{"shortAnswer":"Thymalin has no approved use in the US. FDA calls Thymalin products sold online unapproved new drugs. It is a mix of peptides from the thymus gland. The evidence grade is limited-human: studies in Russia and Ukraine report gains, but most are small or old.","url":"https://peptideindex.ai/compound/thymalin","status":"no-approved-use","statusCheckedAt":"2026-10-26T13:36:26.943Z","statusStale":false,"regulatoryAsOf":"2026-10-26","verified":"2026-10-26T13:36:26.985Z","primarySourceUrl":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","clinicallyReviewed":false,"notice":"Information, not medical advice.","id":"f1bcc7a5-6ace-438c-94df-8de5fbeb081f","object":"compound","slug":"thymalin","name":"Thymalin","attrs":{"name":"Thymalin","class":"other","access":[{"type":"none","detail":"There is no legal route to Thymalin in the US today. It is in no approved drug, and FDA calls Thymalin products sold online unapproved new drugs.","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"}],"trials":[],"aliases":["Timalin"],"summary":"A mix of peptides taken from the thymus gland, not one peptide. Researchers who study it say it helps regulate the immune system.","citations":[{"n":1,"url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","tier":"primary","type":"regulatory","title":"FDA warning letter to an online seller, naming Thymalin as an unapproved new drug, 7 February 2024"},{"n":2,"url":"https://www.fda.gov/media/94155/download","tier":"primary","type":"regulatory","title":"FDA: bulk drug substances nominated under section 503A, list updated 14 May 2026"},{"n":3,"url":"https://www.fda.gov/drugs/human-drug-compounding/bulk-drug-substances-used-compounding-under-section-503a-fdc-act","tier":"primary","type":"regulatory","title":"FDA: bulk drug substances used in compounding under section 503A"},{"n":4,"url":"https://www.healthlawalliance.com/blog/fda-targets-glp-1-and-peptide-compounding-advertising-and-research-use-only-labeling","tier":"legal-analysis","type":"legal-analysis","title":"Health Law Alliance: FDA action on peptides sold as research use only"},{"n":5,"url":"https://pubmed.ncbi.nlm.nih.gov/14523363/","tier":"peer-reviewed","type":"human-trial","title":"Thymalin and Epithalamin in 266 older people over 6 to 8 years, 2003"},{"n":6,"url":"https://pubmed.ncbi.nlm.nih.gov/33575961/","tier":"peer-reviewed","type":"human-trial","title":"Thymalin added to treatment of patients with COVID-19, 2021"},{"n":7,"url":"https://pubmed.ncbi.nlm.nih.gov/2080155/","tier":"peer-reviewed","type":"human-trial","title":"Thymalin with drug treatment in 60 patients with lung tuberculosis, 1990"},{"n":8,"url":"https://pubmed.ncbi.nlm.nih.gov/10424021/","tier":"peer-reviewed","type":"human-trial","title":"Thymalin in 15 patients with parkinsonism, 1999"},{"n":9,"url":"https://pubmed.ncbi.nlm.nih.gov/29797130/","tier":"peer-reviewed","type":"animal","title":"Thymalin and a transplanted sarcoma in rats, 2018"},{"n":10,"url":"https://pubmed.ncbi.nlm.nih.gov/38431810/","tier":"peer-reviewed","type":"animal","title":"Thymalin shots and jaw bone repair in rats, 2024"},{"n":11,"url":"https://pubmed.ncbi.nlm.nih.gov/21957575/","tier":"peer-reviewed","type":"animal","title":"Thymalin and bone marrow cells in mice of different ages, 2011"},{"n":12,"url":"https://pubmed.ncbi.nlm.nih.gov/33237528/","tier":"peer-reviewed","type":"in-vitro","title":"Thymalin and human blood stem cells in a lab, 2020"},{"n":13,"url":"https://pubmed.ncbi.nlm.nih.gov/37686182/","tier":"peer-reviewed","type":"in-vitro","title":"Two short peptides in Thymalin, in cells and computer models, 2023"},{"n":14,"url":"https://pubmed.ncbi.nlm.nih.gov/35408963/","tier":"peer-reviewed","type":"in-vitro","title":"Thymalin and four other peptides in a human monocyte cell line, 2022"},{"n":15,"url":"https://pubmed.ncbi.nlm.nih.gov/24003726/","tier":"peer-reviewed","type":"reference","title":"Review of clinical studies of peptide bioregulators, including Timalin, 2013"},{"n":16,"url":"https://pubmed.ncbi.nlm.nih.gov/12687147/","tier":"peer-reviewed","type":"reference","title":"Review of immune therapies used in Russian medicine, naming thymalin, 1999"}],"known_risks":["FDA has not tested Thymalin products sold online for harm, benefit or quality [^1].","FDA warned that a seller marketed Thymalin for children. Children may react more strongly to untested drugs [^1]."],"short_answer":"Thymalin has no approved use in the US. FDA calls Thymalin products sold online unapproved new drugs. It is a mix of peptides from the thymus gland. The evidence grade is limited-human: studies in Russia and Ukraine report gains, but most are small or old.","evidence_grade":"limited-human","open_questions":["Nobody knows if Thymalin helps older people live longer. The long study of older people came from the group that developed it [^5] [^14].","Nobody knows which parts of the extract do anything. A lab study points to two tiny peptides, but it used cells and computer models [^13].","Some of the studies in people are written in Russian, with only a short English note. That makes them hard for others to check [^7] [^8].","The results in rats, mice and lab-grown cells may not hold in people [^9] [^11] [^12]."],"section_routes":"No approved drug in the US contains Thymalin, and FDA calls the products sold online unapproved new drugs [^1]. The federal list of substances pharmacies may use does not name it [^2] [^3]. There is no legal route to Thymalin in the US today.\n\nAny open trial would appear in the trials block below, with the date the official registry was last checked.","regulatory_as_of":"2026-10-26","section_channels":"One way of getting Thymalin shows up in federal records: websites that sell it as a research chemical [^1]. In 2024, FDA sent a warning letter to an online seller that offered Thymalin along with two weight-loss drugs [^1].\n\nThe seller's labels said the products were for research only and not for people [^1]. FDA said the website showed they were meant for people, so they are drugs [^1]. FDA said the Thymalin product had no approval and was misbranded [^1]. FDA was especially concerned that the seller marketed it for children [^1].\n\nA law firm reports that FDA has stepped up action against peptides labeled for research use only [^4].","section_evidence":"The evidence grade is limited-human: studies in people report gains, but most are small, old or poorly described, and the ones that name a place were run in Russia and Ukraine [^5] [^6] [^7] [^8].\n\nPeople: in a 2003 study, 266 older people were followed. Some got Thymalin, a pineal extract called Epithalamin, or both, for the first 2 to 3 years [^5]. Over 6 to 8 years, fewer people died in the treated groups than in the control group, the authors report [^5]. The study came from the group that developed Thymalin, and its summary does not say how people were put in groups [^5] [^14]. In a 2021 report, patients with COVID-19 got Thymalin on top of usual care [^6]. Blood signs of swelling and clotting fell faster [^6]. In 60 patients with lung tuberculosis, adding Thymalin to drugs shortened hospital stays, a 1990 report says [^7]. In 15 people with parkinsonism, a movement disorder, symptoms got better after a course of Thymalin [^8]. That study compared people only with themselves, before and after [^8].\n\nAnimals: in rats with a transplanted tumor, Thymalin stopped or shrank the tumor in more than half [^9]. In rats with a hole in the jaw bone, Thymalin shots given with a bone graft helped the bone heal [^10]. In old mice, it changed the mix of cells in bone marrow [^11].\n\nCells: in human stem cells in a lab, Thymalin pushed cells toward mature immune cells [^12]. In other lab tests, it lowered signals of swelling made by human blood cells [^13] [^14]. These are animal and lab results, not results in people.","regulatory_status":"no-approved-use","section_what_it_is":"Thymalin is not one peptide. It is a mix of peptides taken from the thymus [^12]. The thymus is a gland in the chest that helps train the immune system. Researchers say two very short peptides in the mix may be its active parts [^13].\n\nIt was first taken from animal tissue by a research group in Russia [^14]. Doctors in Russia use it to support the immune system [^16]. It is also spelled Timalin [^15]. Thymulin and thymosin alpha-1 are different molecules, not Thymalin.\n\nNo drug approved in the US contains it [^1].","section_is_it_legal":"Thymalin has no approved use in the US: in 2024, FDA said Thymalin products sold online are new drugs with no approved application [^1]. That means no Thymalin product may be sold as a drug. It does not mean FDA found it harmful; FDA has not reviewed it [^1]. Its use in Russia does not change its US status. Checked 26 October 2026.\n\nFDA also said those products were misbranded. Their labels could not give directions a person could follow without a doctor [^1]. A label that says \"research chemicals only\" does not change this, FDA said [^1].\n\nA pharmacy may make a drug from a bulk substance only in certain cases. One case is a substance on a list FDA keeps under section 503A of the law [^3]. FDA's list of nominated substances, updated in May 2026, does not name Thymalin [^2]. It names thymulin, a different molecule [^2].","unofficial_channels":[{"type":"research-use-seller","what_it_is":"Sold online as a research chemical, with a label saying it is not for people, while the website describes uses in people.","enforcement":[{"date":"2024-02-07","text":"FDA warning letter to an online seller of research chemicals; the letter names Thymalin as an unapproved new drug.","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"}],"legal_position":{"text":"FDA says Thymalin products sold this way are drugs, because the website shows they are meant for people. They are unapproved new drugs and misbranded.","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"},"documented_risks":[{"text":"FDA has not tested the product for harm, benefit or quality.","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"},{"text":"FDA warned that the seller marketed Thymalin for children, who may react more strongly to untested drugs.","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"}]}]},"provenance":{"name":{"fact_id":"f4c613b1-645b-491a-a883-1aa233a7c727","source_url":"https://pubmed.ncbi.nlm.nih.gov/33237528/","source_type":"peer-reviewed","captured_at":"2026-10-26T07:41:02.783Z","checked_at":"2026-10-26T13:36:26.970Z","confidence":1,"stale":false},"class":{"fact_id":"c06d1386-8d25-4233-9415-52e77b928a12","source_url":"https://pubmed.ncbi.nlm.nih.gov/33237528/","source_type":"peer-reviewed","captured_at":"2026-10-26T07:41:02.783Z","checked_at":"2026-10-26T13:36:26.974Z","confidence":1,"stale":false},"access":{"fact_id":"492f4df2-96dc-46c2-a316-93e0dc38715e","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","source_type":"primary","captured_at":"2026-10-26T07:40:26.434Z","checked_at":"2026-10-26T13:36:26.923Z","confidence":1,"stale":false},"trials":{"fact_id":"076ce093-08de-4a44-8e2b-cc17a30d0046","source_url":"https://clinicaltrials.gov/api/v2/studies?query.intr=Thymalin&filter.overallStatus=RECRUITING%2CNOT_YET_RECRUITING&pageSize=50&sort=StartDate%3Adesc&countTotal=true&fields=NCTId%2CBriefTitle%2COverallStatus%2CPhase%2CLeadSponsorName%2CStartDate%2CLocationCountry%2CLocationState","source_type":"primary","captured_at":"2026-10-26T13:36:45.372Z","checked_at":"2026-10-26T13:36:45.372Z","confidence":1,"stale":false},"aliases":{"fact_id":"96746ae2-9a38-495f-812d-e99ab30c790b","source_url":"https://pubmed.ncbi.nlm.nih.gov/24003726/","source_type":"peer-reviewed","captured_at":"2026-10-26T07:41:05.262Z","checked_at":"2026-10-26T13:36:26.972Z","confidence":1,"stale":false},"summary":{"fact_id":"bde9cf54-5368-4793-b63b-b804a8aa387a","source_url":"https://pubmed.ncbi.nlm.nih.gov/33237528/","source_type":"peer-reviewed","captured_at":"2026-10-26T07:41:02.783Z","checked_at":"2026-10-26T13:36:26.961Z","confidence":1,"stale":false},"citations":{"fact_id":"86414c71-ce9a-4dab-82db-5f70a45bdd1e","source_url":"https://pubmed.ncbi.nlm.nih.gov/33237528/","source_type":"peer-reviewed","captured_at":"2026-10-26T07:41:02.783Z","checked_at":"2026-10-26T13:36:26.984Z","confidence":1,"stale":false},"known_risks":{"fact_id":"8b976f09-2f1e-46b1-b965-87577e6f1930","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","source_type":"primary","captured_at":"2026-10-26T07:40:26.434Z","checked_at":"2026-10-26T13:36:26.968Z","confidence":1,"stale":false},"short_answer":{"fact_id":"88f506d0-6a25-492b-8336-76047e65725c","source_url":"https://peptideindex.ai/methodology#short-answer","source_type":"reference","captured_at":"2026-10-25T00:14:44.418Z","checked_at":"2026-10-26T13:36:26.976Z","confidence":1,"stale":false,"label":"our assessment"},"evidence_grade":{"fact_id":"7a4e65da-7e39-4a0d-9504-2c7b45fec126","source_url":"https://peptideindex.ai/methodology#evidence-grade","source_type":"reference","captured_at":"2026-10-25T00:14:45.193Z","checked_at":"2026-10-26T13:36:26.980Z","confidence":1,"stale":false,"label":"our assessment"},"open_questions":{"fact_id":"fb8d954e-5308-43e6-b4ed-5e7019a2928a","source_url":"https://pubmed.ncbi.nlm.nih.gov/14523363/","source_type":"peer-reviewed","captured_at":"2026-10-26T07:40:56.263Z","checked_at":"2026-10-26T13:36:26.939Z","confidence":1,"stale":false},"section_routes":{"fact_id":"b1777cb4-3ee5-47c9-8353-8cb68de9b9d9","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","source_type":"primary","captured_at":"2026-10-26T07:40:26.434Z","checked_at":"2026-10-26T13:36:26.957Z","confidence":1,"stale":false},"regulatory_as_of":{"fact_id":"cd84119b-6bc2-417c-9569-8f6bf038d679","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","source_type":"primary","captured_at":"2026-10-26T07:40:26.434Z","checked_at":"2026-10-26T13:36:26.978Z","confidence":1,"stale":false},"section_channels":{"fact_id":"3e2c4374-4542-46c4-a99b-880769f880fe","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","source_type":"primary","captured_at":"2026-10-26T07:40:26.434Z","checked_at":"2026-10-26T13:36:26.947Z","confidence":1,"stale":false},"section_evidence":{"fact_id":"2cd4bfc0-4265-48f4-946e-a4c3b0eef5ce","source_url":"https://pubmed.ncbi.nlm.nih.gov/14523363/","source_type":"peer-reviewed","captured_at":"2026-10-26T07:40:56.263Z","checked_at":"2026-10-26T13:36:26.952Z","confidence":1,"stale":false},"regulatory_status":{"fact_id":"95cf4f77-1f04-43ce-b1d8-49338ef052af","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","source_type":"primary","captured_at":"2026-10-26T07:40:26.434Z","checked_at":"2026-10-26T13:36:26.943Z","confidence":1,"stale":false},"section_what_it_is":{"fact_id":"4095a80c-fabc-4a21-9566-9e3ecd3960ab","source_url":"https://pubmed.ncbi.nlm.nih.gov/33237528/","source_type":"peer-reviewed","captured_at":"2026-10-26T07:41:02.783Z","checked_at":"2026-10-26T13:36:26.966Z","confidence":1,"stale":false},"section_is_it_legal":{"fact_id":"5e21e3f7-c422-4b01-9793-a306c9950967","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","source_type":"primary","captured_at":"2026-10-26T07:40:26.434Z","checked_at":"2026-10-26T13:36:26.981Z","confidence":1,"stale":false},"unofficial_channels":{"fact_id":"16c8a392-7ea3-4097-a18b-76e1d144d71d","source_url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024","source_type":"primary","captured_at":"2026-10-26T07:40:26.434Z","checked_at":"2026-10-26T13:36:26.985Z","confidence":1,"stale":false}},"citationsBySection":{"known_risks":[{"n":1,"title":"FDA warning letter to an online seller, naming Thymalin as an unapproved new drug, 7 February 2024","url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"}],"open_questions":[{"n":5,"title":"Thymalin and Epithalamin in 266 older people over 6 to 8 years, 2003","url":"https://pubmed.ncbi.nlm.nih.gov/14523363/"},{"n":14,"title":"Thymalin and four other peptides in a human monocyte cell line, 2022","url":"https://pubmed.ncbi.nlm.nih.gov/35408963/"},{"n":13,"title":"Two short peptides in Thymalin, in cells and computer models, 2023","url":"https://pubmed.ncbi.nlm.nih.gov/37686182/"},{"n":7,"title":"Thymalin with drug treatment in 60 patients with lung tuberculosis, 1990","url":"https://pubmed.ncbi.nlm.nih.gov/2080155/"},{"n":8,"title":"Thymalin in 15 patients with parkinsonism, 1999","url":"https://pubmed.ncbi.nlm.nih.gov/10424021/"},{"n":9,"title":"Thymalin and a transplanted sarcoma in rats, 2018","url":"https://pubmed.ncbi.nlm.nih.gov/29797130/"},{"n":11,"title":"Thymalin and bone marrow cells in mice of different ages, 2011","url":"https://pubmed.ncbi.nlm.nih.gov/21957575/"},{"n":12,"title":"Thymalin and human blood stem cells in a lab, 2020","url":"https://pubmed.ncbi.nlm.nih.gov/33237528/"}],"section_routes":[{"n":1,"title":"FDA warning letter to an online seller, naming Thymalin as an unapproved new drug, 7 February 2024","url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"},{"n":2,"title":"FDA: bulk drug substances nominated under section 503A, list updated 14 May 2026","url":"https://www.fda.gov/media/94155/download"},{"n":3,"title":"FDA: bulk drug substances used in compounding under section 503A","url":"https://www.fda.gov/drugs/human-drug-compounding/bulk-drug-substances-used-compounding-under-section-503a-fdc-act"}],"section_channels":[{"n":1,"title":"FDA warning letter to an online seller, naming Thymalin as an unapproved new drug, 7 February 2024","url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"},{"n":4,"title":"Health Law Alliance: FDA action on peptides sold as research use only","url":"https://www.healthlawalliance.com/blog/fda-targets-glp-1-and-peptide-compounding-advertising-and-research-use-only-labeling"}],"section_evidence":[{"n":5,"title":"Thymalin and Epithalamin in 266 older people over 6 to 8 years, 2003","url":"https://pubmed.ncbi.nlm.nih.gov/14523363/"},{"n":6,"title":"Thymalin added to treatment of patients with COVID-19, 2021","url":"https://pubmed.ncbi.nlm.nih.gov/33575961/"},{"n":7,"title":"Thymalin with drug treatment in 60 patients with lung tuberculosis, 1990","url":"https://pubmed.ncbi.nlm.nih.gov/2080155/"},{"n":8,"title":"Thymalin in 15 patients with parkinsonism, 1999","url":"https://pubmed.ncbi.nlm.nih.gov/10424021/"},{"n":14,"title":"Thymalin and four other peptides in a human monocyte cell line, 2022","url":"https://pubmed.ncbi.nlm.nih.gov/35408963/"},{"n":9,"title":"Thymalin and a transplanted sarcoma in rats, 2018","url":"https://pubmed.ncbi.nlm.nih.gov/29797130/"},{"n":10,"title":"Thymalin shots and jaw bone repair in rats, 2024","url":"https://pubmed.ncbi.nlm.nih.gov/38431810/"},{"n":11,"title":"Thymalin and bone marrow cells in mice of different ages, 2011","url":"https://pubmed.ncbi.nlm.nih.gov/21957575/"},{"n":12,"title":"Thymalin and human blood stem cells in a lab, 2020","url":"https://pubmed.ncbi.nlm.nih.gov/33237528/"},{"n":13,"title":"Two short peptides in Thymalin, in cells and computer models, 2023","url":"https://pubmed.ncbi.nlm.nih.gov/37686182/"}],"section_what_it_is":[{"n":12,"title":"Thymalin and human blood stem cells in a lab, 2020","url":"https://pubmed.ncbi.nlm.nih.gov/33237528/"},{"n":13,"title":"Two short peptides in Thymalin, in cells and computer models, 2023","url":"https://pubmed.ncbi.nlm.nih.gov/37686182/"},{"n":14,"title":"Thymalin and four other peptides in a human monocyte cell line, 2022","url":"https://pubmed.ncbi.nlm.nih.gov/35408963/"},{"n":16,"title":"Review of immune therapies used in Russian medicine, naming thymalin, 1999","url":"https://pubmed.ncbi.nlm.nih.gov/12687147/"},{"n":15,"title":"Review of clinical studies of peptide bioregulators, including Timalin, 2013","url":"https://pubmed.ncbi.nlm.nih.gov/24003726/"},{"n":1,"title":"FDA warning letter to an online seller, naming Thymalin as an unapproved new drug, 7 February 2024","url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"}],"section_is_it_legal":[{"n":1,"title":"FDA warning letter to an online seller, naming Thymalin as an unapproved new drug, 7 February 2024","url":"https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"},{"n":3,"title":"FDA: bulk drug substances used in compounding under section 503A","url":"https://www.fda.gov/drugs/human-drug-compounding/bulk-drug-substances-used-compounding-under-section-503a-fdc-act"},{"n":2,"title":"FDA: bulk drug substances nominated under section 503A, list updated 14 May 2026","url":"https://www.fda.gov/media/94155/download"}]},"channelsOpener":"This section describes what happens and is not a recommendation.","sources":["https://clinicaltrials.gov/api/v2/studies?query.intr=Thymalin&filter.overallStatus=RECRUITING%2CNOT_YET_RECRUITING&pageSize=50&sort=StartDate%3Adesc&countTotal=true&fields=NCTId%2CBriefTitle%2COverallStatus%2CPhase%2CLeadSponsorName%2CStartDate%2CLocationCountry%2CLocationState","https://peptideindex.ai/methodology#evidence-grade","https://peptideindex.ai/methodology#short-answer","https://pubmed.ncbi.nlm.nih.gov/14523363/","https://pubmed.ncbi.nlm.nih.gov/24003726/","https://pubmed.ncbi.nlm.nih.gov/33237528/","https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024"],"verified_at":"2026-10-26T13:36:26.985Z","published_at":"2026-10-26T13:49:26.551Z","parent":null,"children":[],"snapshots":{"trials":{"snapshot_at":"2026-10-26T13:36:45.372Z","stale":false,"notice":"A listing is not a recommendation. Trials have strict eligibility rules. Talk to your doctor and read the official record."}}}