STUDresearch · Non-peptide
Lac-Phe
Also known as
Lactoyl-Phenylalanine · N-lactoyl-phenylalanine
Community talk. May be wrong. Not medical advice. Not a protocol. Not for human or animal use.
Non-peptide
Niche talk
Systemic
Endogenous / IV
Performance / endurance
Endogenous circulating exercise metabolite; exogenous human use remains experimental, and no oral or SubQ consumer route was verified.
What people say
Lac-Phe is N-lactoyl-phenylalanine, an endogenous exercise-induced metabolite linked to feeding suppression in mice; it is not an established exercise replacement or consumer medicine.
Doses people talk about
Animal amounts do not translate into a human consumer dose. The completed human IV crossover registry does not post the administered amount or results.
How it may feel
No product-verified oral or injected self-report was found in the checked community threads. Endogenous post-exercise concentration changes are measurements, not a felt exogenous-use diary.
Mouse single exposure50 mg/kg IP once
In diet-induced-obese male mice, the acute experiment assessed food intake and activity; this is not a human dose.
Mouse repeated exposure50 mg/kg/day IP
Diet-induced-obese male mice received daily Lac-Phe for ten days; reduced food intake and body weight do not establish a human regimen.
Half-life & effect duration
- Half-life in the body
- Supplemented Lac-PheNo settled estimate
- Felt duration people report
- Felt durationNo consistent firsthand supplemented-Lac-Phe timeline reported
Cycles people discuss
No human consumer cycle was established. The animal efficacy experiment used daily intraperitoneal exposure for ten days, while the completed human IV crossover trial has no posted dosing amount or results.
Timing
A practical consumer schedule is not established. The human exogenous study used IV administration; it does not supply an oral or subcutaneous routine for consumer products.
Stacks
Exercise is the physiologic source described in the human literature; adding diet, training or other agents makes any weight or appetite attribution especially difficult.
Watch for
Unknowns: Long-term safety for gray-market preparations is often poorly characterized.
Tap a line to jump into the full notes. Research only — may be wrong.
Timing context & sources
Half-life in the body
No exogenous human parent-compound elimination half-life was established in the checked material.
Human cohorts measured endogenous Lac-Phe rising after exercise and remaining elevated for up to about three hours; a completed IV crossover trial has no posted amount, concentration-time results or outcome results.
An endogenous formation-and-decline curve after exercise includes ongoing production and is not an exogenous elimination study; the registry has no posted results.
- An exercise-inducible metabolite that suppresses feeding and obesity (opens in a new tab)Human exercise cohorts and Figure 3 mouse experiments: endogenous post-exercise Lac-Phe trajectory; 50 mg/kg IP once and 50 mg/kg/day IP for 10 days in diet-induced-obese male mice.Human portion measured endogenous exercise response rather than exogenous dosing; efficacy dosing and feeding/weight outcomes were in mice.
- ClinicalTrials.gov NCT06743009 — Metabolic Effects of the Exercise-metabolite Lac-Phe (opens in a new tab)Completed double-blind randomized crossover study, actual enrollment 23, IV Lac-Phe versus saline in adults with BMI 28–35; registry updated March 27, 2026 with no results posted and no administered amount shown.Registry record only; no posted results, concentration-time analysis or administered Lac-Phe amount.
Felt duration people report
No product-verified exogenous human felt-duration account was found in the checked community sources, and the completed human trial has no posted results.
Community material discussed sourcing, exercise-pill headlines and proposed endogenous induction rather than documented oral, SubQ or IV consumer experience.
This is a bounded finding from the reviewed sources, not proof that no account exists anywhere; source-seeking and theoretical discussion cannot supply a felt window.
- Reddit r/Biohackers — Any reviews of Hello Bio? (opens in a new tab)Original post seeks a commercial Lac-Phe research source but provides no self-use, amount, route, outcome or follow-up experience.Single source-seeking post; it cannot establish product identity, use prevalence, dosing or effects.
- Reddit r/longevity — The benefits of exercise in a pill? (opens in a new tab)Headline discussion and comments distinguish the mouse appetite/weight finding from broader exercise benefits; no participant reports exogenous Lac-Phe use.Discussion of a news article, not an exposure-verified user cohort; absence is bounded to the visible thread.
- ClinicalTrials.gov NCT06743009 — Metabolic Effects of the Exercise-metabolite Lac-Phe (opens in a new tab)Completed double-blind randomized crossover study, actual enrollment 23, IV Lac-Phe versus saline in adults with BMI 28–35; registry updated March 27, 2026 with no results posted and no administered amount shown.Registry record only; no posted results, concentration-time analysis or administered Lac-Phe amount.
What people say
- Training confound: PRs and scale changes almost always co-travel with diet phase and programming. anecdote
- Appetite in animals: Landmark papers show Lac-Phe rises with exercise and can reduce food intake in models. animal
- Human measurement: Exercise raises Lac-Phe; therapeutic dosing products are not established medicines. trial
- Body-weight evidence: In diet-induced-obese mice, 50 mg/kg/day intraperitoneal Lac-Phe for 10 days reduced food intake and body weight; this does not establish human body-composition, strength, or soft-tissue benefit. animal
- Human evidence boundary: Human studies measured endogenous Lac-Phe after exercise; a completed 23-person IV crossover trial has no posted results, so exogenous appetite or glucose benefit remains unreported. trial
Doses people talk about
- Human supplement dose: not settled. forum
- Human exogenous study: A completed 23-person crossover trial used IV Lac-Phe versus saline, but the registry posts neither the administered amount nor results. No consumer oral or SubQ dose was verified. trial
- Animal study scale: paper mg/kg doses do not equal a consumer daily gram label. animal
- Framing: N-lactoyl-phenylalanine exercise metabolite (2022+ papers). animal
How it may feel
- No verified consumer first week: The checked community threads discussed headlines, possible sourcing, or ways to raise endogenous Lac-Phe; they did not provide a product-verified oral or injected self-report. forum
- Days 2–7: No product-verified human self-use timeline was found in the checked community sources; a generic side-effect window cannot be assigned to Lac-Phe. forum
- Weeks 1–2: The checked community discussions contained no product-verified exogenous Lac-Phe log, so there is no supported subjective checkpoint. forum
- Acute exercise: Endogenous rise with hard training. trial
- Acute human context: Endogenous Lac-Phe rises after exercise; the completed IV crossover trial has no posted results, so an exogenous day-1 felt profile is not established. trial
Cycles people discuss
- Unknown: No consensus human cycle. forum
- No verified self-protocol: The checked community sources did not document a product-verified weeks-on/weeks-off Lac-Phe regimen. forum
- No magic cycle: There is rarely one universal “correct” on/off calendar across forums. forum
- Reassess: Stop and reassess if adverse effects appear; this is not medical care. forum
Timing
- Timing practicalities: People time doses around side effects, training, and sleep more than perfect PK. forum
- Endogenous excursion is not half-life: Human exercise cohorts showed circulating Lac-Phe remaining elevated for up to about three hours after exercise; this does not establish exogenous parent-compound elimination. trial
- Published PK: Where human PK exists it should override forum half-life memes for Lac-Phe. trial
More on what it is
- Why people care: “Exercise mimetic satiety molecule” headlines. forum
- Research posture: Educational summary of public discussion and literature themes only. forum
- How people talk about it: Forum volume is a popularity signal for Lac-Phe, not proof it works for you. forum
- What it is: N-lactoyl-phenylalanine exercise-induced metabolite linked to appetite suppression in research (2022+ wave). trial
- Research only: Not approved advice for self-experimentation; legality and access vary by place. forum
Stacks
- Exercise itself is the physiologic producer: trial forum
- Less is clearer: Solo runs make personal n=1 easier to interpret than five-compound blasts. forum
Storage notes
- No mix instructions here: STUDresearch does not list reconstitution, diluent volumes, or syringe unit charts. People reconstitute many different ways and vial labels differ — that content creates more confusion than clarity. forum
- Storage (general talk only): Unopened research products are usually kept cool, dry, and away from light per the seller label. Anything after first use is product-specific — follow the label, not a universal forum SOP. forum
Watch for
- Unknown human pharmacologic safety: Community discussion does not establish the safety of pharmacologic Lac-Phe use. forum
- General caution: Research chemical and compounded sources vary; adverse events may be under-reported. forum
- Injection site (if injected): Redness, itch, lumps, bruise — technique and product quality matter. forum
- Unknowns: Long-term safety for gray-market preparations is often poorly characterized. forum
- Stack noise: Sides logged on multi-agent stacks cannot be blamed cleanly on one compound. forum
- Seek care red flags: Severe allergic reaction, chest pain, neuro changes, or uncontrolled BP/glucose need real medical care — not forum advice. forum
Evidence mix
Mostly community / anecdote tags
Full: every bullet (trial + community). Use Scan for a faster bro-science read.