Non-peptide

Meldonium

Also known as

Mildronate · MET-88 · meldonium dihydrate

Community talk. May contain inaccuracies. Not medical advice. Not a protocol. Not for human or animal use.

What it is

Mildronate / MET-88	A metabolic medicine discussed for fatigue, endurance and recovery. Oral capsules dominate these accounts; IV research is a separate route.
Fuel-use interest	Biohackers discuss relying less on fat-derived fuel and more on glucose. That explanation does not establish better healthy-person performance or Long COVID recovery.

Notes

Mildronate is a medicine, not a peptide. Meldonium, also called MET-88, is discussed for fatigue, endurance and recovery. Mildronate is a brand; meldonium dihydrate is its active form. Oral capsules dominate these accounts. Intravenous research is a separate route, not a local repair injection. USADA – Substance Profile: Meldonium (Official context · Accessed 2026-09-30) · HPRA – Mildronate 500 mg hard capsules patient leaflet (Official context · Accessed 2026-09-30) · Forsdahl et al. – Urinary excretion studies after multidose parenteral application (Official context · Accessed 2026-09-30)

Changing fuel use is the appeal. Biohackers describe reducing reliance on fat-derived fuel and favoring glucose. That is why carnitine and carbohydrate questions recur. A metabolic explanation does not establish better performance in a healthy person or recovery from Long COVID. Mildronate/Meldonium Experiences? (Community discussion · Accessed 2026-09-30) · New paper on IgG and mitochondrial damage in ME/CFS and Long COVID (Community discussion · Accessed 2026-09-30)

Source context — USADA – Substance Profile: Meldonium: Anti-doping educational profile; broad efficacy statements not adopted as established healthy-user benefits.

Source context — HPRA – Mildronate 500 mg hard capsules patient leaflet: Irish authorized product information; not evidence of healthy-athlete or Long COVID benefit. Label strength cannot verify anonymous products.

Source context — Forsdahl et al. – Urinary excretion studies after multidose parenteral application: Abstract only; phase estimates model urinary excretion after IV dosing and cannot define one oral half-life.

Source context — Mildronate/Meldonium Experiences?: Unverified products, extensive co-use and unsupported mechanism/safety claims; repeated Gay-J comments are one account.

Source context — New paper on IgG and mitochondrial damage in ME/CFS and Long COVID: Half-life source not identified by commenter; liver claims disputed. Same crash account linked in Liface post is not independent corroboration. Amount/route absent.

What people notice

Easier activity or little change	A prescribed user recalled easier running; an on/off user described modest energy and clarity. A heavily stacked gym user felt barely more than placebo, without stimulation.
Endurance versus power	One lifter described easier light-weight repetitions but weaker near-max lifts and occasional weakness. Another noticed no faster running; stamina and strength can move differently.
Brief clarity followed by a crash	One Long COVID commenter reported two hours of less brain fog followed by three days of severe exhaustion, coldness and weakness. These phases belong to the same account.

Notes

Easier activity, sometimes without a buzz. A user prescribed it for reduced blood supply to the heart reported easier running and strenuous activity. A separate on/off user noticed modest energy and clarity; a heavily stacked gym user felt no stimulation and barely more than placebo. Has Anyone Tried Meldonium/Mildronate? (Personal report · Accessed 2026-09-30) · Mildronate/Meldonium Experiences? (Community discussion · Accessed 2026-09-30)

Endurance can come with a strength tradeoff. An AnabolicMinds lifter reported better light-weight repetitions, weaker near-max lifts and occasional weakness over three days. Reported totals were 500 mg on day one, then 500 mg preworkout plus 250 mg later: 750 mg/day. Another commenter noticed no faster running. Meldonium experiences? (Personal report · Accessed 2026-09-30)

Two hours of clarity preceded a three-day crash. One Long COVID commenter described less brain fog briefly, then severe exhaustion, coldness and weakness for three days. Amount and route were unstated. The favorable and adverse phases belong to one person's account. New paper on IgG and mitochondrial damage in ME/CFS and Long COVID (Community discussion · Accessed 2026-09-30)

Source context — Has Anyone Tried Meldonium/Mildronate?: Retrospective wording says 'I believe'; no medical records or onset. Other commenter discusses trimetazidine, not meldonium.

Source context — Mildronate/Meldonium Experiences?: Unverified products, extensive co-use and unsupported mechanism/safety claims; repeated Gay-J comments are one account.

Source context — Meldonium experiences?: Anonymous uncontrolled training accounts. Oral use implied by preworkout consumption; exact formulation unstated. Quote of #1 in #2 is not independent evidence.

Doses people talk about

Recalled prescribed use	500 mg orally morning plus 500 mg afternoon: 1,000 mg/day, recalled during about a year for ischemia. This approximate medical history is not a general performance amount.
Separate community amounts	Reports range from one 250 mg morning dose with adverse symptoms to 500 mg–1 g with unclear frequency. A heavily stacked user's 500 mg–5 g/day brought little benefit; the extreme amount is not a safe ceiling.
Training account	One lifter reported 500 mg on day one, then 500 mg before training plus 250 mg later: 750 mg/day. The account included reduced near-max strength and weakness.

Notes

Oral: 500 mg morning plus 500 mg afternoon. One prescribed user recalls this schedule: 1,000 mg total per day, during about a year of use for ischemia. The recollection is approximate, and a medical indication does not turn it into a general performance dose. Has Anyone Tried Meldonium/Mildronate? (Personal report · Accessed 2026-09-30)

Other accounts are not a dose ladder. Reports include one 250 mg morning dose with adverse symptoms, an on/off user's 500 mg–1 g with unclear frequency, and a stacked user's 500 mg–5 g/day with little benefit. Product strengths were not independently checked; 5 g means 5,000 mg, an extreme report rather than an endorsed ceiling. Road to 100 Long COVID Interventions: #42 – Meldonium (Personal report · Accessed 2026-09-30) · Mildronate/Meldonium Experiences? (Community discussion · Accessed 2026-09-30)

Source context — Has Anyone Tried Meldonium/Mildronate?: Retrospective wording says 'I believe'; no medical records or onset. Other commenter discusses trimetazidine, not meldonium.

Source context — Road to 100 Long COVID Interventions: #42 – Meldonium: Severe illness, uncontrolled symptoms and later lorazepam prevent firm attribution; linked ExtensionGur9013 story is counted only in its original thread.

Source context — Mildronate/Meldonium Experiences?: Unverified products, extensive co-use and unsupported mechanism/safety claims; repeated Gay-J comments are one account.

Half-life, onset & duration

Felt onset	Favorable repeated-use reports describe several days or 1–2 weeks. Warmth within an hour after 250 mg was an adverse experience without extra energy.
Felt duration	No dependable one-dose benefit window. Two hours of clarity then a three-day crash is one report; another after-stop benefit claim supplied no duration.
Half-life	No single dependable oral value here. The over-100-hour forum claim is unverified; formal studies show prolonged, multi-phase elimination, which does not mean prolonged useful effects.

Notes

Several days to 1–2 weeks in favorable accounts. The on/off Nootropics user describes a modest change after several days. A runner reported better endurance and recovery after 1–2 weeks; no meldonium amount was given. These are repeated-use timelines, not a predictable first-dose onset. Mildronate/Meldonium Experiences? (Community discussion · Accessed 2026-09-30) · Endurance LOG (Long distance runner) – Sarms, peptides etc... (Personal report · Accessed 2026-09-30)

Warmth within one hour was an adverse experience. The bedbound Long COVID author felt warm after 250 mg but gained no energy. An early physical sensation is not evidence that the hoped-for benefit has begun. Road to 100 Long COVID Interventions: #42 – Meldonium (Personal report · Accessed 2026-09-30)

No dependable one-dose benefit window. A Longecity user said benefits remained after stopping but gave no duration. The 250 mg Long COVID account worsened around 24 hours and improved after lorazepam; that does not show when meldonium wore off. Meldonium for cognitive enhancement? (Personal report · Accessed 2026-09-30) · Road to 100 Long COVID Interventions: #42 – Meldonium (Personal report · Accessed 2026-09-30)

Over 100 hours is an unverified forum claim. A Long COVID commenter asserts a second elimination half-life above 100 hours without identifying its measurement source. Half-life means the time for an amount to fall by half; different elimination phases can have different values. This number does not predict symptom duration. New paper on IgG and mitochondrial damage in ME/CFS and Long COVID (Community discussion · Accessed 2026-09-30)

Long persistence does not mean lasting benefit. The Nootropics author worries about accumulation and prolonged elimination. These are community concerns, not measurements. There is no reliable community-derived single oral half-life or safe waiting interval in these accounts. Mildronate/Meldonium Experiences? (Community discussion · Accessed 2026-09-30)

Oral elimination can continue for months. In 32 healthy volunteers taking 1 or 2 g/day orally for three weeks, blood levels stabilized over several days and elimination continued for months. The abstract supplies no single universal oral half-life and measures disappearance, not subjective benefit. Rabin et al. – Meldonium long-term excretion period and pharmacokinetics (Official context · Accessed 2026-09-30)

IV study: three different elimination phases. Six volunteers received three 250 mg intravenous injections over five days. Urine modeling estimated 1.4-, 9.4- and 655-hour phases, with detection for 94–162 days. These are not interchangeable oral or felt-duration values. Forsdahl et al. – Urinary excretion studies after multidose parenteral application (Official context · Accessed 2026-09-30)

Source context — Mildronate/Meldonium Experiences?: Unverified products, extensive co-use and unsupported mechanism/safety claims; repeated Gay-J comments are one account.

Source context — Endurance LOG (Long distance runner) – Sarms, peptides etc...: Training changed and later Cardarine co-use; surrounding forum promotes vendors/stacks. Illness-shield opinion and other-drug advice not adopted.

Source context — Meldonium for cognitive enhancement?: Amount and route unstated; no time length for residual benefit. Post #11 quotes the same story; not another user. ALCAR claim uncontrolled.

Source context — Rabin et al. – Meldonium long-term excretion period and pharmacokinetics: Abstract via Europe PMC REST inspected; PubMed/Wiley page opens did not expose full text. Elimination study, not benefit duration or performance trial.

Cycles people discuss

Runner's calendar	One runner described 4–5 weeks on and three weeks off before another course. Changing training and later Cardarine complicate the account; the break is not a validated reset.
Other patterns	A twice-daily user stopped after six weeks feeling drained. About a year on/off, a year prescribed, and stopping after one dose also appear; no universal cycle emerges.

Notes

Four to five weeks on, three weeks off. One runner describes this first course and break before a second course. This is an individual calendar, not a validated reset period. Training and later additional compounds complicate interpretation. Endurance LOG (Long distance runner) – Sarms, peptides etc... (Personal report · Accessed 2026-09-30)

tomas123 post #1, Dec 28 2016, lines 64–73: improvement after 1–2 weeks, 4–5-week first course, three-week break, second course; amounts/route unstated. Endurance LOG (Long distance runner) – Sarms, peptides etc... (Personal report · Accessed 2026-09-30)

Six weeks, intermittent use and longer prescribed use differ. The Longecity user took it twice daily for six weeks and stopped when feeling drained. Other records include about a year on/off, about a year prescribed, and one dose followed by stopping. No universal cycle emerges. Meldonium for cognitive enhancement? (Personal report · Accessed 2026-09-30) · Mildronate/Meldonium Experiences? (Community discussion · Accessed 2026-09-30) · Has Anyone Tried Meldonium/Mildronate? (Personal report · Accessed 2026-09-30) · Road to 100 Long COVID Interventions: #42 – Meldonium (Personal report · Accessed 2026-09-30)

Source context — Mildronate/Meldonium Experiences?: Unverified products, extensive co-use and unsupported mechanism/safety claims; repeated Gay-J comments are one account.

Source context — Has Anyone Tried Meldonium/Mildronate?: Retrospective wording says 'I believe'; no medical records or onset. Other commenter discusses trimetazidine, not meldonium.

Stacks

Stimulants and other substances	One user described less jitteriness and more productive focus alongside stimulants. Another found little benefit with several drugs and diets; feeling less strained does not prove heart protection or safe co-use.
Carnitine is debated	One user stopped acetyl-L-carnitine, believing it opposed meldonium. This is a reported change, not an established required supplement combination or diet.

Notes

Stacks change both benefits and risks. The Nootropics author described less jitteriness and more productive focus alongside stimulants and other substances. Another user tried several diets and drugs with little benefit. Feeling less strained does not prove heart protection or safe combinations; training and diet also affect results. Mildronate/Meldonium Experiences? (Community discussion · Accessed 2026-09-30)

Carnitine explanations are debated. The Longecity user stopped acetyl-L-carnitine, believing it opposed meldonium. Nootropics comments speculate about low glucose after hard exercise and fat gain. These are experiences and interpretations, not proof of a necessary diet or supplement pairing. Meldonium for cognitive enhancement? (Personal report · Accessed 2026-09-30) · Mildronate/Meldonium Experiences? (Community discussion · Accessed 2026-09-30)

Source context — Mildronate/Meldonium Experiences?: Unverified products, extensive co-use and unsupported mechanism/safety claims; repeated Gay-J comments are one account.

Watch for

Sleep and fatigue	Reports include fragmented sleep, weakness, a next-day crash and feeling drained after repeated use. Positive endurance stories do not cancel those reactions.
Heart/BP medicines and illness	The leaflet lists fast heart rate, reduced pressure, headache, gut upset and allergy. It flags interactions with some heart/BP medicines, kidney/liver disease, pregnancy and breastfeeding.
Sport and long traces	The saved 2026 WADA record prohibits meldonium in and out of competition, and it is not FDA-approved in the U.S. Elimination can continue for months; a felt-effect window is not anti-doping clearance.

Notes

Sleep disruption and worsening fatigue occur. The single-dose account includes fragmented sleep and a next-day crash. Anonymous reports cannot establish causation or frequency, but favorable endurance stories do not cancel these reactions. Road to 100 Long COVID Interventions: #42 – Meldonium (Personal report · Accessed 2026-09-30)

Heart and blood-pressure symptoms deserve attention. The leaflet lists fast heart rate, reduced blood pressure, headache, digestive upset and allergic reactions. Chest pain, severe allergy, new neurological symptoms or severe blood-pressure/glucose problems require medical care rather than forum interpretation. HPRA – Mildronate 500 mg hard capsules patient leaflet (Official context · Accessed 2026-09-30)

Interactions and pregnancy remain separate concerns. The leaflet warns of stronger effects from some heart/BP medicines, including nitrates, nifedipine and beta blockers, and flags kidney/liver disease. It discourages pregnancy use and breastfeeding. Long-term self-experiment and gray-market product safety remain uncertain. HPRA – Mildronate 500 mg hard capsules patient leaflet (Official context · Accessed 2026-09-30)

Prohibited in and out of competition. WADA's 2026 list names meldonium under metabolic modulators. It is not FDA-approved in the U.S. Neither a forum break calendar nor a felt-effect window establishes anti-doping clearance. WADA 2026 Prohibited List (Official context · Accessed 2026-09-30) · USADA – Substance Profile: Meldonium (Official context · Accessed 2026-09-30)

Source context — Mildronate/Meldonium Experiences?: Unverified products, extensive co-use and unsupported mechanism/safety claims; repeated Gay-J comments are one account.

Source context — Has Anyone Tried Meldonium/Mildronate?: Retrospective wording says 'I believe'; no medical records or onset. Other commenter discusses trimetazidine, not meldonium.

Source context — WADA 2026 Prohibited List: Current 2026 sport rule, not a safety/effectiveness judgment or an individualized detection interval.

Source context — USADA – Substance Profile: Meldonium: Anti-doping educational profile; broad efficacy statements not adopted as established healthy-user benefits.

Full notes

Meldonium (Mildronate) is a metabolic medicine people discuss for stamina, fatigue and recovery. Reports range from easier activity to little benefit, reduced power or a crash. It is prohibited in sport, and lasting bodily traces do not mean lasting useful effects.

What Meldonium is

Mildronate is a medicine, not a peptide. Meldonium, also called MET-88, is discussed for fatigue, endurance and recovery. Mildronate is a brand; meldonium dihydrate is its active form. Oral capsules dominate these accounts. Intravenous research is a separate route, not a local repair injection. Official context Official context Official context
Changing fuel use is the appeal. Biohackers describe reducing reliance on fat-derived fuel and favoring glucose. That is why carnitine and carbohydrate questions recur. A metabolic explanation does not establish better performance in a healthy person or recovery from Long COVID. Reddit r/Nootropics Reddit r/covidlonghaulers

Benefits people seek

Easier activity, sometimes without a buzz. A user prescribed it for reduced blood supply to the heart reported easier running and strenuous activity. A separate on/off user noticed modest energy and clarity; a heavily stacked gym user felt no stimulation and barely more than placebo. Personal report Reddit r/Nootropics
Less fatigue is not the same as more power. Training reports distinguish endurance from strength. Improved stamina can coexist with disappointing performance, and some users notice no benefit. These experiences do not establish which outcome is usual. Personal report Reddit r/Nootropics

Doses people discuss

Oral: 500 mg morning plus 500 mg afternoon. One prescribed user recalls this schedule: 1,000 mg total per day, during about a year of use for ischemia. The recollection is approximate, and a medical indication does not turn it into a general performance dose. Personal report
Other accounts are not a dose ladder. Reports include one 250 mg morning dose with adverse symptoms, an on/off user's 500 mg–1 g with unclear frequency, and a stacked user's 500 mg–5 g/day with little benefit. Product strengths were not independently checked; 5 g means 5,000 mg, an extreme report rather than an endorsed ceiling. Personal report Reddit r/Nootropics
Under-the-tongue use is a separate experiment. The Nootropics author thought sublingual use felt stronger and caused brief flushing, but gave no amount. That cannot establish a swallowed-dose equivalent or route superiority. Reddit r/Nootropics

Half-life discussed in the community

Over 100 hours is an unverified forum claim. A Long COVID commenter asserts a second elimination half-life above 100 hours without identifying its measurement source. Half-life means the time for an amount to fall by half; different elimination phases can have different values. This number does not predict symptom duration. Reddit r/covidlonghaulers
Long persistence does not mean lasting benefit. The Nootropics author worries about accumulation and prolonged elimination. These are community concerns, not measurements. There is no reliable community-derived single oral half-life or safe waiting interval in these accounts. Reddit r/Nootropics

When people first notice something

Several days to 1–2 weeks in favorable accounts. The on/off Nootropics user describes a modest change after several days. A runner reported better endurance and recovery after 1–2 weeks; no meldonium amount was given. These are repeated-use timelines, not a predictable first-dose onset. Reddit r/Nootropics Personal report
Warmth within one hour was an adverse experience. The bedbound Long COVID author felt warm after 250 mg but gained no energy. An early physical sensation is not evidence that the hoped-for benefit has begun. Personal report

How long effects feel noticeable

Two hours of clarity preceded a three-day crash. One Long COVID commenter described less brain fog briefly, then severe exhaustion, coldness and weakness for three days. Amount and route were unstated. The favorable and adverse phases belong to one person's account. Reddit r/covidlonghaulers
No dependable one-dose benefit window. A Longecity user said benefits remained after stopping but gave no duration. The 250 mg Long COVID account worsened around 24 hours and improved after lorazepam; that does not show when meldonium wore off. Personal report Personal report

Courses and breaks people describe

Four to five weeks on, three weeks off. One runner describes this first course and break before a second course. This is an individual calendar, not a validated reset period. Training and later additional compounds complicate interpretation. Personal report
Six weeks, intermittent use and longer prescribed use differ. The Longecity user took it twice daily for six weeks and stopped when feeling drained. Other records include about a year on/off, about a year prescribed, and one dose followed by stopping. No universal cycle emerges. Personal report Reddit r/Nootropics Personal report Personal report

Cautions that matter

Sleep disruption and worsening fatigue occur. The single-dose account includes fragmented sleep and a next-day crash. Anonymous reports cannot establish causation or frequency, but favorable endurance stories do not cancel these reactions. Personal report
Heart and blood-pressure symptoms deserve attention. The leaflet lists fast heart rate, reduced blood pressure, headache, digestive upset and allergic reactions. Chest pain, severe allergy, new neurological symptoms or severe blood-pressure/glucose problems require medical care rather than forum interpretation. Official context Community
Interactions and pregnancy remain separate concerns. The leaflet warns of stronger effects from some heart/BP medicines, including nitrates, nifedipine and beta blockers, and flags kidney/liver disease. It discourages pregnancy use and breastfeeding. Long-term self-experiment and gray-market product safety remain uncertain. Official context Community
Prohibited in and out of competition. WADA's 2026 list names meldonium under metabolic modulators. It is not FDA-approved in the U.S. Neither a forum break calendar nor a felt-effect window establishes anti-doping clearance. Official context Official context

What the experience reports add

Endurance can come with a strength tradeoff. An AnabolicMinds lifter reported better light-weight repetitions, weaker near-max lifts and occasional weakness over three days. Reported totals were 500 mg on day one, then 500 mg preworkout plus 250 mg later: 750 mg/day. Another commenter noticed no faster running. Personal report
Stacks change both benefits and risks. The Nootropics author described less jitteriness and more productive focus alongside stimulants and other substances. Another user tried several diets and drugs with little benefit. Feeling less strained does not prove heart protection or safe combinations; training and diet also affect results. Reddit r/Nootropics Community
Carnitine explanations are debated. The Longecity user stopped acetyl-L-carnitine, believing it opposed meldonium. Nootropics comments speculate about low glucose after hard exercise and fat gain. These are experiences and interpretations, not proof of a necessary diet or supplement pairing. Personal report Reddit r/Nootropics
A crash story is not a whole-community verdict. The Long COVID thread contains nonresponse and vague discomfort as well as its author's adverse experience. That author links the same three-day crash described above; it is not another independent report. Mechanism arguments do not establish who will improve or worsen. Personal report Reddit r/covidlonghaulers

Separately measured medical context

A capsule's labeled milligrams depend on its form. The Irish leaflet specifies 500 mg meldonium dihydrate, equivalent to 401.14 mg meldonium. Its 500–1,000 mg daily and 4–6-week course concern supplementary heart-failure treatment, not an athletic or Long COVID protocol. Official context
Oral elimination can continue for months. In 32 healthy volunteers taking 1 or 2 g/day orally for three weeks, blood levels stabilized over several days and elimination continued for months. The abstract supplies no single universal oral half-life and measures disappearance, not subjective benefit. Official context
IV study: three different elimination phases. Six volunteers received three 250 mg intravenous injections over five days. Urine modeling estimated 1.4-, 9.4- and 655-hour phases, with detection for 94–162 days. These are not interchangeable oral or felt-duration values. Official context