If you have been reading about evidence base and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Last reviewed on 2026-06-12. Where a claim depends on a specific study, the study is described rather than over-claimed.
Direct human evidence is scarce. One trial in ulcerative colitis delivered the compound by enema and produced limited publicly reported results without a clear benefit. The compound is not an approved medicine in most jurisdictions. In many markets it is sold as a research chemical; in others it falls under prescription or controlled categories. Regulators have not confirmed any claimed medical use, and product labels rarely undergo premarket review.
Most published reports describe experiments in rodents rather than in people. These studies examine outcomes in tendons, ligaments, bone, stomach lining, and intestinal tissue. In rat and mouse models, a frequently reported effect is faster healing or reduced damage. Sample sizes are usually small, and a substantial share of the work originates from a small number of research groups. Independent replication is limited, so how far the findings extend to humans remains an open question.
Proposed mechanisms in the literature involve the nitric oxide system, vascular endothelial growth factor signaling, and epidermal growth factor receptor pathways. Some studies report changes in blood vessel formation or in inflammatory mediators, while others describe interactions with nervous tissue. Much of this evidence rests on molecular markers in cultured cells or animal models. Whether the same pathways operate the same way in humans has not been established. Authors therefore tend to describe mechanisms as hypothetical rather than settled.
Terminology in the literature is not fully standardised. Papers and product listings use BPC-157, BPC 157, and the longer phrase stable gastric pentadecapeptide BPC 157 interchangeably, and synonyms such as bepecin or PL 14736 appear in older or company-linked publications. Purity claims and reported masses can also differ between sources because peptide preparations may include counterions, residual solvents, or bound water. This variability complicates direct comparison of results across studies and makes the exact identity and grade of a given sample worth verifying. Discussions of the compound should therefore specify the source, salt form, and stated purity where those are known.
BPC-157 is a synthetic peptide composed of fifteen amino acid residues, with the sequence Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. Its name derives from body protection compound, a term used for a protein fraction identified in human gastric juice. Researchers in Zagreb first reported the pentadecapeptide in the early 1990s and described it as a stable fragment of that larger protein. The compound is also catalogued as PL 14736 and, in some commercial contexts, as bepecin. Its molecular formula is C62H98N16O22 and its monoisotopic mass is approximately 1419 daltons.
| Property | Value | Notes |
|---|---|---|
| Main study model | Rodents, rats and mice | Underpins most of the published data |
| Common routes in studies | Subcutaneous, intraperitoneal, oral | Varies with the experimental design |
| Common analytical method | Reversed-phase HPLC, LC-MS | Used for identity and purity checks |
| Human evidence base | Small | Few trials reported, with limited findings |
| Regulatory status | Varies by jurisdiction | Not an approved medicine in most places |
Laboratory research on this peptide has examined a wide and heterogeneous set of endpoints, including gastric ulcer models, tendon and ligament injury, wound closure, and intestinal inflammation. Most published findings come from rodent studies, and reported effect sizes are often large relative to controls. Because the compound has been tested across many unrelated injury models, the literature is frequently described as unusually broad for a single peptide. A substantial share of this work originates from a small number of research groups, which matters when assessing how widely results have been reproduced.
Evidence in humans is limited. Small clinical studies have examined the peptide in contexts such as ulcerative colitis and wound healing, but participant numbers are small and independent replication is scarce. It is not approved as a medicine by major regulatory agencies and is distributed mainly as a research material or compounded preparation. Long-term human safety data are not established, and questions about absorption through non-injected routes remain open rather than resolved. Claims about its effects are best read against these gaps.
BPC-157 is a synthetic peptide of fifteen amino acids, written in single-letter code as GEPPPGKPADDAGLV. The sequence corresponds to a partial fragment of a protein isolated from human gastric juice, described in early reports as body protection compound. The number 157 refers to a fragment designation in that work rather than to molecular mass. Initial descriptions appeared in the early 1990s, when the fragment was reported to protect gastrointestinal tissue in animal models. Commercial material is produced by solid-phase peptide synthesis rather than extracted from biological sources.
Identity and purity are usually assessed with reversed-phase high-performance liquid chromatography, often paired with mass spectrometry using electrospray or MALDI ionisation. Amino acid analysis and peptide mapping by enzymatic digestion provide additional sequence-level confirmation. Purity is commonly reported as an area percentage from a chromatographic trace, and water content can be measured by Karl Fischer titration. Reported masses may differ by tens of daltons between sources because preparations can contain acetate or trifluoroacetate counterions, and such differences are not by themselves evidence of a different peptide.
BPC-157 is normally distributed as a lyophilised powder that ranges from white to off-white in appearance. The peptide dissolves readily in water, normal saline, and common aqueous buffers, and it is poorly soluble in nonpolar solvents such as hexane or vegetable oils. Lyophilised vials take up moisture if left open, which changes the mass of powder in the container and complicates any later weighing. Because the material is handled in small quantities, static and adhesion to glass or plastic can also cause noticeable losses during transfer.
=== Other peptides === B-type Natriuretic Peptide (BNP) – produced in the myocardium and useful in medical diagnosis Lactotripeptides – Lactotripeptides might reduce blood pressure, although the evidence is mixed. Peptidic components from traditional Chinese medicine Colla Corii Asini in hematopoiesis. Jelleine – produced from royal jelly of honey bees.
=== Brand names === It is marketed under the brand name Rivotril by Roche in Argentina, Australia, Austria, Bangladesh, Belgium, Brazil, Canada, Colombia, Costa Rica, Croatia, the Czech Republic, Denmark, Estonia, Germany, Hungary, Iceland, Ireland, Italy, China, Mexico, the Netherlands, Norway, Portugal, Peru, Pakistan, Romania, Serbia, South Africa, South Korea, Saudi Arabia, Spain, Turkey, and the United States; Emcloz, Linotril, Lonazep, Clotrin and Clonotril in India and other parts of Europe; under the name Riklona in Indonesia and Malaysia; and under the brand name Klonopin by Roche in the United States. Other names, such as Antelepsin, Clonoten, Ravotril, Rivotril, Iktorivil, Clonex (Israel), Paxam, Petril, Naze, Zilepam and Kriadex, are used throughout the world. In August 2021, Roche Australia transferred Rivotril to Pharmaco Australia Ltd.
=== Film samples === A sample taken from The Picture of Dorian Gray was included on the first album. A sample featured on Leaving Paris came from a Belgian documentary titled Allô Police. A "key moment" featuring children singing in the film The Night of the Hunter served as the opening track for the album Hope /// Dope /// Rope. The instrumental track that closes this album contains a speech by Joe Coleman on Ebola, crimes, and other topics. A sample from a Belgian news report in which a person discussed their tattoos appears on This Is Not Supposed To Be Positive. The last song of This Is Not Supposed To Be Positive sampled a passage from the 1969 film Paris interdit (lit. 'Paris Forbidden'), with the band stating in December 2015 that "it takes on full meaning" following the events in Paris. They incorporated French language samples into their own music. During the recording of This Is Not Supposed To Be Positive, Hangman's Chair wanted to sample a passage from Patrick Deval's film Acéphale, in which a character recites the text of La conjuration sacrée (lit. 'The Sacred Conjuration'), taken from the first issue of Georges Bataille's periodical Acéphale (1936). However, the band kept it as a concert outro and later used it in "Full Ashtray", the closing song on Banlieue Triste. They also sampled a passage from Story of a Junkie.
=== Child exploitation in Kenya === An investigation in 2025 found that TikTok was profiting from sexual livestreams in Kenya involving minors, with teenagers as young as 15 using the platform to solicit explicit content. Women in Kenya reported earning money through TikTok Lives, where coded sexual slang and emoji gifts facilitated transactions, with explicit content often delivered via other platforms. TikTok takes a 70% cut of these livestream earnings and has been aware of child exploitation since at least 2022. Many moderators say the company's content policies are ineffective, and digital pimps exploit underage users on the large. Kenya lacks adequate moderation, and TikTok denies any sort of wrongdoing. In response to the exposé, Kenya's Communications Authority (CA) launched a formal inquiry, directing TikTok to remove all sexual content involving minors and submit a detailed plan to strengthen its moderation and child protection systems.
A sustained-release tablet formulation of oral micronized progesterone (also known as "oral natural micronized progesterone sustained release" or "oral NMP SR") is marketed in India under the brand names Lutefix Pro (CROSMAT Technology), Dubagest SR, Gestofit SR, and Susten SR, among many others. In addition to single-drug formulations, the following progesterone combination formulations are or have been marketed, albeit with limited availability:
Sources: en.wikipedia.org
These terminals are near the city center—along the Metro's Line 5 or near it—and connect to it via a metro line. Each station handles trains from different parts of Europe and Asia. Moscow contains many smaller railway stations. Because tickets are inexpensive, trains are Russians' preferred mode of travel, especially when traveling to Saint Petersburg. Moscow is the western terminus of the Trans-Siberian Railway, which crosses nearly 9,300 kilometers (5,800 mi) of Russian territory to reach Vladivostok on the Pacific coast. Suburbs and satellite cities are connected by a commuter elektrichka (electric rail) network. Elektrichkas depart from each of these terminals to the nearby large railway stations (up to 140 kilometers or 87 miles away). During the 2010s, the Little Ring of the Moscow Railway was converted for frequent passenger service. This ring is fully integrated with the Moscow Metro; passenger service started on 10 September 2016. A connecting railway line on the city's north side connects the Belorussky terminal with other railway lines. This line is used by some suburban trains.
The ascorbate-glutathione cycle, sometimes Foyer-Halliwell-Asada pathway, is a metabolic pathway that detoxifies hydrogen peroxide (H2O2), a reactive oxygen species that is produced as a waste product in metabolism. The cycle involves the antioxidant metabolites: ascorbate, glutathione and NADPH and the enzymes linking these metabolites. In the first step of this pathway, H2O2 is reduced to water by ascorbate peroxidase (APX) using ascorbate (ASC) as the electron donor. The oxidized ascorbate (monodehydroascorbate, MDA) is regenerated by monodehydroascorbate reductase (MDAR). However, monodehydroascorbate is a radical and if not rapidly reduced it disproportionates into ascorbate and dehydroascorbate (DHA). Dehydroascorbate is reduced to ascorbate by dehydroascorbate reductase (DHAR) at the expense of GSH, yielding oxidized glutathione (GSSG). Finally GSSG is reduced by glutathione reductase (GR) using NADPH as the electron donor. Thus ascorbate and glutathione are not consumed; the net electron flow is from NADPH to H2O2. The reduction of dehydroascorbate may be non-enzymatic or catalysed by proteins with dehydroascorbate reductase activity, such as glutathione S-transferase omega 1 or glutaredoxins. In plants, the glutathione-ascorbate cycle operates in the cytosol, mitochondria, plastids and peroxisomes. Since glutathione, ascorbate and NADPH are present in high concentrations in plant cells it is assumed that the glutathione-ascorbate cycle plays a key role for H2O2 detoxification.
== Health hazards == Several chemical substances have been found to be effective in skin whitening, but some have been proven or suspected to be toxic. This includes compounds containing mercury, which can cause neurological and kidney problems. These products also contain collagen, which can be harmful to the skin. It is present in day creams and beauty masks. Collagen is an insoluble fibrous protein that is too large to penetrate the skin, thus it can clog pores. The use of these products can be hazardous to health, potentially causing acne, stretch marks, skin cancer, hypertension, or diabetes, especially when the product contains hydroquinone, mercury, cortisone, or vitamin A. Allergic reactions or undesirable effects, such as uneven hyperpigmentation or patchy depigmentation, can also occur. Among the ingredients, hydroquinone is also commonly found and is responsible for multiple side effects. It can interfere with the reagents used in capillary blood glucose meters, artificially raising blood glucose levels. In 1997, in Paris, the French police dismantled a network involved in the illegal trafficking of skin lightening products, primarily targeting Congolese migrants. Such products represent a significant market despite their health risks. Users resort to preparations containing mercury or bleach, or products containing corticosteroids or quinine. The Saint-Louis Hospital in Paris had to establish a specialized department to deal with the skin disorders caused by skin bleaching.
=== Aortic stenosis === Treatment of aortic stenosis is not necessary in asymptomatic patients, unless the stenosis is classified as severe based on valve hemodynamics. Both asymptomatic severe and symptomatic aortic stenosis are treated with aortic valve replacement (AVR) surgery. AVR surgery can be performed using mechanical or tissue valves depending on age and other relevant factors. Trans-catheter Aortic Valve Implantation (TAVI) is an alternative to AVR and is recommended in high risk patients who may not be suitable for surgical AVR. Any angina is treated with short-acting nitrovasodilators, beta-blockers and/or calcium blockers, although nitrates can drastically decrease blood pressure in patients with severe aortic stenosis and are therefore contraindicated. Any hypertension is treated aggressively, but caution must be taken in administering beta-blockers. Any heart failure is treated with digoxin, diuretics, nitrovasodilators and, if not contraindicated, cautious inpatient administration of ACE inhibitors. Moderate stenosis is monitored with echocardiography every 1–2 years, possibly with supplementary cardiac stress test. Severe stenosis should be monitored with echocardiography every 3–6 months.
Sources: en.wikipedia.org
Animal experiments form the bulk of the published record. Rodent models of tendon, ligament, bone, and gut injury are the most common designs. Controlled human trials are rare, which limits confidence in any clinical claim.
They are best described as working hypotheses. Supporting data come mainly from cell cultures and animal tissue, using markers such as growth factors and inflammatory signals. Confirmatory human studies have not been reported.
Status depends on the country. In some places it is treated as a research chemical available without a prescription, while elsewhere it falls under prescription or controlled rules. It holds no general marketing approval as a therapeutic product.
BPC-157 is a synthetic fifteen-amino-acid peptide whose sequence corresponds to a fragment of a protein found in human gastric juice. It is studied mainly in preclinical research and is not an approved pharmaceutical product in major markets. Materials sold for laboratory use are typically labelled as research chemicals.