Questions answered with evidence.
DECISION QUESTIONS
Decision questions
Cross-entity answers for questions people are actively asking.
What is currently being studied for visceral fat?
The evidence depends on the population and the question. An approved indication, obesity treatment, and investigational research should not be collapsed into one list.
Open answer 02What is the evidence for BPC-157 and TB-500?
Both are promoted for recovery far beyond the human evidence. The main differences are the shape of the preclinical literature and the identity problem around TB-500.
Open answer 03Is retatrutide approved or available?
Retatrutide remains an investigational medicine. Published human evidence is not the same thing as regulatory approval or lawful retail availability.
Open answer 04How do tesamorelin, sermorelin, CJC-1295, and ipamorelin differ?
They all interact with the growth-hormone axis, but through different receptors, with very different clinical and regulatory maturity.
Open answer 05What does “research peptide” mean?
“Research peptide” is not a clinical evidence grade or FDA approval category. It often describes how a product is marketed, not whether it is safe, effective, lawful for human use, or equivalent to a studied medicine.
Open answer 06Are compounded peptides FDA approved?
Compounded drugs are not FDA approved. An active ingredient appearing in an approved medicine does not make a compounded formulation equivalent to that product or exempt it from product-quality and legal constraints.
Open answer 07What does preclinical peptide evidence mean?
Preclinical evidence can clarify mechanism, biological plausibility, or research direction, but it does not establish that a peptide safely improves a human health outcome.
Open answer 08What does WADA S0 mean for peptides?
WADA S0 covers non-approved substances with no current approval for human therapeutic use by a government regulatory health authority. Sport status is separate from whether a substance has published research.
Open answer 09What is the difference between a peptide and an approved peptide drug?
“Peptide” describes a broad molecular category. An approved peptide drug is a specific, reviewed product with a defined formulation, manufacturing standard, label, population, indication, and benefit-risk determination.
Open answerEVIDENCE QUESTIONS
Evidence questions
Human and preclinical evidence kept on separate lines.
What is the evidence for BPC-157?
Interest in BPC-157 is driven by broad preclinical findings. The central evidence gap is not whether animal signals exist, but whether a defined product is safe and effective in people.
Open answer 02What is the evidence for Retatrutide?
Retatrutide has meaningful randomized human evidence, but it should not be described as an available approved alternative to semaglutide or tirzepatide.
Open answer 03What is the evidence for Tesamorelin?
Tesamorelin has the strongest human evidence in a narrow, labeled population. Evidence from that population should not be generalized to routine weight management.
Open answer 04What is the evidence for MOTS-c?
MOTS-c is biologically interesting, but human physiology observations are frequently mistaken for evidence that an exogenous product improves health or performance.
Open answer 05What is the evidence for TB-500?
The first question for TB-500 is entity identity: evidence about full-length thymosin beta-4 should not be treated as direct evidence for every TB-500 product.
Open answer 06What is the evidence for Ipamorelin?
Ipamorelin has human exposure data, but the evidence base is narrow and does not validate generalized anti-aging or body-composition claims.
Open answer 07What is the evidence for Semaglutide?
Semaglutide has a mature evidence base, but claims must remain tied to the specific product, indication, population, and label.
Open answer 08What is the evidence for Tirzepatide?
Tirzepatide is an approved dual-receptor medicine with a mature human evidence base; it is not interchangeable with investigational retatrutide.
Open answer 09What is the evidence for Sermorelin?
Sermorelin has a longer clinical history than many wellness-market peptides, but historical use is not the same as a current approved product or modern outcomes evidence.
Open answer 10What is the evidence for SS-31 / Elamipretide?
SS-31 is no longer simply an unapproved research peptide: elamipretide now has one narrow accelerated-approval pathway, with confirmatory evidence still required.
Open answer 11What is the evidence for CJC-1295?
CJC-1295 can produce measurable endocrine effects, but biomarker changes should not be confused with proven improvement in health outcomes.
Open answer 12What is the evidence for KPV?
KPV has a plausible anti-inflammatory research story in cells and animals, but that evidence has not established a safe or effective human drug product.
Open answer 13What is the evidence for GHK-Cu?
GHK-Cu is biologically active and has limited topical human research, but the evidence does not validate broad injectable, systemic, or anti-aging claims.
Open answer 14What is the evidence for Thymosin Alpha-1?
Thymosin alpha-1 has more human research than many wellness-market peptides, yet the evidence remains indication-specific and does not amount to U.S. approval or a general immune-boosting claim.
Open answer 15What is the evidence for Thymosin Beta-4?
Thymosin beta-4 has early human development work and extensive preclinical biology, but that record does not establish routine systemic recovery use or equivalence to TB-500 products.
Open answer 16What is the evidence for LL-37?
LL-37 is an important endogenous host-defense peptide, but complex pro-inflammatory, anti-inflammatory, antimicrobial, and cytotoxic actions make simple immune-support claims misleading.
Open answer 17What is the evidence for AOD-9604?
AOD-9604 is a useful example of why preclinical promise is not enough: substantial human development did not produce persuasive efficacy or an approved obesity indication.
Open answer 18What is the evidence for Epitalon?
Epitalon's longevity narrative is much stronger than its verifiable modern human evidence. The record remains hypothesis-generating, not outcome-proving.
Open answer 19What is the evidence for Semax?
Semax has some human research, but the evidence is too limited and geographically concentrated to support broad cognitive-enhancement or neuroprotection claims.
Open answer 20What is the evidence for Selank?
Selank's human evidence is small and geographically concentrated. It is not a U.S.-approved anxiety treatment and should not be treated as equivalent to established therapies.
Open answer 21What is the evidence for DSIP?
DSIP's therapeutic reputation rests on very small historical studies and uncertain physiology, not on a modern clinical development program.
Open answer 22What is the evidence for PT-141 / Bremelanotide?
PT-141 is commonly marketed more broadly than the evidence allows. The decision-grade record concerns FDA-reviewed bremelanotide, its subcutaneous formulation, and one narrow population and indication.
Open answer 23What is the evidence for Melanotan II?
Melanotan II has no approved tanning or sexual-health use, and the available human record provides more reason for safety concern than confidence in benefit.
Open answer 24What is the evidence for Glutathione?
Glutathione evidence is inseparable from route, formulation, outcome, and product quality. Oral biomarker studies do not establish intravenous efficacy or safety.
Open answerRESEARCH QUESTIONS
Research questions
What researchers are investigating, without turning an area of study into a treatment claim.
What is BPC-157 being studied for?
Current source-backed research areas include Tissue repair, Gastrointestinal models, Inflammation, Angiogenesis. These areas describe investigation, not established personal benefit.
Open answer 02What is Retatrutide being studied for?
Current source-backed research areas include Obesity, Type 2 diabetes, Liver fat, Cardiometabolic outcomes. These areas describe investigation, not established personal benefit.
Open answer 03What is Tesamorelin being studied for?
Current source-backed research areas include HIV lipodystrophy, Visceral adipose tissue, Liver fat, Growth hormone axis. These areas describe investigation, not established personal benefit.
Open answer 04What is MOTS-c being studied for?
Current source-backed research areas include Mitochondrial signaling, Exercise physiology, Metabolic regulation, Aging biology. These areas describe investigation, not established personal benefit.
Open answer 05What is TB-500 being studied for?
Current source-backed research areas include Actin biology, Tissue repair, Cell migration, Angiogenesis. These areas describe investigation, not established personal benefit.
Open answer 06What is Ipamorelin being studied for?
Current source-backed research areas include Growth hormone secretion, Ghrelin receptor, Postoperative ileus, Endocrine pharmacology. These areas describe investigation, not established personal benefit.
Open answer 07What is Semaglutide being studied for?
Current source-backed research areas include Type 2 diabetes, Chronic weight management, Cardiovascular risk, MASH. These areas describe investigation, not established personal benefit.
Open answer 08What is Tirzepatide being studied for?
Current source-backed research areas include Type 2 diabetes, Chronic weight management, Obstructive sleep apnea, Cardiometabolic outcomes. These areas describe investigation, not established personal benefit.
Open answer 09What is Sermorelin being studied for?
Current source-backed research areas include Growth hormone diagnostics, Growth hormone deficiency, GHRH physiology. These areas describe investigation, not established personal benefit.
Open answer 10What is SS-31 / Elamipretide being studied for?
Current source-backed research areas include Barth syndrome, Mitochondrial cardiolipin, Muscle strength, Mitochondrial disease. These areas describe investigation, not established personal benefit.
Open answer 11What is CJC-1295 being studied for?
Current source-backed research areas include Growth hormone secretion, IGF-1, GHRH pharmacology, Long-acting analogs. These areas describe investigation, not established personal benefit.
Open answer 12What is KPV being studied for?
Current source-backed research areas include Intestinal inflammation, Melanocortin signaling, Peptide transport, Innate immunity. These areas describe investigation, not established personal benefit.
Open answer 13What is GHK-Cu being studied for?
Current source-backed research areas include Skin remodeling, Wound biology, Copper signaling, Extracellular matrix. These areas describe investigation, not established personal benefit.
Open answer 14What is Thymosin Alpha-1 being studied for?
Current source-backed research areas include Sepsis, Immune modulation, Infectious disease, Oncology adjunct research. These areas describe investigation, not established personal benefit.
Open answer 15What is Thymosin Beta-4 being studied for?
Current source-backed research areas include Corneal repair, Tissue repair, Actin biology, Cell migration. These areas describe investigation, not established personal benefit.
Open answer 16What is LL-37 being studied for?
Current source-backed research areas include Antimicrobial defense, Innate immunity, Inflammation, Cytotoxicity. These areas describe investigation, not established personal benefit.
Open answer 17What is AOD-9604 being studied for?
Current source-backed research areas include Obesity, Lipolysis, Growth hormone fragments, Cartilage research. These areas describe investigation, not established personal benefit.
Open answer 18What is Epitalon being studied for?
Current source-backed research areas include Aging biology, Oxidative stress, Gene expression, Pineal peptide research. These areas describe investigation, not established personal benefit.
Open answer 19What is Semax being studied for?
Current source-backed research areas include Ischemic stroke, Neurotrophic signaling, Cognition, ACTH-derived peptides. These areas describe investigation, not established personal benefit.
Open answer 20What is Selank being studied for?
Current source-backed research areas include Anxiety, Neurotransmission, Tuftsin analogs, Neuroimmune signaling. These areas describe investigation, not established personal benefit.
Open answer 21What is DSIP being studied for?
Current source-backed research areas include Sleep physiology, Stress response, Neuropeptide identity, Electroencephalography. These areas describe investigation, not established personal benefit.
Open answer 22What is PT-141 / Bremelanotide being studied for?
Current source-backed research areas include Hypoactive sexual desire disorder, Melanocortin receptors, Sexual distress, Female sexual health. These areas describe investigation, not established personal benefit.
Open answer 23What is Melanotan II being studied for?
Current source-backed research areas include Melanocortin receptors, Pigmentation, Adverse-event surveillance, Sexual effects. These areas describe investigation, not established personal benefit.
Open answer 24What is Glutathione being studied for?
Current source-backed research areas include Redox biology, Oxidative stress, Oral supplementation, Skin pigmentation. These areas describe investigation, not established personal benefit.
Open answerAPPROVAL QUESTIONS
Approval questions
Current FDA context without confusing approval, access, and sport status.
Is BPC-157 FDA approved?
Current U.S. status for BPC-157: Not FDA approved; FDA identifies important compounding safety and characterization concerns.
Open answer 02Is Retatrutide FDA approved?
Current U.S. status for Retatrutide: Investigational and not FDA approved; FDA states retatrutide cannot be used in compounding under federal law.
Open answer 03Is Tesamorelin FDA approved?
Current U.S. status for Tesamorelin: FDA approved only to reduce excess abdominal fat in HIV-infected adults with lipodystrophy; not indicated for weight-loss management.
Open answer 04Is MOTS-c FDA approved?
Current U.S. status for MOTS-c: Not FDA approved; FDA reports no identified human exposure data for drug products containing MOTS-c.
Open answer 05Is TB-500 FDA approved?
Current U.S. status for TB-500: Not FDA approved; product identity and peptide-related impurities are material uncertainties.
Open answer 06Is Ipamorelin FDA approved?
Current U.S. status for Ipamorelin: No FDA-approved drug product; FDA identifies significant safety and characterization concerns for compounding.
Open answer 07Is Semaglutide FDA approved?
Current U.S. status for Semaglutide: FDA approved in specific branded products and indications; compounded products are not FDA approved.
Open answer 08Is Tirzepatide FDA approved?
Current U.S. status for Tirzepatide: FDA approved in specific branded products and indications; compounded products are not FDA approved.
Open answer 09Is Sermorelin FDA approved?
Current U.S. status for Sermorelin: No current FDA-approved drug product identified in the August 2026 source snapshot.
Open answer 10Is SS-31 / Elamipretide FDA approved?
Current U.S. status for SS-31 / Elamipretide: FDA accelerated approval as Forzinity for Barth syndrome patients weighing at least 30 kg; other uses remain unapproved.
Open answer 11Is CJC-1295 FDA approved?
Current U.S. status for CJC-1295: No FDA-approved drug product.
Open answer 12Is KPV FDA approved?
Current U.S. status for KPV: No FDA-approved drug product; FDA reports no identified human exposure data for compounded KPV products and insufficient safety information.
Open answer 13Is GHK-Cu FDA approved?
Current U.S. status for GHK-Cu: No FDA-approved GHK-Cu drug product identified; FDA has listed GHK-Cu among bulk substances considered by its compounding advisory process.
Open answer 14Is Thymosin Alpha-1 FDA approved?
Current U.S. status for Thymosin Alpha-1: No FDA-approved thymosin alpha-1 drug product identified in the August 2026 source snapshot; products are used in some countries outside the United States.
Open answer 15Is Thymosin Beta-4 FDA approved?
Current U.S. status for Thymosin Beta-4: No FDA-approved thymosin beta-4 drug product identified in the August 2026 source snapshot.
Open answer 16Is LL-37 FDA approved?
Current U.S. status for LL-37: No FDA-approved LL-37 drug product; FDA reports insufficient human safety information for compounded LL-37 products.
Open answer 17Is AOD-9604 FDA approved?
Current U.S. status for AOD-9604: No FDA-approved AOD-9604 drug product; FDA identifies limited safety information and potential concerns for compounded use.
Open answer 18Is Epitalon FDA approved?
Current U.S. status for Epitalon: No FDA-approved Epitalon drug product; FDA enforcement records have described Epitalon products as unapproved new drugs.
Open answer 19Is Semax FDA approved?
Current U.S. status for Semax: No FDA-approved Semax drug product; FDA identifies immunogenicity and peptide-impurity concerns for compounded Semax products.
Open answer 20Is Selank FDA approved?
Current U.S. status for Selank: No FDA-approved Selank drug product; FDA identifies immunogenicity and peptide-impurity concerns for compounded Selank acetate products.
Open answer 21Is DSIP FDA approved?
Current U.S. status for DSIP: No FDA-approved DSIP drug product; FDA enforcement records have described DSIP products as unapproved new drugs.
Open answer 22Is PT-141 / Bremelanotide FDA approved?
Current U.S. status for PT-141 / Bremelanotide: Bremelanotide is FDA approved as Vyleesi only for premenopausal women with acquired, generalized hypoactive sexual desire disorder; it is not indicated for men, postmenopausal women, or sexual performance enhancement.
Open answer 23Is Melanotan II FDA approved?
Current U.S. status for Melanotan II: No FDA-approved Melanotan II drug product; FDA identifies safety and immunogenicity concerns and has warned about illegal marketing.
Open answer 24Is Glutathione FDA approved?
Current U.S. status for Glutathione: No FDA-approved injectable glutathione drug product identified; FDA has reported adverse events linked to contaminated compounded sterile glutathione.
Open answerSPORT-STATUS QUESTIONS
Sport-status questions
Current anti-doping context checked independently from clinical evidence and approval.
Is BPC-157 prohibited in sport?
Current sport-status snapshot for BPC-157: Prohibited at all times under the 2026 WADA List (S0).
Open answer 02Is Retatrutide prohibited in sport?
Current sport-status snapshot for Retatrutide: Not specifically named in the 2026 List; athletes should verify current status before use.
Open answer 03Is Tesamorelin prohibited in sport?
Current sport-status snapshot for Tesamorelin: Prohibited at all times under the 2026 WADA List (S2).
Open answer 04Is MOTS-c prohibited in sport?
Current sport-status snapshot for MOTS-c: Prohibited at all times under the 2026 WADA List (S2).
Open answer 05Is TB-500 prohibited in sport?
Current sport-status snapshot for TB-500: Prohibited at all times under the 2026 WADA List (S2).
Open answer 06Is Ipamorelin prohibited in sport?
Current sport-status snapshot for Ipamorelin: Prohibited at all times under the 2026 WADA List (S2).
Open answer 07Is Semaglutide prohibited in sport?
Current sport-status snapshot for Semaglutide: Not specifically named in the 2026 List; athletes should still verify product ingredients.
Open answer 08Is Tirzepatide prohibited in sport?
Current sport-status snapshot for Tirzepatide: Not specifically named in the 2026 List; athletes should still verify product ingredients.
Open answer 09Is Sermorelin prohibited in sport?
Current sport-status snapshot for Sermorelin: Prohibited at all times under the 2026 WADA List (S2).
Open answer 10Is SS-31 / Elamipretide prohibited in sport?
Current sport-status snapshot for SS-31 / Elamipretide: Not specifically named in the 2026 List; athletes should verify current status.
Open answer 11Is CJC-1295 prohibited in sport?
Current sport-status snapshot for CJC-1295: Prohibited at all times under the 2026 WADA List (S2).
Open answer 12Is KPV prohibited in sport?
Current sport-status snapshot for KPV: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 13Is GHK-Cu prohibited in sport?
Current sport-status snapshot for GHK-Cu: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 14Is Thymosin Alpha-1 prohibited in sport?
Current sport-status snapshot for Thymosin Alpha-1: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 15Is Thymosin Beta-4 prohibited in sport?
Current sport-status snapshot for Thymosin Beta-4: Prohibited at all times under the 2026 WADA List (S2), which names thymosin beta-4 and derivatives such as TB-500.
Open answer 16Is LL-37 prohibited in sport?
Current sport-status snapshot for LL-37: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 17Is AOD-9604 prohibited in sport?
Current sport-status snapshot for AOD-9604: Prohibited at all times under the 2026 WADA List (S2) as a growth-hormone fragment.
Open answer 18Is Epitalon prohibited in sport?
Current sport-status snapshot for Epitalon: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 19Is Semax prohibited in sport?
Current sport-status snapshot for Semax: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 20Is Selank prohibited in sport?
Current sport-status snapshot for Selank: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 21Is DSIP prohibited in sport?
Current sport-status snapshot for DSIP: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 22Is PT-141 / Bremelanotide prohibited in sport?
Current sport-status snapshot for PT-141 / Bremelanotide: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 23Is Melanotan II prohibited in sport?
Current sport-status snapshot for Melanotan II: Not specifically named in the 2026 WADA List; athletes should verify current status and product contents.
Open answer 24Is Glutathione prohibited in sport?
Current sport-status snapshot for Glutathione: Not specifically named in the 2026 WADA List; athletes should verify the complete formulation and current status.
Open answerEVIDENCE-LIMIT QUESTIONS
Evidence-limit questions
The most important caveat and the conclusions the current record cannot support.
What are the main evidence limits for BPC-157?
Commercial descriptions often translate animal findings into human recovery claims. The evidence does not support that shortcut.
Open answer 02What are the main evidence limits for Retatrutide?
Promising trial results do not establish approval, product quality outside trials, or suitability for an individual.
Open answer 03What are the main evidence limits for Tesamorelin?
Approval is product-, indication-, and population-specific. It does not validate every compounded formulation or off-label claim.
Open answer 04What are the main evidence limits for MOTS-c?
Endogenous peptide measurements and injected-drug claims are different evidence questions.
Open answer 05What are the main evidence limits for TB-500?
Name similarity is not evidence equivalence.
Open answer 06What are the main evidence limits for Ipamorelin?
Secretagogue activity is a mechanism, not proof of a desirable long-term health outcome.
Open answer 07What are the main evidence limits for Semaglutide?
An approved active ingredient does not make every compounded or counterfeit product equivalent to an approved medicine.
Open answer 08What are the main evidence limits for Tirzepatide?
Approval and evidence attach to labeled products, not to every product marketed with the ingredient name.
Open answer 09What are the main evidence limits for Sermorelin?
Claims about body composition, sleep, or anti-aging require their own clinical evidence.
Open answer 10What are the main evidence limits for SS-31 / Elamipretide?
A rare-disease approval should not be generalized to longevity or performance claims.
Open answer 11What are the main evidence limits for CJC-1295?
Marketed CJC-1295 products may differ in structure, including whether a drug-affinity complex is present.
Open answer 12What are the main evidence limits for KPV?
Results in human-derived cells are not clinical evidence in people, and they do not resolve product quality or dosing questions.
Open answer 13What are the main evidence limits for GHK-Cu?
Topical cosmetic findings cannot be transferred to injected products or systemic outcomes.
Open answer 14What are the main evidence limits for Thymosin Alpha-1?
A large evidence base can still be inconsistent; trial quality, population, co-therapies, and endpoint selection determine what can be concluded.
Open answer 15What are the main evidence limits for Thymosin Beta-4?
Full-length thymosin beta-4, recombinant products, topical formulations, and TB-500 are not interchangeable evidence entities.
Open answer 16What are the main evidence limits for LL-37?
Describing an endogenous function does not establish that administering a manufactured product is safe or beneficial.
Open answer 17What are the main evidence limits for AOD-9604?
The existence of a large trial should not be summarized as positive evidence when the development result was not clinically persuasive.
Open answer 18What are the main evidence limits for Epitalon?
Older, geographically concentrated, or difficult-to-verify reports should not be upgraded into a general anti-aging claim.
Open answer 19What are the main evidence limits for Semax?
A published clinical study does not substitute for independent replication, transparent product characterization, and modern regulatory review.
Open answer 20What are the main evidence limits for Selank?
Active-comparator studies without broad replication do not settle comparative effectiveness or long-term safety.
Open answer 21What are the main evidence limits for DSIP?
A peptide name linked to sleep does not establish that a marketed product improves insomnia or sleep quality.
Open answer 22What are the main evidence limits for PT-141 / Bremelanotide?
An approval for Vyleesi does not validate every product sold as PT-141 or use in populations outside the label.
Open answer 23What are the main evidence limits for Melanotan II?
Visible pigmentation is a biological effect, not evidence that an unapproved product is safe, pure, or medically appropriate.
Open answer 24What are the main evidence limits for Glutathione?
Endogenous glutathione, oral supplements, topical products, and compounded injections are different evidence and risk questions.
Open answer