Non-peptide
TMG
Also known as
Betaine · Trimethylglycine · Betaine anhydrous · TMG betaine · glycine betaine · betaine TMG (not betaine HCl)
Community talk. May contain inaccuracies. Not medical advice. Not a protocol. Not for human or animal use.
What it is
| Identity | Trimethylglycine, or betaine anhydrous, an oral supplement discussed for methylation, homocysteine, NAD stacks and gym performance. |
|---|---|
| Methyl donor | It supplies a small chemical group used to convert homocysteine to methionine. It differs from betaine HCl, ordinary glycine and SAM-e. |
Notes
TMG is trimethylglycine, also called betaine anhydrous: an oral supplement discussed for methylation, homocysteine, NAD stacks and gym performance. Accounts range from clearer thinking and easier social interaction to no noticeable benefit, anxiety, sedation or poor sleep. It differs from betaine HCl, the stomach-acid product.
A methyl donor, in ordinary language. TMG can supply a small chemical group used to convert homocysteine into methionine. It is made in the body and occurs in foods. That explains the methylation interest; it does not establish that every tired person lacks TMG. NCATS Inxight Drugs: betaine identity and methyl-donor description (Official context · Accessed 2026-09-30)
Three conversations share one name. NAD users discuss TMG as a companion to NMN or NR, gym users discuss betaine for performance, and methylation forums discuss mood and blood tests. These goals do not imply the same amount or response. TMG is neither a peptide nor ordinary glycine or SAM-e. NMN, TMG and methylated B vitamins: stack and disagreement (Community discussion · Accessed 2026-09-30) · TMG experiences (Community discussion · Accessed 2026-09-30)
Powder and capsules are swallowed. The preserved discussion describes oral powder or capsules, with moisture-related clumping in powder tubs. Betaine HCl is a different form associated with digestion; neither the name betaine nor a digestive-use story establishes an interchangeable TMG product.
Source context — NCATS Inxight Drugs: betaine identity and methyl-donor description: Official substance database description is supporting chemical/medical context, not proof of general supplement efficacy; broad beneficial-health phrasing is not adopted.
Source context — NMN, TMG and methylated B vitamins: stack and disagreement: Alivebyscience handle and customer-oriented discussion suggest commercial association; not an independent clinical source. Public-figure claims secondhand, not inspected original video. No outcome or frequency for the listed stack.
Source context — TMG experiences: Unverified products, deleted usernames, confounded training, self-selected accounts; one thread is not a prevalence survey. T30000's HCl comparison is personal experience, not pharmacologic equivalence.
What people notice
| Clarity and motivation | One continuing account describes clearer thinking, feeling rested and more motivation after a week, but difficulty sleeping with later use. |
|---|---|
| Social ease, mixed gym results | Some describe easier eye contact. One 500 mg account also reports lower mood and no strength/endurance benefit; another claims immediate strength with bowel and water-retention complaints. |
| Feeling good versus bloodwork | One poster feels good while homocysteine reportedly remains 12–15 after months of TMG and B vitamins, without units or original lab records. The stack's effect on that result is unknown. |
Notes
Clarity and motivation can come with a sleep tradeoff. One executive-dysfunction poster described clearer thinking, feeling rested and more motivation after a week. Their later update described consistent morning benefits but trouble sleeping with later use. This is one continuing account, not evidence that TMG treats executive dysfunction. Anyone try TMG for their executive dysfunction? (Personal report · Accessed 2026-09-30)
Social ease does not guarantee better mood or workouts. In a nootropics thread, people described easier eye contact. One 500 mg account also included lowered mood, increased appetite, smelly urine, water retention and no strength or endurance benefit. Another commenter claimed immediate gym strength, with bowel and water-retention complaints. TMG experiences (Community discussion · Accessed 2026-09-30)
Feeling better and improving a blood test can disagree. A 2025 poster said TMG felt good while homocysteine remained at a reported 12–15 after months of TMG and several B vitamins. Units and independent laboratory records were absent. The stack and symptoms cannot establish TMG's effect on the result. Homocysteine not helped by the usual supplements (Personal report · Accessed 2026-09-30)
Source context — Anyone try TMG for their executive dysfunction?: One evolving uncontrolled account, not multiple users; no measured dose, diagnosis verification or efficacy comparison to medication. Food anecdote by another commenter is not evidence isolating supplement TMG.
Source context — TMG experiences: Unverified products, deleted usernames, confounded training, self-selected accounts; one thread is not a prevalence survey. T30000's HCl comparison is personal experience, not pharmacologic equivalence.
Source context — Homocysteine not helped by the usual supplements: Units, original lab documents, exact OP TMG amount and dosing calendar absent. Genotype/undermethylator labels unverified. Benefit versus lab disagreement preserved without interpreting medical cause.
Doses people talk about
| 500–1000 mg/day NAD-stack talk | A preserved discussion band. A separate poster lists 750 mg TMG with 500 mg NMN and 1000 micrograms methylfolate, without a frequency. A powder pinch has no measured mg equivalent. |
|---|---|
| Individual amount changes | One 500 mg sedation reporter later tries 175 mg. A different person uses 1000 mg once daily, later 1500 mg/day when anxiety returns. These are separate histories, not an escalation plan. |
| 2–2.5 g/day sports talk | These grams come from performance papers repeated in older discussion. They are separate from the lower NAD-stack band and do not establish a community split ratio or medical regimen. |
Notes
500–1,000 mg/day is the preserved NAD-stack band. This is discussion, not a recommended intake. A separate NMN poster listed 750 mg TMG with 500 mg NMN and 1,000 micrograms methylfolate, without an explicit frequency. A powder pinch in the clarity account has no measured milligram equivalent. NMN, TMG and methylated B vitamins: stack and disagreement (Community discussion · Accessed 2026-09-30) · Anyone try TMG for their executive dysfunction? (Personal report · Accessed 2026-09-30)
Lower amounts and higher totals remain individual examples. One 500 mg sedation account later tried 175 mg. Another poster reported 1,000 mg once daily, then 1,500 mg/day when anxiety returned. Neither is an escalation ladder; effects and tolerability differed. TMG makes me feel drunk, happy and sleepy: same-author follow-up (Personal report · Accessed 2026-09-30) · TMG: anxiety relief, recurrence and accumulation speculation (Community discussion · Accessed 2026-09-30)
2–2.5 g/day sports talk comes from performance papers. Older discussion places study-derived sports grams near workouts, mentions larger medical gram amounts, and morning/evening splits of daily totals. It supplies no measured prevalence, specific split ratio or medical regimen.
Source context — NMN, TMG and methylated B vitamins: stack and disagreement: Alivebyscience handle and customer-oriented discussion suggest commercial association; not an independent clinical source. Public-figure claims secondhand, not inspected original video. No outcome or frequency for the listed stack.
Source context — Anyone try TMG for their executive dysfunction?: One evolving uncontrolled account, not multiple users; no measured dose, diagnosis verification or efficacy comparison to medication. Food anecdote by another commenter is not evidence isolating supplement TMG.
Source context — TMG makes me feel drunk, happy and sleepy: same-author follow-up: One account cross-posted to r/NootropicsDepot1ba4m7z and other subs, not independent corroboration. Product, co-exposures and function unverified. Animal-GABA speculation does not establish the human cause.
Source context — TMG: anxiety relief, recurrence and accumulation speculation: Symptoms and response self-reported; tolerance, accumulation and overmethylation not measured. Niacin rescue advice, lithium suggestions and promotional AI-service replies are not accepted or reproduced.
Half-life, onset & duration
| Felt onset | Within an hour for a drunk-like relaxed/sedated feeling on two 500 mg occasions; within a week for the separate clarity account. These do not define a shared benefit onset. |
|---|---|
| Felt duration | One 1 g morning account describes all-day energy with other supplements. No reliable hour count for one dose or withdrawal after missed amounts is established. |
| Half-life | Supplement-dose kinetics are unresolved here. Formal measurements at 50 mg/kg orally were 14.38 hours after one dose and 41.17 hours after repeated 12-hourly exposure for five days; those exposures do not define 500–1000 mg kinetics. |
Notes
Within an hour and within a week answer different questions. The sedation poster described a drunk-like, relaxed feeling within an hour on two 500 mg occasions. The clarity poster described improvement after a week, without an exact first-dose onset. Neither sensation measures absorption or predicts another person's response. TMG makes me feel drunk, happy and sleepy: same-author follow-up (Personal report · Accessed 2026-09-30) · Anyone try TMG for their executive dysfunction? (Personal report · Accessed 2026-09-30)
An all-day report is not a universal clock. One commenter described all-day energy and endurance after 1 g in the morning, while acknowledging other supplements. The clarity poster noticed missed morning amounts. Neither provided a reliable hour count for one dose or established withdrawal when an amount was missed. What to expect from Trimethylglycine? (Community discussion · Accessed 2026-09-30) · Anyone try TMG for their executive dysfunction? (Personal report · Accessed 2026-09-30)
No measured supplement-dose figure in these accounts. An anxiety-thread commenter blamed accumulation and described clearance taking several days or more. They supplied no measurements. That interpretation does not establish an elimination time for their product, explain the poster's relapse, or define a redosing interval. TMG: anxiety relief, recurrence and accumulation speculation (Community discussion · Accessed 2026-09-30)
14.38 hours and 41.17 hours are formal human measurements. The preserved Schwahn study involved 12 healthy men: 50 mg/kg orally once, then every 12 hours for five days. Mean terminal half-life was 14.38 hours after one dose and 41.17 after repeated exposure. These high weight-based amounts do not define a 500–1,000 mg supplement's kinetics or felt duration. NCATS betaine pharmacokinetic entries attributed to Schwahn 2003 (Official context · Accessed 2026-09-30) · Schwahn et al 2003: preserved full-text study review (Official context · Accessed 2026-09-30)
Source context — TMG makes me feel drunk, happy and sleepy: same-author follow-up: One account cross-posted to r/NootropicsDepot1ba4m7z and other subs, not independent corroboration. Product, co-exposures and function unverified. Animal-GABA speculation does not establish the human cause.
Source context — Anyone try TMG for their executive dysfunction?: One evolving uncontrolled account, not multiple users; no measured dose, diagnosis verification or efficacy comparison to medication. Food anecdote by another commenter is not evidence isolating supplement TMG.
Source context — What to expect from Trimethylglycine?: Different authors and habits; no controlled timing, laboratory measurements or verified contents. Do not turn comparisons with DMG or phenibut into efficacy ranking.
Source context — TMG: anxiety relief, recurrence and accumulation speculation: Symptoms and response self-reported; tolerance, accumulation and overmethylation not measured. Niacin rescue advice, lithium suggestions and promotional AI-service replies are not accepted or reproduced.
Source context — NCATS betaine pharmacokinetic entries attributed to Schwahn 2003: Inspected official repository of formal study values, not fresh full-text access to the paper. The frozen profile supplies n=12 and five-day schedule; those details retain their earlier review provenance. Not supplement-dose or felt-effect measurements.
Source context — Schwahn et al 2003: preserved full-text study review: Current PMC open returned reCAPTCHA; PubMed returned one empty line; Europe PMC HTML403 and fullTextXML500. Do not claim a new primary full-text inspection. Small male-only high-exposure study; felt duration not measured.
Cycles people discuss
| Daily stack with occasional skips | One user reports 648 mg TMG plus 500 mg NR daily, occasionally skipping a day or two. A separate suggestion to break every two weeks is opinion. |
|---|---|
| No required calendar established | Daily use alongside NMN/NR and sports blocks lasting weeks appear, without evidence of a required TMG cycle or a validated tolerance reset. |
Notes
Continuous use and informal breaks coexist. A Longecity user reported 648 mg TMG with 500 mg NR daily, occasionally skipping a day or two. A different 2011 poster suggested breaks roughly every two weeks. Those are personal habits and opinion, not validated tolerance resets. TMG with Niagen? (Community discussion · Accessed 2026-09-30) · TMG: informal morning-use and break opinions (Community opinion · Accessed 2026-09-30)
Training blocks do not establish a required cycle. The preserved discussion includes daily use while NMN or NR is used, and sports blocks lasting weeks. No fixed on/off calendar or evidence that TMG must be cycled is established.
Source context — TMG with Niagen?: Uncontrolled stack reports, no measured deficiency or validated ratio; forum shows ads. Only chipw's specific habit enters article; derived prose about this source is under50words.
Source context — TMG: informal morning-use and break opinions: Suggested breaks are untested opinion, not an observed cycle or proven reset. Mood/liver/heart benefits in OP not independently established. Only the break opinion enters article, under40words.
Stacks
| NMN / NR | A frequent discussion pairing, but the claim that TMG is needed as methyl-donor insurance is disputed and partly commercially influenced. |
|---|---|
| Other methylation and gym additions | Methylfolate, methyl-B12, creatine and choline appear in stacks; some find choline redundant. TMG does not replace missing B vitamins. |
Notes
NMN or NR: These are prominent comparison and co-use contexts. A separate list gives 750 mg TMG, 500 mg NMN and 1,000 mcg methylfolate without an explicit frequency or reported outcome. [community]
The NMN insurance story is debated. An NMN thread pairs TMG with methylfolate but includes disagreement about the methyl-donor hypothesis. An apparently seller-associated account repeats Sinclair's insurance rationale. That is secondhand, commercially influenced discussion, not proof that NMN requires TMG or that a matching ratio prevents harm. NMN, TMG and methylated B vitamins: stack and disagreement (Community discussion · Accessed 2026-09-30)
Methylfolate or methyl-B12: Multi-ingredient methylation stacks make subjective and blood-marker changes difficult to attribute to TMG alone. [community]
Creatine: It appears in performance combinations, without an isolated TMG effect or established synergy in these accounts. [community]
+ Choline: Sometimes stacked; redundant-feeling for some. [community]
Bloodwork and stacks serve different questions. Preserved discussion names homocysteine, B12, folate and methylmalonic acid, a B12-status marker. TMG does not replace missing B vitamins; large-dose low-homocysteine warnings lack a verified threshold. Stacks include methyl-B12, methylfolate, creatine and choline, the last sometimes described as redundant. Multiple ingredients complicate attribution.
Source context — NMN, TMG and methylated B vitamins: stack and disagreement: Alivebyscience handle and customer-oriented discussion suggest commercial association; not an independent clinical source. Public-figure claims secondhand, not inspected original video. No outcome or frequency for the listed stack.
Watch for
| Sedation and impairment | One 500 mg user felt too impaired to drive. Feeling normal at 175 mg later does not establish a safe threshold. |
|---|---|
| Anxiety, fog and sleep | Sleep reports conflict: some find 200–400 mg at night helpful, while others report anxiety, morning fog or poorer sleep at 500 mg. Overmethylation labels in replies are not a diagnosis. |
| Stomach, odor and water retention | Bowel changes, water retention and smelly urine appear even in 500–1000 mg discussion. Older higher-gram notes mention stomach symptoms and fishy body odor, without a dependable threshold. |
Notes
Relaxation can include unwanted impairment. The 500 mg sedation poster felt happy but considered themselves unfit to drive; at 175 mg they later felt normal and were unsure of benefit. That does not establish a safe threshold. Anxiety-thread replies calling symptoms overmethylation do not supply a diagnosis or a verified remedy. TMG makes me feel drunk, happy and sleepy: same-author follow-up (Personal report · Accessed 2026-09-30) · TMG: anxiety relief, recurrence and accumulation speculation (Community discussion · Accessed 2026-09-30)
Sleep can improve, worsen or stay unchanged. One commenter called 200–400 mg at night helpful for sleep; another described anxiety or next-morning fog after 500 mg. A separate repeated 500 mg bedtime account described poorer perceived and Oura-recorded sleep. These reports do not identify a dependable morning or bedtime rule. What to expect from Trimethylglycine? (Community discussion · Accessed 2026-09-30) · Repeated bedtime TMG appears to worsen sleep (Personal report · Accessed 2026-09-30)
Stomach and odor complaints are not confined to sports grams. Older notes link larger gram amounts with stomach symptoms and fishy body odor. The opened 500–1,000 mg thread also describes bowel changes, water retention and smelly urine. Different symptoms and products should not be merged into a known dose threshold or frequency. TMG experiences (Community discussion · Accessed 2026-09-30)
Source context — TMG makes me feel drunk, happy and sleepy: same-author follow-up: One account cross-posted to r/NootropicsDepot1ba4m7z and other subs, not independent corroboration. Product, co-exposures and function unverified. Animal-GABA speculation does not establish the human cause.
Source context — TMG: anxiety relief, recurrence and accumulation speculation: Symptoms and response self-reported; tolerance, accumulation and overmethylation not measured. Niacin rescue advice, lithium suggestions and promotional AI-service replies are not accepted or reproduced.
Source context — What to expect from Trimethylglycine?: Different authors and habits; no controlled timing, laboratory measurements or verified contents. Do not turn comparisons with DMG or phenibut into efficacy ranking.
Source context — Repeated bedtime TMG appears to worsen sleep: Unblinded self-experiment and wearable impression, no clinical sleep measurement or rate estimate. Liver-clock explanation is speculative and not adopted; alternative sleep-compound suggestions omitted.
Source context — TMG experiences: Unverified products, deleted usernames, confounded training, self-selected accounts; one thread is not a prevalence survey. T30000's HCl comparison is personal experience, not pharmacologic equivalence.
Full notes
TMG is trimethylglycine, also called betaine anhydrous: an oral supplement discussed for methylation, homocysteine, NAD stacks and gym performance. Accounts range from clearer thinking and easier social interaction to no noticeable benefit, anxiety, sedation or poor sleep. It differs from betaine HCl, the stomach-acid product.
What TMG is and why people discuss it
- A methyl donor, in ordinary language. TMG can supply a small chemical group used to convert homocysteine into methionine. It is made in the body and occurs in foods. That explains the methylation interest; it does not establish that every tired person lacks TMG. Official context
- Three conversations share one name. NAD users discuss TMG as a companion to NMN or NR, gym users discuss betaine for performance, and methylation forums discuss mood and blood tests. These goals do not imply the same amount or response. TMG is neither a peptide nor ordinary glycine or SAM-e. Community Reddit r/NMN Reddit r/Nootropics
- Powder and capsules are swallowed. The preserved discussion describes oral powder or capsules, with moisture-related clumping in powder tubs. Betaine HCl is a different form associated with digestion; neither the name betaine nor a digestive-use story establishes an interchangeable TMG product. Community
Benefits people seek and describe
- Clarity and motivation can come with a sleep tradeoff. One executive-dysfunction poster described clearer thinking, feeling rested and more motivation after a week. Their later update described consistent morning benefits but trouble sleeping with later use. This is one continuing account, not evidence that TMG treats executive dysfunction. Personal report
- Social ease does not guarantee better mood or workouts. In a nootropics thread, people described easier eye contact. One 500 mg account also included lowered mood, increased appetite, smelly urine, water retention and no strength or endurance benefit. Another commenter claimed immediate gym strength, with bowel and water-retention complaints. Reddit r/Nootropics
- Feeling better and improving a blood test can disagree. A 2025 poster said TMG felt good while homocysteine remained at a reported 12–15 after months of TMG and several B vitamins. Units and independent laboratory records were absent. The stack and symptoms cannot establish TMG's effect on the result. Personal report
Doses people discuss
- 500–1,000 mg/day is the preserved NAD-stack band. This is discussion, not a recommended intake. A separate NMN poster listed 750 mg TMG with 500 mg NMN and 1,000 micrograms methylfolate, without an explicit frequency. A powder pinch in the clarity account has no measured milligram equivalent. Community Reddit r/NMN Personal report
- Lower amounts and higher totals remain individual examples. One 500 mg sedation account later tried 175 mg. Another poster reported 1,000 mg once daily, then 1,500 mg/day when anxiety returned. Neither is an escalation ladder; effects and tolerability differed. Personal report Reddit r/Supplements
- 2–2.5 g/day sports talk comes from performance papers. Older discussion places study-derived sports grams near workouts, mentions larger medical gram amounts, and morning/evening splits of daily totals. It supplies no measured prevalence, specific split ratio or medical regimen. Community
Half-life: what community claims can tell us
- No measured supplement-dose figure in these accounts. An anxiety-thread commenter blamed accumulation and described clearance taking several days or more. They supplied no measurements. That interpretation does not establish an elimination time for their product, explain the poster's relapse, or define a redosing interval. Reddit r/Supplements
When people notice a change
- Within an hour and within a week answer different questions. The sedation poster described a drunk-like, relaxed feeling within an hour on two 500 mg occasions. The clarity poster described improvement after a week, without an exact first-dose onset. Neither sensation measures absorption or predicts another person's response. Personal report Personal report
How long a noticeable effect lasts
- An all-day report is not a universal clock. One commenter described all-day energy and endurance after 1 g in the morning, while acknowledging other supplements. The clarity poster noticed missed morning amounts. Neither provided a reliable hour count for one dose or established withdrawal when an amount was missed. Reddit r/Nootropics Personal report
Daily use, courses and breaks
- Continuous use and informal breaks coexist. A Longecity user reported 648 mg TMG with 500 mg NR daily, occasionally skipping a day or two. A different 2011 poster suggested breaks roughly every two weeks. Those are personal habits and opinion, not validated tolerance resets. Longecity NAD+ forum Longecity Nootropic Stacks
- Training blocks do not establish a required cycle. The preserved discussion includes daily use while NMN or NR is used, and sports blocks lasting weeks. No fixed on/off calendar or evidence that TMG must be cycled is established. Community
Effects and limits worth understanding
- Sleep can improve, worsen or stay unchanged. One commenter called 200–400 mg at night helpful for sleep; another described anxiety or next-morning fog after 500 mg. A separate repeated 500 mg bedtime account described poorer perceived and Oura-recorded sleep. These reports do not identify a dependable morning or bedtime rule. Reddit r/Nootropics Personal report
- Relaxation can include unwanted impairment. The 500 mg sedation poster felt happy but considered themselves unfit to drive; at 175 mg they later felt normal and were unsure of benefit. That does not establish a safe threshold. Anxiety-thread replies calling symptoms overmethylation do not supply a diagnosis or a verified remedy. Personal report Reddit r/Supplements
- Stomach and odor complaints are not confined to sports grams. Older notes link larger gram amounts with stomach symptoms and fishy body odor. The opened 500–1,000 mg thread also describes bowel changes, water retention and smelly urine. Different symptoms and products should not be merged into a known dose threshold or frequency. Community Reddit r/Nootropics
Study context behind the circulating numbers
- 14.38 hours and 41.17 hours are formal human measurements. The preserved Schwahn study involved 12 healthy men: 50 mg/kg orally once, then every 12 hours for five days. Mean terminal half-life was 14.38 hours after one dose and 41.17 after repeated exposure. These high weight-based amounts do not define a 500–1,000 mg supplement's kinetics or felt duration. Official context Official context
- Exercise-mimetic headlines keep their animal origin. The preserved discussion describes a 2025 mouse paper involving betaine, exercise and TBK1, with 1% betaine drinking water. That remains animal-context lore, not a human dose conversion, exercise replacement or demonstrated anti-aging outcome. Community
What community discussion adds
- The NMN insurance story is debated. An NMN thread pairs TMG with methylfolate but includes disagreement about the methyl-donor hypothesis. An apparently seller-associated account repeats Sinclair's insurance rationale. That is secondhand, commercially influenced discussion, not proof that NMN requires TMG or that a matching ratio prevents harm. Reddit r/NMN Community
- An initial benefit need not remain steady. The 2025 anxiety poster described benefit beginning the previous year, later relapse and temporary improvement after increasing the daily total. They questioned tolerance and homocysteine without demonstrating either. The experience supports preserving the full timeline, not assuming permanent relief or recommending more. Reddit r/Supplements
- Bloodwork and stacks serve different questions. Preserved discussion names homocysteine, B12, folate and methylmalonic acid, a B12-status marker. TMG does not replace missing B vitamins; large-dose low-homocysteine warnings lack a verified threshold. Stacks include methyl-B12, methylfolate, creatine and choline, the last sometimes described as redundant. Multiple ingredients complicate attribution. Community Community
- Pump, heat and liver talk are separate from proven outcomes. Original discussion includes pump or heat sensations, liver-health hopes and GLP-1 energy-stack mentions. These do not demonstrate liver treatment, weight loss or reversal of aging. The preserved no-obvious-effect replies also matter alongside enthusiastic accounts. Community Community