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PT-141 with Testosterone

Mechanism-tag overlap and published literature for PT-141 and Testosterone, pulled verbatim from each Kalios compound profile. Kalios is a literature reference, not a recommendation.

Mechanism overlap

Mechanism tags are verbatim labels on each compound's profile. Generic tags ("peptide", "small-molecule", "research-chemical") are excluded from this overlap view. Tags are descriptive — not an inference about combined effect.

PT-141 TESTOSTERONE 1 UNIQUE TAGS 2 UNIQUE TAGS 0 SHARED
PT-141 unique melanocortin-receptor-agonist
Shared none
Testosterone unique androgenprimary-male-sex-hormone

Co-administration notes from the literature

Verbatim summary text pulled from each compound's profile data. Researchers studying PT-141 and Testosterone have published these mechanism-level observations. Not a co-administration recommendation.

Evidence level: mechanistic only

Central CNS arousal pathway for men whose libido does not normalize on TRT alone. Different mechanism (MC4R central arousal vs androgen receptor peripheral).

Quick facts

PT-141

RouteSubQ as-needed
Half-life~2 hr plasma
FDA statusApproved 2019 (HSDD)
WADANot listed
Full PT-141 profile →

Testosterone

RouteIM, SubQ, transdermal, oral (undecanoate), pellet
Half-lifeNot listed
FDA statusApproved (multiple formulations)
WADABanned (S1)
Full Testosterone profile →

Literature table

Classified references from each compound profile. Click a column header to sort. Click a PMID to open PubMed. Findings are quoted verbatim from each profile's literature_summary; nothing here is added or interpreted.

Year Compound Source Finding
2022PT-141Simon JA, Kingsberg SA, Portman D, et al. Prespecified and Integrated Subgroup Analyses from the RECONNECT Phase 3 Studies of Bremelanotide. J Sex Med. 2022. PMID: 35230162. PMID 35230162human trial, Phase 3
2019PT-141Kingsberg SA, Clayton AH, Portman D, Williams LA, Krop J, Jordan R, Lucas J, Simon JA. Bremelanotide for the Treatment of Hypoactive Sexual Desire Disorder: Two Randomized Phase 3 Trials. Obstet Gynecol. 2019;134(5):899-908. PMID: 31599840. DOI: 10.1097/AOG.0000000000003500. PMID 31599840human trial, Phase 3
2021PT-141Kingsberg SA, Clayton AH, Portman D, et al. The Patient Experience of Premenopausal Women Treated with Bremelanotide for Hypoactive Sexual Desire Disorder: RECONNECT Exit Study Results. J Womens Health (Larchmt). 2021. PMID: 33538638. PMID 33538638human trial
2016PT-141Clayton AH, Althof SE, Kingsberg S, DeRogatis LR, Kroll R, Goldstein I, Kaminetsky J, Spana C, Lucas J, Jordan R, Portman DJ. Bremelanotide for female sexual dysfunctions in premenopausal women: A randomized, placebo-controlled dose-finding trial. Womens Health (Lond). 2016;12(3…human trial
2008PT-141Rosen RC, Diamond LE, Earle DC, Shadiack AM. Salvage of Sildenafil Failures With Bremelanotide: A Randomized, Double-Blind, Placebo Controlled Study. J Urol. 2008;179(3):1060-1066.human trial
PT-141ClinicalTrials.gov. Study to Evaluate the Efficacy and Safety of Bremelanotide in Premenopausal Women With Hypoactive Sexual Desire Disorder (RECONNECT 301). NCT02338960.human trial
2004PT-141Rosen RC, Diamond LE, Earle DC, Shadiack AM, Molinoff PB. Evaluation of the safety, pharmacokinetics and pharmacodynamic effects of subcutaneously administered PT-141, a melanocortin receptor agonist, in healthy male subjects and in patients with an inadequate response to Viagra… PMID 14999221human study
2003PT-141Molinoff PB, Shadiack AM, Earle D, Diamond LE, Quon CY. PT-141: a melanocortin agonist for the treatment of sexual dysfunction. Ann N Y Acad Sci. 2003;994:96-102. PMID: 12851303. PMID 12851303human study
2004PT-141Pfaus JG, Shadiack A, Van Soest T, Tse M, Molinoff P. Selective facilitation of sexual solicitation in the female rat by a melanocortin receptor agonist. Proc Natl Acad Sci U S A. 2004;101(27):10201-10204. PMID: 15226502. PMID 15226502preclinical, in vivo
2019PT-141US Food and Drug Administration. VYLEESI (bremelanotide injection) prescribing information. 2019. Reference ID: 4436693.regulatory / registry
2022PT-141Clayton AH, Kingsberg SA, Portman D, Sadiq A, Krop J, Jordan R, Lucas J, Simon JA. Safety Profile of Bremelanotide Across the Clinical Development Program. J Womens Health (Larchmt). 2022;31(2):171-182. PMID: 35147466. PMID 35147466research article
2019PT-141Dhillon S, Keam SJ. Bremelanotide: First Approval. Drugs. 2019;79(14):1599-1606. PMID: 31429064. DOI: 10.1007/s40265-019-01187-w. PMID 31429064research article
2007TestosteroneHaddad RM, Kennedy CC, Caples SM, Tracz MJ, Boloña ER, Sideras K, Uraga MV, Erwin PJ, Montori VM. Testosterone and cardiovascular risk in men: a systematic review and meta-analysis. Mayo Clin Proc. 2007;82(1):29-39. PMID: 17285783. PMID 17285783systematic review
2015TestosteroneKaminetsky J, Jaffe JS, Swerdloff RS. Pharmacokinetic Profile of Subcutaneous Testosterone Enanthate Delivered via a Novel, Prefilled Single-Use Autoinjector: A Phase II Study. Sex Med. 2015;3(4):269-279. PMID: 26797061. PMC4721027. PMID 26797061human trial, Phase 2
2018TestosteroneBhasin S, Brito JP, Cunningham GR, Hayes FJ, Hodis HN, Matsumoto AM, Snyder PJ, Swerdloff RS, Wu FC, Yialamas MA. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103(5):1715-1744. PMID: 29562364. PMID 29562364human study
2013TestosteroneFinkelstein JS, Lee H, Burnett-Bowie SA, Pallais JC, Yu EW, Borges LF, Jones BF, Barry CV, Wulczyn KE, Thomas BJ, Leder BZ. Gonadal steroids and body composition, strength, and sexual function in men. N Engl J Med. 2013;369(11):1011-1022. PMID: 24024838. PMID 24024838human study
2008TestosteroneCoviello AD, Kaplan B, Lakshman KM, Chen T, Singh AB, Bhasin S. Effects of graded doses of testosterone on erythropoiesis in healthy young and older men. J Clin Endocrinol Metab. 2008;93(3):914-919. PMID: 18160461. PMID 18160461human study
2001TestosteroneHarman SM, Metter EJ, Tobin JD, Pearson J, Blackman MR; Baltimore Longitudinal Study of Aging. Longitudinal effects of aging on serum total and free testosterone levels in healthy men. J Clin Endocrinol Metab. 2001;86(2):724-731. PMID: 11158037. PMID 11158037human study
2025TestosteroneWADA. 2025 Prohibited List. Section S1 — Anabolic Agents. World Anti-Doping Agency.regulatory / registry
2023TestosteroneLincoff AM, Bhasin S, Flevaris P, Mitchell LM, Basaria S, Boden WE, Cunningham GR, Granger CB, Khera M, Thompson IM Jr, Wang Q, Wolski K, Davey D, Kalahasti V, Khan N, Miller MG, Snabes MC, Chan A, Dubcenco E, Li X, Yi T, Huang B, Pencina KM, Travison TG, Nissen SE; TRAVERSE Stu… PMID 37326322research article
2018TestosteroneMulhall JP, Trost LW, Brannigan RE, Kurtz EG, Redmon JB, Chiles KA, Lightner DJ, Miner MM, Murad MH, Nelson CJ, Platz EA, Ramanathan LV, Lewis RW. Evaluation and Management of Testosterone Deficiency: AUA Guideline. J Urol. 2018;200(2):423-432. PMID: 29601923. PMID 29601923research article
2016TestosteroneSnyder PJ, Bhasin S, Cunningham GR, et al. Effects of Testosterone Treatment in Older Men. N Engl J Med. 2016;374(7):611-624. PMID: 26886521. PMID 26886521research article
2016TestosteroneMorgentaler A, Zitzmann M, Traish AM, Fox AW, Jones TH, Maggi M, Arver S, Aversa A, Chan JC, Dobs AS, Hackett GI, Hellstrom WJ, Lim P, Lunenfeld B, Mskhalaya G, Schulman CC, Torres LO. Fundamental Concepts Regarding Testosterone Deficiency and Treatment: International Expert Con… PMID 27313122research article
2016TestosteroneShoskes JJ, Wilson MK, Spinner ML. Pharmacology of testosterone replacement therapy preparations. Transl Androl Urol. 2016;5(6):834-843. PMID: 28078214. PMID 28078214research article

Related pair pages

More research context

Frequently asked

Have PT-141 and Testosterone been studied together?

Researchers have published mechanistic-level co-administration discussion of PT-141 and Testosterone. No human co-administration trials are catalogued in the Kalios profiles. The pair page lists each compound's classified literature; full citations sit on each individual profile.

What mechanisms do PT-141 and Testosterone share?

PT-141 and Testosterone do not share a specific mechanism tag on their Kalios profiles. They appear on the same pair page because at least one profile lists the other in its co-administration data.

What is the FDA status of PT-141 and Testosterone?

PT-141: Approved 2019 (HSDD). Testosterone: Approved (multiple formulations). FDA-status text is pulled verbatim from each compound profile. See /fda-pcac-2026.html for the broader FDA Pharmacy Compounding Advisory Committee context.

Where can I find the full research on PT-141 and Testosterone?

Full citation lists, dosing tables from the literature, reconstitution data, and the FDA / WADA status are on the individual compound profiles: the PT-141 profile and the Testosterone profile. The Kalios Stack Research Tool hub lists every compound covered.

Last updated: April 2026