature does measure circulating MOTS-c in clinical contexts: a 2025 paper in Frontiers in Medicine examined circulating mitochondrial biomarkers in acute coronary syndrome (PMID 40443515), establishing that these peptides are detectable and variable in human blood. That capability exists; it has simply not been applied to alcohol, caffeine or feeding-state comparisons in the verified literature.

Neurological and Central Effects in Context

Because several asked-about substances act centrally, the central-nervous-system MOTS-c work is worth noting as background rather than as interaction evidence. A 2024 study in Drug Design, Development and Therapy reported neuroprotective mechanisms of MOTS-c in traumatic brain injury mice using integrated transcriptomic and metabolomic analyses (PMID 39050800), and the intracerebroventricular infusion study measured thyroid hormone and uncoupling protein responses in animals (PMID 37067760). Both used direct central administration in animal models. Neither involved alcohol, caffeine or any other co-administered substance.

How to Read the Gap

The honest summary is that MOTS-c interaction claims circulating outside the literature are not derived from interaction studies, because those studies have not been published. What exists is a body of preclinical mechanism work — antioxidant gene activation (PMID 40403491), Nrf2-dependent effects in cartilage (PMID 41043625), exercise co-occurrence in rats (PMID 36584915) — plus at least one report of the opposite direction of effect (PMID 30058454). Extrapolating from mechanism to a real-world combination is reasoning, and researchers who do it label it as such. This page does the same.

For the broader picture of what MOTS-c is and what the research base covers, see the MOTS-c overview in the Learn section.

References

• Novel function of MOTS-c in mitochondrial remodelling contributes to its antiviral role during HBV infection (Gut, 2024)
• MOTS-c: A Mitochondrial-Encoded Regulator of the Nucleus (BioEssays, 2019)
• MOTS-c attenuates lung ischemia-reperfusion injury via MYH9-Dependent nuclear translocation and transcriptional activation of antioxidant genes (Redox Biology, 2025)
• MOTS-c attenuates mitochondrial dysfunction induces pyroptosis and cartilage degradation in osteoarthritis via an Nrf2-Dependent Mechanism (Free Radical Biology & Medicine, 2025)
• Effects of intracerebroventricular MOTS-c infusion on thyroid hormones and uncoupling proteins (Biologia Futura, 2023)
• Circulating mitochondrial biomarkers in acute coronary syndrome (Frontiers in Medicine, 2025)
• Mitochondrial-Derived Peptides Exacerbate Senescence (Rejuvenation Research, 2018)
• MOTS-c mimics exercise to combat diabetic liver fibrosis by targeting Keap1-Nrf2-Smad2/3 (Scientific Reports, 2025)
• Mitochondrial-derived peptides and exercise (Biochimica et Biophysica Acta. General Subjects, 2021)
• Neuroprotective Mechanism of MOTS-c in TBI Mice: Insights from Integrated Transcriptomic and Metabolomic Analyses (Drug Design, Development and Therapy, 2024)
• A pro-diabetogenic mtDNA polymorphism in the mitochondrial-derived peptide, MOTS-c (Aging, 2021)
• MOTS-c and aerobic exercise induce cardiac physiological adaptation via NRG1/ErbB4/CEBPβ modification in rats (Life Sciences, 2023)