Clinical-trials tracker

How much human testing each peptide is actually getting: total registered studies, how many are recruiting, how many are still active, and how many have finished — with the highest phase reached. The metabolic peptides dominate; most research peptides have a handful of trials or none.

Data as of September 11, 2026 ·15,760 trials across 78 compounds

15,760trials tracked
78compounds in trials
1,444recruiting now
40notable open studies

Search a compound

78 compounds shown

Trial counts per compound. Click a column heading to sort.
Compound	Total	Recruiting	Active	Completed	Top phase
L-TyrosineAmino acid	2,084	63	26	8	Phase 4
L-PhenylalanineAmino acid	1,071	60	24	14	Phase 4
GABAAmino acid	1,053	45	6	42	Phase 4
L-SerineAmino acid	832	61	11	19	Phase 4
L-ArginineAmino acid	779	49	10	35	Phase 4
SemaglutidePeptide · Incretin / metabolic	749	61	19	20	Phase 4
L-CysteineAmino acid	718	48	13	33	Phase 4
NAC (N-acetylcysteine)Amino acid	671	45	16	30	Phase 4
L-DOPA (levodopa)Amino acid	617	47	13	38	Phase 4
LiraglutidePeptide · Incretin / metabolic	514	32	11	43	Phase 4
L-ValineAmino acid	440	42	6	34	Phase 4
ExenatidePeptide · Incretin / metabolic	378	13	6	56	Phase 4
AlanineAmino acid	363	52	21	22	Phase 4
CreatineAmino acid	357	51	4	42	Phase 4
L-LeucineAmino acid	316	55	8	28	Phase 3
L-Carnitine / ALCARAmino acid	310	28	13	43	Phase 4
L-GlutamineAmino acid	288	34	3	39	Phase 4
TirzepatidePeptide · Incretin / metabolic	282	75	10	15	Phase 4
GlutathioneAmino acid	269	32	13	42	Phase 4
NAD+Peptide · Longevity / mitochondrial	264	59	6	30	Phase 4
GlycineAmino acid	244	26	10	47	Phase 4
L-LysineAmino acid	214	25	12	42	Phase 4
L-MethionineAmino acid	210	26	11	42	Phase 4
HomocysteineAmino acid	187	20	1	52	Phase 4
L-TryptophanAmino acid	174	35	7	43	Phase 4
L-ProlineAmino acid	173	23	3	43	Phase 4
L-CitrullineAmino acid	160	20	2	58	Phase 4
L-Glutamic acidAmino acid	158	16	17	37	Phase 4
TaurineAmino acid	154	22	8	50	Phase 4
L-HistidineAmino acid	142	27	7	40	Phase 4
DulaglutidePeptide · Incretin / metabolic	140	19	5	63	Phase 4
L-OrnithineAmino acid	124	18	10	50	Phase 4
L-ThreonineAmino acid	114	21	9	43	Phase 4
Aspartic acidAmino acid	105	15	7	58	Phase 4
Beta-alanineAmino acid	86	13	7	53	Phase 4
Betaine (TMG)Amino acid	80	14	3	47	Phase 4
SAMeAmino acid	69	11	2	42	Phase 4
Thymosin alpha-1Peptide · Immune / antimicrobial	64	19	2	23	Phase 4
L-IsoleucineAmino acid	60	11	3	31	Phase 4
L-TheanineAmino acid	54	9	0	42	Phase 4
CarnosineAmino acid	53	2	1	36	Phase 4
OrforglipronPeptide · Incretin / metabolic	53	14	8	31	Phase 4
CagrilintidePeptide · Incretin / metabolic	43	10	7	24	Phase 3
CerebrolysinPeptide · Nootropic / mental-health	42	7	1	19	Phase 4
MazdutidePeptide · Incretin / metabolic	41	21	2	17	Phase 4
RetatrutidePeptide · Incretin / metabolic	33	2	10	21	Phase 3
CagriSemaPeptide · Incretin / metabolic	30	5	5	18	Phase 3
5-HTPAmino acid	29	7	0	18	Phase 4
LarazotidePeptide · Healing / recovery	29	1	2	22	Phase 3
SermorelinPeptide · GH secretagogues	27	1	0	21	Phase 4
SetmelanotidePeptide · Melanocortin	27	3	2	19	Phase 4
SurvodutidePeptide · Incretin / metabolic	26	5	3	18	Phase 3
TesamorelinPeptide · GH secretagogues	24	3	0	14	Phase 4
Melanotan I (afamelanotide)Peptide · Melanocortin	23	0	1	18	Phase 3
DefensinsPeptide · Immune / antimicrobial	22	1	0	7	Phase 4
SS-31 (elamipretide)Peptide · Longevity / mitochondrial	21	2	2	14	Phase 4
LL-37Peptide · Immune / antimicrobial	20	2	0	12	Phase 3
VIP (vasoactive intestinal peptide)Peptide · Healing / recovery	19	0	1	13	Phase 4
Thymosin beta-4Peptide · Healing / recovery	18	3	0	11	Phase 3
FollistatinPeptide · GH secretagogues	15	2	1	11	Phase 4
AsparagineAmino acid	14	1	2	9	Phase 3
TesofensinePeptide · Incretin / metabolic	13	0	0	11	Phase 2
Citrulline malateAmino acid	11	0	1	6	Phase 2
HydroxyprolineAmino acid	10	0	0	6	Phase 4
PT-141 (bremelanotide)Peptide · Melanocortin	10	0	1	9	Phase 4
MK-677 (ibutamoren)Peptide · GH secretagogues	8	1	0	5	Phase 3
Argireline (acetyl hexapeptide-8)Peptide · Cosmetic / skin	6	0	0	5	Phase 3
MOTS-cPeptide · Longevity / mitochondrial	5	3	1	0	Phase 2
ARA-290 (cibinetide)Peptide · Healing / recovery	4	0	0	2	Phase 2
BPC-157Peptide · Healing / recovery	4	2	0	1	Phase 2
HumaninPeptide · Longevity / mitochondrial	3	1	0	1	N/A
IpamorelinPeptide · GH secretagogues	3	0	1	2	Phase 2
SelankPeptide · Nootropic / mental-health	2	0	0	1	N/A
CJC-1295Peptide · GH secretagogues	1	0	0	0	Phase 2
GHK-CuPeptide · Cosmetic / skin	1	1	0	0	Phase 2
Melanotan IIPeptide · Melanocortin	1	1	0	0	Phase 2
SelenocysteineAmino acid	1	0	0	1	Phase 1
TB-500Peptide · Healing / recovery	1	1	0	0	Phase 2

What's actively recruiting right now

These studies are open and enrolling as of the date above — the leading edge of peptide research. Retatrutide and the other incretin drugs are running large Phase 3 programs; a few research peptides (BPC-157 among them) have small early-phase trials underway. Each links to its ClinicalTrials.gov record.

Open, actively-recruiting trials, most-advanced phase first.
Compound	Phase	Status	Study	Sponsor	Primary completion
GABA	Phase 4	Recruiting	NCT07813026Abuse Potential of Gabapentin Taken Orally Concomitantly With Oxycodone Hydrochloride in Healthy, Non-Drug-Dependent, Recreational Opioid Users	Viatris Inc.	Jan 31, 2027
L-Serine	Phase 4	Recruiting	NCT06010628Tenecteplase for Acute Ischemic Stroke Within 4.5 to 6 Hours of Onset (EXIT-BT2)	General Hospital of Shenyang Military Region	Dec 15, 2029
Semaglutide	Phase 4	Recruiting	NCT06132477Impact GLP-1 Agonists Following Bariatric	University of Missouri-Columbia	Jul 2028
L-DOPA (levodopa)	Phase 4	Not yet recruiting	NCT07806019Metformin in Parkinson's Disease: Safety and Efficacy	Jinnah Medical & Dental College	Feb 1, 2027
Tirzepatide	Phase 4	Recruiting	NCT07247084A Study of Tirzepatide (LY3298176) Compared With Standard of Care in Adult Participants With Obesity and Without Diabetes (SURMOUNT-REAL UK)	Eli Lilly and Company	Jul 2029
Tirzepatide	Phase 4	Recruiting	NCT06864026A Study to Investigate Effectiveness of Tirzepatide Following Initiation of Ixekizumab in Participants With Active Psoriatic Arthritis and Overweight or Obesity in Clinical Practice (TOGETHER AMPLIFY-PsA)	Eli Lilly and Company	Nov 2027
Tirzepatide	Phase 4	Recruiting	NCT06857942A Study to Investigate the Effectiveness of Tirzepatide (LY3298176) Following Initiation of Ixekizumab (LY2439821) in Participants With Moderate-to-Severe Plaque PsO and Obesity or Overweight in Clinical Practice (TOGETHER AMPLIFY-PsO)	Eli Lilly and Company	May 2028
L-DOPA (levodopa)	Phase 4	Recruiting	NCT06234995Cortical Electrophysiology of Response Inhibition in Parkinson's Disease	Emory University	Sep 2027
L-Phenylalanine	Phase 4	Recruiting	NCT06234995Cortical Electrophysiology of Response Inhibition in Parkinson's Disease	Emory University	Sep 2027
L-Tyrosine	Phase 4	Recruiting	NCT06234995Cortical Electrophysiology of Response Inhibition in Parkinson's Disease	Emory University	Sep 2027
Taurine	Phase 4	Recruiting	NCT06269627Temporally-Resolved Electrophysiology of Acamprosate Treatment of Alcohol Use Disorder	National Institute on Alcohol Abuse and Alcoholism (NIAAA)	Dec 31, 2026
L-Histidine	Phase 4	Recruiting	NCT06799494HPV Vaccine Reduced Dose	Emory University	Sep 2028
Orforglipron	Phase 4	Not yet recruiting	NCT07739537PATHS-T2D: A Recall-by-Genotype Study of Physiologic and Pharmacologic Responses	Massachusetts General Hospital	Sep 30, 2029
L-DOPA (levodopa)	Phase 4	Not yet recruiting	NCT07793461Gastrointestinal Dopamine Decarboxylase and Levodopa Pharmacokinetics	Beth Israel Deaconess Medical Center	Jul 2030
L-Phenylalanine	Phase 4	Not yet recruiting	NCT07793461Gastrointestinal Dopamine Decarboxylase and Levodopa Pharmacokinetics	Beth Israel Deaconess Medical Center	Jul 2030
L-Tyrosine	Phase 4	Not yet recruiting	NCT07793461Gastrointestinal Dopamine Decarboxylase and Levodopa Pharmacokinetics	Beth Israel Deaconess Medical Center	Jul 2030
Mazdutide	Phase 4	Not yet recruiting	NCT07657676Effect of Mazdutide on Coronary Plaque in Patients With Coronary Atherosclerosis and Overweight or Obesity	China National Center for Cardiovascular Diseases	Dec 31, 2027
Tirzepatide	Phase 4	Recruiting	NCT07191873Tirzepatide in Idiopathic Intracranial Hypertension Trial	Duke University	Aug 2027
L-Serine	Phase 4	Recruiting	NCT06379724Burn Study- Tranexamic Acid Versus Thrombin in Split Thickness Skin Graft	University of Kansas Medical Center	Dec 2027
Tirzepatide	Phase 4	Recruiting	NCT07154719GLP-1R Actions on Muscle and the Skeleton	Pennington Biomedical Research Center	Feb 1, 2027
Semaglutide	Phase 4	Not yet recruiting	NCT07783854A Randomized Controlled Study of Dose-tapering Regimen of Semaglutide for Weight-Loss Maintenance in Adults With Overweight or Obesity	Union Hospital, Tongji Medical College, Huazhong University of Science and Technology	Dec 30, 2027
Tirzepatide	Phase 4	Recruiting	NCT07554638Incretin Therapies in Obesity-related HFpEF	Columbia University	Apr 2029
Glycine	Phase 4	Not yet recruiting	NCT07485062Exercise and Diabetes Interventions to Improve Brain Health in Older Adults With Type 2 Diabetes	Western University, Canada	May 1, 2029
L-DOPA (levodopa)	Phase 4	Recruiting	NCT06013956Personalized Real-Time DBS and PD Mechanisms	David Escobar	Jun 30, 2028
Mazdutide	Phase 4	Not yet recruiting	NCT07775846QUARTET-DKD: Quadruple Therapy for Type 2 Diabetic Nephropathy	Huijie Zhang	Feb 28, 2029
Semaglutide	Phase 4	Not yet recruiting	NCT07485062Exercise and Diabetes Interventions to Improve Brain Health in Older Adults With Type 2 Diabetes	Western University, Canada	May 1, 2029
Tirzepatide	Phase 4	Not yet recruiting	NCT07777575Resistance Training to Prevent Muscle Loss During Treatment With Tirzepatide	Technical University of Munich	May 31, 2027
GABA	Phase 4	Not yet recruiting	NCT07288528A 2x2 Factorial, Randomized, Open-label Trial to Evaluate Neuromodulators and Cough Control Therapy in Patients With Refractory or Unexplained Chronic Cough	McMaster University	Sep 1, 2029
Semaglutide	Phase 4	Not yet recruiting	NCT07770152Semaglutide in Youth With Autism Spectrum Disorder	Children's Hospital Medical Center, Cincinnati	Sep 1, 2028
Tirzepatide	Phase 4	Recruiting	NCT07218445The Effect of Tirzepatide on Menopausal Vasomotor Symptoms and Biological Aging in Post-menopausal Women With Obesity	Mayo Clinic	Sep 18, 2027
Semaglutide	Phase 4	Not yet recruiting	NCT07769047Semaglutide and Structured Lifestyle Support to Improve Heart and Blood Vessel Health in Postmenopausal Obese Breast Cancer Survivors Taking Aromatase Inhibitors	Mayo Clinic	Jul 30, 2031
L-Tyrosine	Phase 4	Not yet recruiting	NCT07760922Tirofiban Combined With Aspirin in Moderate Ischemic Stroke	Xinqiao Hospital of Chongqing	Dec 31, 2028
Liraglutide	Phase 4	Recruiting	NCT03883412Effect of Exercise and/or Liraglutide on Vascular Dysfunction and Insulin Sensitivity in Type 2 Diabetes ( ZQL007)	University of Virginia	Jun 2027
Semaglutide	Phase 4	Recruiting	NCT07178145Epicardial Adipose Tissue Composition and Heart Failure With Preserved Ejection Fraction	University of Virginia	Sep 2029
L-Serine	Phase 4	Recruiting	NCT05839652Treatment of Orthostatic Hypotension in SCI	James J. Peters Veterans Affairs Medical Center	Jun 30, 2027
Semaglutide	Phase 4	Not yet recruiting	NCT07755085GLP-1s in Hip and Knee Arthroplasty	Nova Scotia Health Authority	Jun 1, 2028
Semaglutide	Phase 4	Recruiting	NCT07275697Waiting on Atrial Fibrillation Intervention Therapy (WAIT) Study	Emma Svennberg	Dec 30, 2028
Tirzepatide	Phase 4	Not yet recruiting	NCT07756359Tirzepatide for Ileal Pouch-anal Anastomosis (IPAA) and Chronic High Bowel Frequency (I8F-NS-X008)	University of North Carolina, Chapel Hill	Sep 2027
GABA	Phase 4	Enrolling (invitation)	NCT07750639Reducing Opioid Use After Upper Extremity Surgery: Testing Lower Prescriptions and Pill Quantity	AdventHealth	Sep 30, 2026
L-Serine	Phase 4	Enrolling (invitation)	NCT07643493CleaRRAflow: Isotonic Solution vs. TPA for IVH Clearance	David Dornbos	May 31, 2028

How this tracker is built

Counts come from the ClinicalTrials.gov API (v2), queried by intervention name for each compound. Total is every registered study; recruitingcounts those actively enrolling; active means underway but no longer recruiting; completed means the study has finished. A compound with zero trials simply isn't listed here — an honest gap, not a hidden row. The table refreshes whenever the site rebuilds, so the "as of" date is the real freshness.