--- title: "Peptide Answers: Sourced, Dated, Philippine Context" url: https://www.primaralabs.com/answers source: Primara Labs, markdown mirror of the HTML page --- # Questions buyers ask, answered first. As of 23 September 2026, Primara Labs publishes 48 answers to the questions Philippine buyers ask about research peptides: whether a compound is approved, what its trials found, what a lab test shows, and how ordering and delivery work. Each opens with a direct answer and cites the source of every figure. Primara Labs sells some of the compounds covered here. Every figure on this page links to its source and the date it was checked. Updated 23 September 2026 2 answers ## Trust - [Is Primara Labs legit?](https://www.primaralabs.com/answers/is-primara-labs-legit) Primara Labs is a Philippine peptide store in Makati, Metro Manila, that takes every order through WhatsApp. - [Where does Primara Labs ship from?](https://www.primaralabs.com/answers/where-does-primara-labs-ship-from) Primara Labs states that its stock is held in Metro Manila and that orders are dispatched from there, not ordered in from abroad after purchase. 5 answers ## Buying - [How do you order peptides from Primara Labs?](https://www.primaralabs.com/answers/how-do-you-order-peptides-from-primara-labs) Every Primara Labs order is placed in a WhatsApp chat; the site has no checkout. - [How much is retatrutide in the Philippines?](https://www.primaralabs.com/answers/how-much-is-retatrutide-in-the-philippines) At Primara Labs, retatrutide is ₱3,325, or ₱2,990 with 10% off for a 15mg research vial, as of 23 September 2026. - [How much is tirzepatide in the Philippines?](https://www.primaralabs.com/answers/how-much-is-tirzepatide-in-the-philippines) At Primara Labs, tirzepatide is ₱2,100, or ₱1,890 with 10% off for a 15mg research vial, as of 23 September 2026. - [Is COD available for peptide orders in Metro Manila?](https://www.primaralabs.com/answers/is-cod-available-for-peptides-in-metro-manila) Cash on delivery is available on request, subject to the conditions in our terms. - [Can peptides be delivered the same day in Metro Manila?](https://www.primaralabs.com/answers/can-peptides-be-delivered-same-day-in-metro-manila) Yes, from Primara Labs. 16 answers ## Regulation - [Is retatrutide approved in the Philippines?](https://www.primaralabs.com/answers/is-retatrutide-approved-in-the-philippines) As of 23 September 2026, retatrutide is not an approved medicine in the Philippines or anywhere else. - [When will retatrutide be approved?](https://www.primaralabs.com/answers/when-will-retatrutide-be-approved) No approval date for retatrutide exists as of 23 September 2026. - [Is tirzepatide approved in the Philippines?](https://www.primaralabs.com/answers/is-tirzepatide-approved-in-the-philippines) As of 23 September 2026, tirzepatide is approved in the United States and the European Union as branded prescription medicines. - [Is semaglutide approved in the Philippines?](https://www.primaralabs.com/answers/is-semaglutide-approved-in-the-philippines) As of 23 September 2026, semaglutide is approved in the United States and the European Union as branded prescription medicines for diabetes and weight management. - [Is BPC-157 FDA approved?](https://www.primaralabs.com/answers/is-bpc-157-fda-approved) No. - [Is TB-500 FDA approved?](https://www.primaralabs.com/answers/is-tb-500-fda-approved) No. - [Is GHK-Cu FDA approved?](https://www.primaralabs.com/answers/is-ghk-cu-fda-approved) No drug containing GHK-Cu is approved by the US FDA or the EMA as of 23 September 2026. - [Is PT-141 FDA approved?](https://www.primaralabs.com/answers/is-pt-141-fda-approved) Yes, for one named use. - [Is tesamorelin FDA approved?](https://www.primaralabs.com/answers/is-tesamorelin-fda-approved) Yes, in the United States, for one indication. - [Is NAD+ FDA approved?](https://www.primaralabs.com/answers/is-nad-plus-fda-approved) No approved drug application for NAD+ exists in Drugs@FDA as of 23 September 2026, and the EMA medicines report has no record of it either. - [Is MOTS-c FDA approved?](https://www.primaralabs.com/answers/is-mots-c-fda-approved) No. - [Are CJC-1295 and ipamorelin FDA approved?](https://www.primaralabs.com/answers/is-cjc-1295-ipamorelin-fda-approved) No. - [Is KPV approved in the Philippines?](https://www.primaralabs.com/answers/is-kpv-approved-in-the-philippines) No approval for KPV exists as of 23 September 2026. - [Which research peptides are FDA approved?](https://www.primaralabs.com/answers/which-research-peptides-are-fda-approved) Of the 16 compounds on the Primara Research Desk tracker, 4 are US FDA approved as branded medicines for named uses as of 23 September 2026: tirzepatide, semaglutide, tesamorelin, bremelanotide. - [What has FDA Philippines warned about peptides?](https://www.primaralabs.com/answers/what-has-fda-philippines-warned-about-peptides) As of 23 September 2026, FDA Philippines has published 5 public health warnings naming compounds Primara Labs tracks: unregistered tirzepatide vial products, a KPV vial and an NAD+ supplement. - [How do you check if a product is registered with FDA Philippines?](https://www.primaralabs.com/answers/how-to-check-fda-philippines-registration) FDA Philippines tells the public to check registration on its verification portal at verification.fda.gov.ph, and it keeps a separate list of health products it has found unregistered. 21 answers ## Research - [How does retatrutide work?](https://www.primaralabs.com/answers/how-does-retatrutide-work) Retatrutide is a single peptide that activates three hormone receptors at once: GIP, GLP-1 and glucagon, which its developer Eli Lilly calls a first-in-class triple agonist. - [What did the retatrutide trials find?](https://www.primaralabs.com/answers/what-did-retatrutide-trials-find) As of 23 September 2026, 5 retatrutide trials have reported. - [What are the side effects of retatrutide?](https://www.primaralabs.com/answers/what-are-the-side-effects-of-retatrutide) In TRIUMPH-1, the retatrutide phase 3 trial reported by Eli Lilly (checked 23 September 2026), nausea affected 28.6% to 42.4% of participants across the dose arms against 14.8% on placebo, and diarrhoea, constipation and vomiting were also more common. - [How does tirzepatide work?](https://www.primaralabs.com/answers/how-does-tirzepatide-work) Tirzepatide is one peptide that activates two incretin receptors, GIP and GLP-1, which is why it is called a dual agonist. - [What are the side effects of tirzepatide?](https://www.primaralabs.com/answers/what-are-the-side-effects-of-tirzepatide) In SURMOUNT-3, a phase 3 trial of tirzepatide (checked 23 September 2026), nausea was reported by 39.7% of participants against 14.0% on placebo, with diarrhoea, constipation and vomiting also more frequent. - [How does semaglutide work?](https://www.primaralabs.com/answers/how-does-semaglutide-work) Semaglutide is a modified form of the gut hormone GLP-1 that binds and activates the GLP-1 receptor, and only that receptor. - [What are the side effects of semaglutide?](https://www.primaralabs.com/answers/what-are-the-side-effects-of-semaglutide) In STEP 3, a phase 3 trial of semaglutide (checked 23 September 2026), nausea was reported by 58.2% of participants against 22.1% on placebo, and constipation, diarrhoea and vomiting were also more frequent. - [Is there human research on BPC-157?](https://www.primaralabs.com/answers/is-there-human-research-on-bpc-157) Very little. - [What are the side effects of BPC-157?](https://www.primaralabs.com/answers/what-are-the-side-effects-of-bpc-157) The honest answer is that BPC-157's side effects in people are not known. - [What is TB-500?](https://www.primaralabs.com/answers/what-is-tb-500) TB-500 is a synthetic peptide named after thymosin beta-4, a 43-amino-acid protein that binds actin in cells. - [What does GHK-Cu do in research?](https://www.primaralabs.com/answers/what-does-ghk-cu-do-in-research) GHK-Cu is a naturally occurring tripeptide that binds copper, studied for skin and wound repair. - [What is MOTS-c studied for?](https://www.primaralabs.com/answers/what-is-mots-c-studied-for) MOTS-c is a 16-amino-acid peptide encoded in mitochondrial DNA, studied in mice and cells for insulin resistance, diet-induced obesity, physical decline with age and autoimmune diabetes. - [What does research show on NAD+ injections?](https://www.primaralabs.com/answers/what-does-research-show-on-nad-injections) As of 23 September 2026, the human research on NAD+ given by injection or infusion is small. - [What did the tesamorelin trials find?](https://www.primaralabs.com/answers/what-did-tesamorelin-trials-find) In its phase 3 trials, first reported in 2007, tesamorelin reduced visceral abdominal fat measured by CT against placebo in adults with HIV and excess abdominal fat. - [How does PT-141 work?](https://www.primaralabs.com/answers/how-does-pt-141-work) PT-141 is bremelanotide, a synthetic peptide that activates melanocortin receptors, chiefly MC3R and MC4R, in the brain rather than acting on blood vessels. - [What is CJC-1295 with ipamorelin?](https://www.primaralabs.com/answers/what-is-cjc-1295-ipamorelin) CJC-1295 with ipamorelin combines two growth hormone secretagogues: CJC-1295, an analogue of growth hormone-releasing hormone, and ipamorelin, which acts on the ghrelin receptor. - [What is semax studied for?](https://www.primaralabs.com/answers/what-is-semax-studied-for) Semax is a synthetic seven-amino-acid peptide derived from a fragment of the hormone ACTH, studied mainly in Russia for recovery after stroke and for brain function. - [What is selank studied for?](https://www.primaralabs.com/answers/what-is-selank-studied-for) Selank is a synthetic seven-amino-acid peptide studied in Russia for generalised anxiety and related conditions. - [What is DSIP studied for?](https://www.primaralabs.com/answers/what-is-dsip-studied-for) DSIP, delta sleep-inducing peptide, is a nine-amino-acid peptide first isolated from rabbit blood and later studied in people for sleep and insomnia. - [What is KPV studied for?](https://www.primaralabs.com/answers/what-is-kpv-studied-for) KPV is the last three amino acids of alpha-melanocyte-stimulating hormone, studied in mice and rats for inflammatory bowel conditions, colitis-associated tumours and chemotherapy mouth ulcers. - [Which peptides have phase 3 trials?](https://www.primaralabs.com/answers/which-peptides-have-phase-3-trials) Of the 16 compounds on the Primara Research Desk Evidence Map, 5 have at least one completed phase 3 human trial as of 23 September 2026: retatrutide, tirzepatide, semaglutide, tesamorelin, bremelanotide. 4 answers ## Testing - [What does an endotoxin result on a peptide vial mean?](https://www.primaralabs.com/answers/what-does-an-endotoxin-result-mean) An endotoxin result measures bacterial endotoxin, a fragment of bacterial cell walls, in endotoxin units (EU), usually per vial. - [What is the difference between a purity test and an identity test?](https://www.primaralabs.com/answers/purity-vs-identity-testing) An identity test checks that a vial holds the compound named on the label; a purity test, usually by HPLC, measures what share of the detected material is that compound. - [How much does it cost to test a peptide?](https://www.primaralabs.com/answers/how-much-does-it-cost-to-test-a-peptide) As of 23 September 2026, laboratory price pages list an identity and purity test on one peptide from US$200, and an endotoxin test from US$175 (the low end of a quoted range), in US dollars. - [What is a blind peptide test?](https://www.primaralabs.com/answers/what-is-a-blind-peptide-test) In a blind peptide test the laboratory is not told which compound the sample should be, and has to identify it from the data.