Testosterone support: what peptides can and cannot do
Testosterone replacement therapy (TRT) itself is not a peptide therapy. TRT involves exogenous testosterone - either injectable, topical, or pellet forms. However, several peptides interact with the hormonal axis in ways relevant to men concerned about testosterone levels.
HCG (human chorionic gonadotropin): HCG is a peptide hormone that mimics LH (luteinizing hormone) and stimulates the testes to produce testosterone naturally. It is often used alongside TRT to maintain testicular function and fertility, or as a standalone option in men who want to support natural testosterone production without suppressing their own axis.
Kisspeptin: An upstream hormone in the reproductive axis that stimulates GnRH and subsequently LH and FSH. Used in some specialized programs for men with hypothalamic causes of low testosterone.
Enclomiphene: A selective estrogen receptor modulator (not a peptide) that stimulates the pituitary to increase LH and FSH. Often offered alongside peptide programs at men's health clinics.
A physician-supervised program will always start with testing before making any prescribing decisions about the testosterone axis. Testing typically includes total testosterone, free testosterone, LH, FSH, estradiol, SHBG, prolactin, and a comprehensive metabolic panel.
Growth hormone peptides for men: body composition and recovery
Growth hormone declines significantly in men between their 30s and 50s. Several peptides target this pathway to support body composition, recovery, and energy:
- Sermorelin: Stimulates the pituitary to release GH in a natural pulsatile pattern. One of the most commonly prescribed GH-axis peptides in men's health programs.
- Ipamorelin: A GH secretagogue with a selective mechanism - stimulates GH release with minimal effect on cortisol or prolactin. Often combined with CJC-1295 or sermorelin.
- Tesamorelin: FDA-approved for specific indications, with evidence for reducing visceral fat. Used off-label in some men's health programs for body composition.
These are compounded medications requiring a physician prescription. A blood IGF-1 test is typically used to assess baseline GH axis status and to monitor response.
Recovery-focused peptides
Men with active training schedules or injury histories often pursue peptide programs focused on tissue repair and recovery:
- BPC-157: Used for tendon, ligament, and muscle recovery. Not FDA-approved but legally prescribable as a compounded medication. Strong animal model data; limited human trials.
- TB-500 (Thymosin Beta-4): A peptide with anti-inflammatory and tissue repair properties. Also not FDA-approved; used compounded. Often paired with BPC-157 in recovery protocols.
- PT-141 (Bremelanotide): A melanocortin receptor agonist used for sexual health (see below).
For recovery-focused programs, look for clinics that clearly distinguish between physician-supervised compounded programs and unregulated "research peptide" sources.
Sexual health peptides for men
PT-141 (bremelanotide): FDA-approved as Vyleesi for women with hypoactive sexual desire disorder. Off-label use in men for erectile function is common in men's health and longevity clinics. It works centrally through melanocortin receptors rather than the vascular mechanism of PDE5 inhibitors (Viagra, Cialis), which means it can work for some men who do not respond well to those medications.
A physician consultation should assess whether PT-141 is appropriate for your situation, particularly if you have cardiovascular risk factors or hypertension, as it can transiently affect blood pressure.
Weight management for men
GLP-1 medications (semaglutide, tirzepatide) are increasingly used in men's health programs for weight management, particularly when excess weight is contributing to low testosterone, metabolic syndrome, or poor cardiovascular markers. A physician-supervised program that combines GLP-1 therapy with testosterone optimization can address multiple interconnected issues.
What a good men's health clinic looks like
The best physician-supervised men's health programs:
- Start with comprehensive lab work covering hormones, metabolic markers, and relevant peptide-specific labs (IGF-1, etc.)
- Have a named prescribing physician with verifiable credentials
- Offer a real consultation before any prescription decision
- Use licensed US compounding pharmacies (ideally 503B for injectables)
- Include follow-up labs and scheduled check-ins
- Are transparent about what is and is not FDA-approved
Find men's health and peptide clinics near you and compare programs by state. Relevant state directories: Texas clinics - California clinics - Florida clinics - Arizona clinics - Colorado clinics.
Relevant peptide guides: Sermorelin - BPC-157 - PT-141 - Semaglutide.