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live116 compounds · 15 vendors listed · 7 graded · audit of 4 Nov 2026 · prices checked 4 Nov 2026independent · grades can’t be bought

peptide database · 8 graded compounds · 2 measured in people

peptides for muscle growth: what the research shows

8 graded compounds were studied for muscle, 2 of them in people. Each is graded A to F on published evidence; the ladder shows how far research got, from cell studies to approval.

body systemmuscle8 compounds studied here · 2 in people
selected systemclick a lit region to explore itdrag to rotate

studied in muscle

8 compounds
  1. SS-31measured in people$3.00/mg
  2. NAD+measured in people$0.06/mg
  3. BPC-157animal or cell studies$5.67/mg
  4. 5-Amino-1MQanimal or cell studies$1.20/mg
  5. MOTS-canimal or cell studies$3.50/mg
  6. SLU-PP-332animal or cell studies$15.00/mg
  7. TB-500animal or cell studies$6.00/mg
  8. IGF-1 LR3animal or cell studies$59.99/mg

3D anatomy: Human Reference Atlas reference organs from the NIH Visible Human Project (CC BY 4.0) and BodyParts3D, © The Database Center for Life Science (CC BY-SA 2.1 JP), fitted to each body and simplified by PeptideTech; the adapted BodyParts3D meshes are shared under the same licence. Lymph node clusters, the thyroid, joint capsules and the fat layer are drawn for orientation.

research market · not for human use

A lit region shows where studies measured an effect, not that a compound works there. Most research-market compounds are not FDA-approved.

Evidence grades come from the published literature; no vendor can pay for a grade or a ranking. Some outbound links are affiliate links; they never affect grades, scores or order.

muscle

evidence table

all 116 compounds in the database
Graded compounds studied in muscle: grade, evidence ladder, US status, body systems, price per mg and research profile
compoundgradehighest rungUS statusbody systemsfrom $/mgstudies
SS-31
elamipretide
approved somewhereFDA-approvedheartmuscle$3.00research profile
NAD+
coenzyme
small human studiesresearch onlymusclebrain & mood$0.06research profile
BPC-157
body protection compound 157
small human studiesrulemaking pendingguttendons & jointsmuscleskin & hair$5.67research profile
5-Amino-1MQ
NNMT inhibitor
animal studiesresearch onlyfat & metabolismmuscle$1.20research profile
MOTS-c
mitochondrial-derived peptide
animal studiesrulemaking pendingmusclefat & metabolism$3.50research profile
SLU-PP-332
ERR agonist
animal studiesresearch onlymusclefat & metabolism$15.00research profile
TB-500
thymosin β4 fragment
animal studiesrulemaking pendingmuscletendons & jointsheartskin & hair$6.00research profile
IGF-1 LR3
long-acting IGF-1 analogue
cell studiesresearch onlymuscle$59.99research profile

short answers

questions about peptides for muscle growth

Which peptides have been studied for muscle growth?
8 graded compounds: SS-31 (B), NAD+ (C), BPC-157 (D), 5-Amino-1MQ (D), MOTS-c (D), SLU-PP-332 (D), TB-500 (D), IGF-1 LR3 (D). Grades run from A (approved, strong human outcome data) to F (contradicted, unsafe, or identity problems).
Which peptides for muscle growth were measured in people?
2 of 8: SS-31 and NAD+. The others have animal or cell studies only for muscle.
Which peptide has the strongest evidence for muscle growth?
SS-31: grade B, highest rung approved somewhere. Accelerated approval for Barth syndrome (2025); other indications missed their endpoints.
What does a lit region on the body map mean?
That published studies measured an effect there. Mint means it was measured in people; periwinkle means animals or cells only. A lit region is not a claim that a compound works there.
Is this medical advice?
No. PeptideTech is an independent information service. Research-market compounds are sold as research chemicals and most are not approved for use in people.