Cycle-length evidence
How long did the studies actually run?
Cycle lengths and breaks circulate widely. Here is what human studies administered, for how long, and how long they followed people afterwards — and where nothing has been tested at all.
Compounds with human study durations (35)
- Afamelanotide3 study durations · FDA-approved
- Amycretin2 study durations · Investigational
- AOD-96041 study duration · Not approved — research use only
- ARA-2904 study durations · Investigational
- BPC-1574 study durations · Not approved — research use only
- Cagrilintide3 study durations · Investigational
- Cerebrolysin2 study durations · Approved outside the US
- Eloralintide1 study duration · Investigational
- IGF-1 LR31 study duration · Not approved — research use only
- Kisspeptin-542 study durations · Not approved — research use only
- L-Glutathione3 study durations · Not approved — research use only
- Liraglutide3 study durations · FDA-approved
- LL-374 study durations · Not approved — research use only
- Mazdutide3 study durations · Approved outside the US
- Methylene Blue2 study durations · FDA-approved
- MOTS-c1 study duration · Not approved — research use only
- NAD+1 study duration · Not approved — research use only
- Pancragen1 study duration · Not approved — research use only
- PEA4 study durations · Not approved — research use only
- Pemvidutide2 study durations · Investigational
- Pinealon1 study duration · Not approved — research use only
- Retatrutide3 study durations · Investigational
- Semaglutide4 study durations · FDA-approved
- SLU-PP-3321 study duration · Not approved — research use only
- SS-31 (Elamipretide)2 study durations · FDA-approved
- Survodutide2 study durations · Investigational
- TB-5005 study durations · Not approved — research use only
- Tesamorelin1 study duration · FDA-approved
- Tesofensine2 study durations · Investigational
- Thymagen1 study duration · Not approved — research use only
- Thymalin2 study durations · Not approved — research use only
- Thymosin Alpha-15 study durations · Approved outside the US
- Tirzepatide3 study durations · FDA-approved
- VIP3 study durations · Investigational
- VK27351 study duration · Investigational
No human study durations found (76)
These pages state that plainly rather than repeating figures from elsewhere.
5-Amino-1MQAbaloparatideAdamaxAdipotideApelin-13ArgirelineB7-33BPC-157 + TB-500 BlendBronchogenCardiogenCartalaxChonlutenCJC-1295 (no DAC)CJC-1295 (no DAC) + GHRP-6 BlendCJC-1295 (no DAC) + Ipamorelin BlendCJC-1295 (with DAC)CortagenDihexaDSIPDulaglutideEcnoglutideEpithalonExenatideFollistatin 344FOXO4-DRIGHK-CuGHRP-2GHRP-6GLOW BlendGonadorelinhCG (human chorionic gonadotropin)HexarelinHGH Fragment 176-191HumaninIpamorelinKisspeptin-10KLOW BlendKPVLarazotideLeuprolideLivagenMariTide (maridebart cafraglutide)MatrixylMelanotan IMelanotan IIN-Acetyl Epithalon AmidateNootropic StripsOctreotideOrforglipronOvangenOxytocinP-21PE-22-28PEG-MGFPentadeca arginate (PDA)PNC-27PramlintideProstamaxPT-141SelankSelank + Semax BlendSemaxSermorelinSetmelanotideSleep Research BlendSNAP-8TeduglutideTeriparatideTestagenThymosin beta-4ThymulinTRH (Thyrotropin)TriptorelinVasopressinVesugenVilon