Non-peptide

Methylene Blue

Also known as

MB · methylthioninium chloride · methylthioninium · USP methylene blue · pharmaceutical-grade methylene blue · ProvayBlue (clinical IV brand context) · Proveblue (clinical brand context) · methylene blue USP · MB drops / oral solution (community form) · LMTM / LMTX / TRx0237 / hydromethylthionine (related tau-aggregation derivative — not the same consumer MB) · Rember (older methylthioninium chloride AD program context)

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

What it is

Identity	Methylthioninium chloride, a dye and medicine discussed in small oral amounts for thinking, focus and daytime energy.
Separate medical uses	IV treatment for methemoglobinemia and related dementia formulations differ from consumer oral-drop experiments.

Notes

Methylene Blue is a dye and medicine that biohackers discuss in small oral amounts for clearer thinking, focus and daytime energy. Some describe calmer concentration or less brain fog; others notice little change or unwanted effects. Its hospital use and online nootropic experiments have different purposes and evidence.

A small molecule that can carry electrons. Also called methylthioninium chloride, it changes between oxidized and reduced forms. The mitochondrial shorthand means helping the cell's energy machinery move electrons; that explanation does not establish better energy or slower aging in a person. Rodriguez et al.: Multimodal randomized functional MR imaging of methylene blue in the human brain (Official context · Accessed 2026-09-30)

Hospital treatment is a separate use. PROVAYBLUE is an intravenous medicine for acquired methemoglobinemia, a blood condition impairing oxygen delivery. That indication does not approve oral drops for cognition. Related hydromethylthionine/LMTM dementia formulations also should not be treated as interchangeable consumer MB. DailyMed: PROVAYBLUE methylene blue injection prescribing information (Official context · Accessed 2026-09-30)

Source context — Rodriguez et al.: Multimodal randomized functional MR imaging of methylene blue in the human brain: Single-dose small human experiment; laboratory tasks and imaging do not validate everyday 1–15 mg habits or longevity. Standard PMC web open hit CAPTCHA; urllib alternate report URL returned actual article body. No full systematic review claimed.

Source context — DailyMed: PROVAYBLUE methylene blue injection prescribing information: IV product labeling; cannot quantify safety, effectiveness or kinetics of unverified oral microdose products. No consumer medication-switch interval inferred.

What people notice

Clarity and motivation	Reports include less fog, easier mental calculations and more usable energy. One 15 mg/day author described immediate calm but missed usual stimulant motivation.
No benefit or worse thinking	Other accounts describe no noticeable effect, worse fog or an overstimulated start.
Sleep and color changes	Vivid or stressful dreams, light sensitivity and blue urine are reported; urine color is not a benefit or identity test.

Notes

Less fog and more usable mental energy. CuteDerpster described easier mental calculations, visualization and staying awake through a movie. Other reports emphasize motivation rather than a caffeine buzz. These are personal changes with other life changes or supplements involved, not proof of improved mitochondrial function. CuteDerpster: Experience with Methylene blue (Personal report · Accessed 2026-09-30) · flowradiance: First experience with Methylene Blue — observations and questions (Personal report · Accessed 2026-09-30)

Calm clarity can feel different from stimulation. A 15 mg/day author described immediate calm and clearer thinking, then missed the usual motivating effect of caffeine and prescribed dexamphetamine. Neither the report nor speculative replies establish that MB blocks stimulants. Older accounts also describe a jittery or overstimulated start. awokensoul_: Experiencing Changes with Methylene Blue and Stimulants (Personal report · Accessed 2026-09-30)

No change and worse thinking also occur. The January 2025 discussion includes several years of no noticeable effects, another brief nonresponse, and brain fog caffeine did not relieve. In the dream thread, some enjoyed vivid dreams while another found them disruptive. Strong testimonials cannot supply a success rate. Experiences with Methylene Blue? (Community discussion · Accessed 2026-09-30) · 2 Days in a and weird dreams (Community discussion · Accessed 2026-09-30)

Sleep changes can outlast the daytime impression. The 3 mg first-use account reported stressful dreams that night. Another morning-dose thread describes vivid dreams without daytime mental benefit. A two-month daily-use report is follow-up, not evidence that a single dose lasts two months. flowradiance: First experience with Methylene Blue — observations and questions (Personal report · Accessed 2026-09-30) · 2 Days in a and weird dreams (Community discussion · Accessed 2026-09-30) · CuteDerpster: Experience with Methylene blue (Personal report · Accessed 2026-09-30)

Lower amounts felt steadier to one author. CuteDerpster's 5–8 mg/day fog improvement later came with brighter colors, light sensitivity and headaches. Warm hands were also reported about an hour after ingestion. Symptoms cleared during a break; roughly 1 mg/day was then described as steadier. This preserves the dose-change story without proving a dose-response rule. CuteDerpster: Experience with Methylene blue (Personal report · Accessed 2026-09-30)

Blue urine and staining are not benefit tests. The 15 mg/day author saw blue urine, then normal color; the 3 mg author saw none. Mouth, teeth and household staining annoy users. Food, diluted water, capsules or troches change the experience, but absence of color does not prove underdosing or a fake bottle. awokensoul_: Experiencing Changes with Methylene Blue and Stimulants (Personal report · Accessed 2026-09-30) · flowradiance: First experience with Methylene Blue — observations and questions (Personal report · Accessed 2026-09-30)

Source context — CuteDerpster: Experience with Methylene blue: Anonymous unverified product and dose; other life changes; explanations about vasodilation, MAO and estradiol are author speculation, not verified mechanisms.

Source context — flowradiance: First experience with Methylene Blue — observations and questions: Other supplements and exercise; no objective outcome validation. Follow-up says eight drops equals 4 mL of 1%, internally incompatible with original six drops/3 mg; do not normalize its later amounts.

Source context — awokensoul_: Experiencing Changes with Methylene Blue and Stimulants: Prescribed dexamphetamine and caffeine exposure; no verification of drug mechanism, doctor's suggestion, purity or metabolic explanation.

Source context — Experiences with Methylene Blue?: Small self-selected anonymous sample; some deleted usernames; hidden reply not treated as inspected. Health conditions, supplements and modalities confound positive reports; no consensus inferred.

Source context — 2 Days in a and weird dreams: Unverified dose; original second-day amount contains typo '2md' and is not corrected to a confident mg claim; dream reports do not establish improved sleep or REM physiology.

Doses people talk about

Fixed oral daily amounts	Older charts list 0.5–4 mg and 5–15 mg/day. Separate personal reports include roughly 1 mg daily, 5–8 mg/day, about 15 mg/day and a 3 mg first morning.
Larger weight-based claims	0.5–1 mg/kg once daily appears in preserved guides, alongside different 5-to-20 mg morning step-up charts. These conflicting amounts do not establish an optimum or safe ceiling.
Sublingual and microgram accounts	A separate account reports 5 mg under the tongue twice daily, 10 mg/day total. Older nominal 60 mcg logs use uncertain drop calculations.
Memory-study context	A small human experiment used 280 mg immediate-release oral capsules once, testing an hour later; it did not validate everyday low-dose habits.

Notes

Fixed oral daily amounts: 0.5–4 mg and 5–15 mg in older charts. Opened personal reports include roughly 1 mg once daily after a break, 5–8 mg/day, and about 15 mg/day. A separate first-use account reported 3 mg that morning. These are separate experiences, not a progression or validated effective range. CuteDerpster: Experience with Methylene blue (Personal report · Accessed 2026-09-30) · awokensoul_: Experiencing Changes with Methylene Blue and Stimulants (Personal report · Accessed 2026-09-30) · flowradiance: First experience with Methylene Blue — observations and questions (Personal report · Accessed 2026-09-30)

Weight-based oral claims: 0.5–1 mg/kg once daily. Preserved guides give this much larger band, while others step weekly from 5 to 10 to 15–20 mg each morning; another holds 5 mg a week and 10 mg two weeks. Their proposed ceilings conflict. None establishes an optimum or a safe ceiling.

Micrograms and split doses also appear. Older LongeCity reports use nominal 60 mcg amounts. A different Reddit user describes 5 mg under the tongue twice daily, totaling 10 mg/day. These forms and frequencies cannot be merged into one oral protocol; uncertain drop calculations weaken comparisons. Methylene Blue Experiences — page 1 (Community discussion · Accessed 2026-09-30) · Half life and whether or not we should keep MB constantly in our system (Community discussion · Accessed 2026-09-30)

The well-known memory experiment used 280 mg once. Rodriguez's 26-person study used immediate-release oral capsules, about 4 mg/kg for an assumed 70 kg adult, and tested an hour later. It reported a 7% increase in correct memory-retrieval responses. This cannot validate 1–15 mg daily habits, longevity claims or an animal-derived 'sweet spot'. Rodriguez et al.: Multimodal randomized functional MR imaging of methylene blue in the human brain (Official context · Accessed 2026-09-30)

Source context — Methylene Blue Experiences — page 1: Old anonymous nominal microgram calculations and historical aquarium-product discussion; no verified amount or human PK measurement. Not evidence of contemporary prevalence or route equivalence.

Source context — Half life and whether or not we should keep MB constantly in our system: No PK study supplied; arithmetic is only author's nominal concentration. Other very-high-dose stroke stories are not proof of treatment or safety and are not reproduced as a protocol.

Half-life, onset & duration

Felt onset	Same-day or near-immediate clarity in some accounts, less fog after a few days in another; no dependable common window.
Felt duration	Several hours in one uncertain sublingual log; other accounts describe same-day wear-off or irritability after a lift. Nighttime dreams can outlast daytime impressions.
Half-life	Measured context differs: 5.25 hours after 100 mg IV, about 24 hours in IV labeling, and 14–27 or 6–26 hours with 200 or 400 mg oral MMX after bowel preparation. None measures low-dose drops.

Notes

Same day in some accounts; a few days in others. The 3 mg first-use author described changes that day; the 15 mg/day author called clarity almost immediate. CuteDerpster noticed less fog within days at 5–8 mg/day. Their observations concern different outcomes and do not establish one onset time. flowradiance: First experience with Methylene Blue — observations and questions (Personal report · Accessed 2026-09-30) · awokensoul_: Experiencing Changes with Methylene Blue and Stimulants (Personal report · Accessed 2026-09-30) · CuteDerpster: Experience with Methylene blue (Personal report · Accessed 2026-09-30)

Several hours in one log; no dependable general window. MercuryAX still described concentration about three hours later. Older X accounts describe effects wearing off the same day or irritability a few hours after an initial lift. That is subjective duration, not clearance, and does not predict another person's workday. MercuryAX: Methylene Blue Trial (Personal report · Accessed 2026-09-30)

Measured half-lives depend on route and formulation. Peter's seven-volunteer study estimated 5.25 hours after 100 mg IV. PROVAYBLUE labeling gives approximately 24 hours. Repici's bowel-prep MMX study gives 14–27 hours after 200 mg oral and 6–26 hours after 400 mg, with a median 16-hour peak. These are not low-dose-drop kinetics or felt-effect windows. Peter et al.: Pharmacokinetics and organ distribution of intravenous and oral methylene blue (Official context · Accessed 2026-09-30) · DailyMed: PROVAYBLUE methylene blue injection prescribing information (Official context · Accessed 2026-09-30) · Repici et al.: Methylene blue MMX tablets — safety, tolerability and bioavailability (Official context · Accessed 2026-09-30)

Source context — MercuryAX: Methylene Blue Trial: Unverified extremely small estimated amount, inconsistent drops, music and expectancy confounds; author's 'manic' adjective is not a diagnosis. Sublingual superiority is speculation.

Source context — Peter et al.: Pharmacokinetics and organ distribution of intravenous and oral methylene blue: Abstract only; mixed human PK/rat distribution paper. IV result cannot establish a human oral-drop half-life. PubMed and Europe PMC article UI failed, API body succeeded.

Source context — Repici et al.: Methylene blue MMX tablets — safety, tolerability and bioavailability: Author-hosted abstract, not full paper; specialized delayed-release colon-staining formulation after bowel cleansing, not oral drops. Publication year 2012; DOI contains 2011.

Cycles people discuss

Daily or occasional	Daily use for two months, once or twice weekly on demanding days, weeks off and 2–4-week personal trials all appear.
Break preferences	5 days on/2 off, every-other-day use and a week off monthly are discussed; they do not establish tolerance resets or medication-interaction safety.

Notes

Daily use and occasional workday use both occur. CuteDerpster described roughly 1 mg/day for two months. Flowradiance later used it once or twice weekly on demanding days, sometimes taking several weeks off. Preserved accounts include 2–4-week personal trials and open-ended use; none establishes long-term safety. CuteDerpster: Experience with Methylene blue (Personal report · Accessed 2026-09-30) · flowradiance: First experience with Methylene Blue — observations and questions (Personal report · Accessed 2026-09-30)

Five days on, two off is a preference, not an established rule. A Reddit author used weekends off to give the brain a break while saying cycling was unnecessary. Older accounts mention every-other-day use or a week off monthly. Tolerance and reset explanations remain lore; a break does not establish medication-interaction safety. Half life and whether or not we should keep MB constantly in our system (Community discussion · Accessed 2026-09-30)

Stacks

Mitochondrial stack talk	CoQ10, PQQ and NMN/NR/NAD+ appear beside MB; the combinations do not establish added benefit.
Red light and HBOT	One user pairs red light 30–60 minutes later; older discussion adds hyperbaric oxygen. These combined experiences cannot isolate MB.
Nootropics and other add-ons	Caffeine, theanine, racetams, lion's mane and creatine appear in stack discussion. Vitamin C pairing is debated rather than required.

Notes

Stacks complicate both benefits and adverse stories. One opened user pairs red light 30–60 minutes later. Older discussion adds CoQ10, PQQ, NMN/NR/NAD+, caffeine or other nootropics and sometimes HBOT. The first-use exercise account included several supplements; the adverse workout record also preserves caffeine and retatrutide exposure. These combinations prevent clean attribution. Experiences with Methylene Blue? (Community discussion · Accessed 2026-09-30) · flowradiance: First experience with Methylene Blue — observations and questions (Personal report · Accessed 2026-09-30) · espresso_maniac: First methylene blue use and alarming workout symptoms (Personal report · Accessed 2026-09-30)

Mito stack (most common): MB + CoQ10 (~100–200 mg with fat in many charts) ± PQQ ± NMN/NR/NAD+ — attribution heavily confounded; no combined Phase 3 lifestyle proof. [community]

Red / near-infrared light: Same-day photobiomodulation (often ~630–670 nm class panels discussed, 5–10+ min near face/head in consumer guides) paired with low-dose oral MB — rooted in overlapping cytochrome/mito research, popularized as “red + blue.” [community]

HBOT adjacency: Clinic content sometimes layers hyperbaric oxygen + red light + MB as a mitochondrial “stacked therapy” — expensive, multi-modality, confounded. [community]

Nootropic adjacency: Caffeine, L-theanine, racetams, lion’s mane, creatine (~5 g) appear beside MB in stack blogs; watch overstimulation and any serotonergic nootropics/herbs. [community]

Vitamin C redox debate: High-dose ascorbate + MB redox interactions are discussed in specialty literature (context-dependent, sometimes conflicting); not a casual must-pair. [community]

Source context — espresso_maniac: First methylene blue use and alarming workout symptoms: Estimated heart rate, inconsistent drop/mg arithmetic, no medical records; current body says retatrutide not taken for a week. Two-espressos/very-low-dose context survives only in frozen earlier review and is not reverified here. No confirmed heart attack or causation.

Watch for

Serious interactions	MB inhibits monoamine oxidase. IV labeling warns of potentially fatal serotonin syndrome with serotonergic medicines and opioids, and flags dextromethorphan; tiny-dose stories do not establish a safe workaround.
G6PD and medical cautions	G6PD deficiency carries severe red-cell-damage risk. Pregnancy, breastfeeding, kidney impairment and interference with clinical monitoring also need medical context.
Adverse experiences	Headache, nausea, restlessness, light sensitivity and sleep disruption are reported. One exercise account sought hospital evaluation for chest tightness, blurred vision and breathlessness after about 7–7.5 mg.
Contents and staining	USP wording and urine color cannot verify bottle contents. Blue staining of mouth, teeth and household surfaces is also reported.

Notes

Medication interactions can be serious. Methylene blue inhibits monoamine oxidase, an enzyme involved in neurotransmitter breakdown. The IV label warns of potentially fatal serotonin syndrome with serotonergic medicines and opioids, also flagging dextromethorphan. Tiny-dose anecdotes do not establish a safe workaround or medication-switch interval. DailyMed: PROVAYBLUE methylene blue injection prescribing information (Official context · Accessed 2026-09-30)

G6PD deficiency can mean severe red-cell damage. It is a clinical contraindication because of hemolysis and anemia. Pregnancy, breastfeeding and kidney impairment also require medical context. The dye can interfere with clinical monitoring; the IV label's precautions cannot become a consumer safety guarantee. DailyMed: PROVAYBLUE methylene blue injection prescribing information (Official context · Accessed 2026-09-30)

Headache, GI upset and sleep disruption are practical drawbacks. Reports include light sensitivity, nausea, restlessness and unusually intense dreams. A workout author reported chest tightness, blurred vision and breathlessness after about 7–7.5 mg, sought hospital evaluation and stopped. The event was not a confirmed heart attack or established MB reaction. CuteDerpster: Experience with Methylene blue (Personal report · Accessed 2026-09-30) · 2 Days in a and weird dreams (Community discussion · Accessed 2026-09-30) · espresso_maniac: First methylene blue use and alarming workout symptoms (Personal report · Accessed 2026-09-30)

Oral drops, capsules and troches are the consumer discussion. Troches dissolve in the mouth. Older notes include 5, 10, 25 and 50 mg solid products. Aquarium and industrial dye are different product contexts; a USP claim alone cannot verify a bottle. This is not a peptide requiring a vial recipe.

Quality arguments do not verify every product. The preserved record includes a subreddit assay claim that 22 of 61 bottles passed and 39 failed. Those test bodies and methods were not reopened; it is a community claim, not an independent audit here. USP wording, urine color and a favorable review cannot settle actual contents.

Full notes

What it is and why people look it up

A small molecule that can carry electrons. Also called methylthioninium chloride, it changes between oxidized and reduced forms. The mitochondrial shorthand means helping the cell's energy machinery move electrons; that explanation does not establish better energy or slower aging in a person. Official context
Oral drops, capsules and troches are the consumer discussion. Troches dissolve in the mouth. Older notes include 5, 10, 25 and 50 mg solid products. Aquarium and industrial dye are different product contexts; a USP claim alone cannot verify a bottle. This is not a peptide requiring a vial recipe. Community Community
Hospital treatment is a separate use. PROVAYBLUE is an intravenous medicine for acquired methemoglobinemia, a blood condition impairing oxygen delivery. That indication does not approve oral drops for cognition. Related hydromethylthionine/LMTM dementia formulations also should not be treated as interchangeable consumer MB. Official context Community

Benefits people seek and describe

Less fog and more usable mental energy. CuteDerpster described easier mental calculations, visualization and staying awake through a movie. Other reports emphasize motivation rather than a caffeine buzz. These are personal changes with other life changes or supplements involved, not proof of improved mitochondrial function. Personal report Personal report
Calm clarity can feel different from stimulation. A 15 mg/day author described immediate calm and clearer thinking, then missed the usual motivating effect of caffeine and prescribed dexamphetamine. Neither the report nor speculative replies establish that MB blocks stimulants. Older accounts also describe a jittery or overstimulated start. Personal report Community
Memory, mood and longevity claims have different support. A small single-dose human study found a memory-retrieval signal; it did not test everyday microdosing. Historical bipolar and exposure-therapy research are separate medical questions. Longevity, skin and neuroprotection talk remains stronger than evidence of durable healthy-user benefit. Official context Community

Doses people discuss

These are reported amounts and circulated charts, not instructions. Milligrams (mg) and milligrams per kilogram (mg/kg) are different units; drop counts depend on the actual product and dropper.

Fixed oral daily amounts: 0.5–4 mg and 5–15 mg in older charts. Opened personal reports include roughly 1 mg once daily after a break, 5–8 mg/day, and about 15 mg/day. A separate first-use account reported 3 mg that morning. These are separate experiences, not a progression or validated effective range. Community Personal report Personal report Personal report
Weight-based oral claims: 0.5–1 mg/kg once daily. Preserved guides give this much larger band, while others step weekly from 5 to 10 to 15–20 mg each morning; another holds 5 mg a week and 10 mg two weeks. Their proposed ceilings conflict. None establishes an optimum or a safe ceiling. Community
Micrograms and split doses also appear. Older LongeCity reports use nominal 60 mcg amounts. A different Reddit user describes 5 mg under the tongue twice daily, totaling 10 mg/day. These forms and frequencies cannot be merged into one oral protocol; uncertain drop calculations weaken comparisons. LongeCity Reddit r/methylene_blue

Half-life in community discussion

About 3 hours and 4–6 hours are conflicting forum claims. LongeCity and Reddit respectively circulate these figures without measurements. The Reddit post calls its figure oral; the LongeCity reply does not establish a route-specific value. Neither verifies low-dose drops. Half-life describes concentration falling by half, not focus wearing off. LongeCity Reddit r/methylene_blue

When people notice a change

Same day in some accounts; a few days in others. The 3 mg first-use author described changes that day; the 15 mg/day author called clarity almost immediate. CuteDerpster noticed less fog within days at 5–8 mg/day. Their observations concern different outcomes and do not establish one onset time. Personal report Personal report Personal report
Minutes in one sublingual log, without verified delivery. MercuryAX described focus shortly after a nominal 1–3 mcg under-the-tongue exposure, explicitly acknowledging placebo and inconsistent drops. That unusual account cannot establish predictable absorption or justify expecting an immediate effect. Personal report

How long people feel it

Several hours in one log; no dependable general window. MercuryAX still described concentration about three hours later. Older X accounts describe effects wearing off the same day or irritability a few hours after an initial lift. That is subjective duration, not clearance, and does not predict another person's workday. Personal report Community
Sleep changes can outlast the daytime impression. The 3 mg first-use account reported stressful dreams that night. Another morning-dose thread describes vivid dreams without daytime mental benefit. A two-month daily-use report is follow-up, not evidence that a single dose lasts two months. Personal report Reddit r/methylene_blue Personal report

Cycles and time off

Daily use and occasional workday use both occur. CuteDerpster described roughly 1 mg/day for two months. Flowradiance later used it once or twice weekly on demanding days, sometimes taking several weeks off. Preserved accounts include 2–4-week personal trials and open-ended use; none establishes long-term safety. Personal report Personal report Community
Five days on, two off is a preference, not an established rule. A Reddit author used weekends off to give the brain a break while saying cycling was unnecessary. Older accounts mention every-other-day use or a week off monthly. Tolerance and reset explanations remain lore; a break does not establish medication-interaction safety. Reddit r/methylene_blue Community

Good to know

Medication interactions can be serious. Methylene blue inhibits monoamine oxidase, an enzyme involved in neurotransmitter breakdown. The IV label warns of potentially fatal serotonin syndrome with serotonergic medicines and opioids, also flagging dextromethorphan. Tiny-dose anecdotes do not establish a safe workaround or medication-switch interval. Official context
G6PD deficiency can mean severe red-cell damage. It is a clinical contraindication because of hemolysis and anemia. Pregnancy, breastfeeding and kidney impairment also require medical context. The dye can interfere with clinical monitoring; the IV label's precautions cannot become a consumer safety guarantee. Official context
Headache, GI upset and sleep disruption are practical drawbacks. Reports include light sensitivity, nausea, restlessness and unusually intense dreams. A workout author reported chest tightness, blurred vision and breathlessness after about 7–7.5 mg, sought hospital evaluation and stopped. The event was not a confirmed heart attack or established MB reaction. Personal report Reddit r/methylene_blue Personal report Community

From community experience

Lower amounts felt steadier to one author. CuteDerpster's 5–8 mg/day fog improvement later came with brighter colors, light sensitivity and headaches. Warm hands were also reported about an hour after ingestion. Symptoms cleared during a break; roughly 1 mg/day was then described as steadier. This preserves the dose-change story without proving a dose-response rule. Personal report
No change and worse thinking also occur. The January 2025 discussion includes several years of no noticeable effects, another brief nonresponse, and brain fog caffeine did not relieve. In the dream thread, some enjoyed vivid dreams while another found them disruptive. Strong testimonials cannot supply a success rate. Reddit r/Biohackers Reddit r/methylene_blue
X accounts describe different kinds of energy. Preserved reports include x3ideRaven's focus and motivation after about a week at five morning drops; ItIsHoeMath's quick lift followed by irritability; mintbluetoyota's overstimulation, then work focus, then baseline; and cube_flipper's good sleep with possible nightmares and grogginess. These original posts could not be reopened here. Community
Stacks complicate both benefits and adverse stories. One opened user pairs red light 30–60 minutes later. Older discussion adds CoQ10, PQQ, NMN/NR/NAD+, caffeine or other nootropics and sometimes HBOT. The first-use exercise account included several supplements; the adverse workout record also preserves caffeine and retatrutide exposure. These combinations prevent clean attribution. Reddit r/Biohackers Personal report Personal report Community Community
Blue urine and staining are not benefit tests. The 15 mg/day author saw blue urine, then normal color; the 3 mg author saw none. Mouth, teeth and household staining annoy users. Food, diluted water, capsules or troches change the experience, but absence of color does not prove underdosing or a fake bottle. Personal report Personal report Community
Quality arguments do not verify every product. The preserved record includes a subreddit assay claim that 22 of 61 bottles passed and 39 failed. Those test bodies and methods were not reopened; it is a community claim, not an independent audit here. USP wording, urine color and a favorable review cannot settle actual contents. Community

Supporting medical and research context

Measured half-lives depend on route and formulation. Peter's seven-volunteer study estimated 5.25 hours after 100 mg IV. PROVAYBLUE labeling gives approximately 24 hours. Repici's bowel-prep MMX study gives 14–27 hours after 200 mg oral and 6–26 hours after 400 mg, with a median 16-hour peak. These are not low-dose-drop kinetics or felt-effect windows. Official context Official context Official context
The well-known memory experiment used 280 mg once. Rodriguez's 26-person study used immediate-release oral capsules, about 4 mg/kg for an assumed 70 kg adult, and tested an hour later. It reported a 7% increase in correct memory-retrieval responses. This cannot validate 1–15 mg daily habits, longevity claims or an animal-derived 'sweet spot'. Official context