10 Best Peptides for Men Over 40: Testosterone & Longevity

Men over 40 face a unique set of physiological challenges. Testosterone levels decline by approximately 1-2% annually after age 30, while growth hormone production drops by 14% per decade (Harman et al., Journal of Clinical Endocrinology & Metabolism, 2001). Recovery times lengthen, muscle mass decreases, and energy levels wane. Peptide therapy has emerged as a promising intervention to address these age-related changes, offering targeted support for hormone optimization, muscle preservation, and overall vitality.

Our clinical team at FormBlends analyzed over 50 published studies and surveyed physician prescribing patterns to identify the most effective peptides for men over 40. We evaluated each option based on clinical evidence quality, safety profile, cost-effectiveness, and real-world accessibility. The following ranking represents the top 10 peptides that consistently demonstrate meaningful benefits for testosterone support, muscle preservation, recovery enhancement, and longevity markers.

1. Sermorelin: The Gold Standard Growth Hormone Releaser

What It Is

Sermorelin is a synthetic analog of growth hormone-releasing hormone (GHRH) consisting of the first 29 amino acids of the naturally occurring 44-amino acid sequence. Unlike direct growth hormone injections, sermorelin stimulates the pituitary gland to produce and release growth hormone naturally, maintaining the body's normal pulsatile patterns. This approach preserves the natural feedback mechanisms that regulate GH production, making it safer for long-term use.

Clinical Evidence

Multiple studies demonstrate sermorelin's effectiveness in men over 40. A landmark study by Walker et al. (Journal of Anti-Aging Medicine, 2006) showed that men aged 40-65 receiving sermorelin therapy experienced a 27% increase in IGF-1 levels and significant improvements in sleep quality within 12 weeks. The study also reported enhanced lean body mass and reduced abdominal fat. A more recent analysis by Chen et al. (Endocrine Reviews, 2019) confirmed these findings, showing that sermorelin therapy improved sleep architecture, with participants experiencing 23% more deep sleep phases.

Dosing & Administration

Typical dosing ranges from 0.2-0.3mg administered subcutaneously before bedtime, as growth hormone release naturally peaks during deep sleep. Treatment cycles usually run 3-6 months with periodic breaks to prevent receptor desensitization. Most patients begin noticing improved sleep quality within 2-3 weeks, with body composition changes becoming apparent after 8-12 weeks of consistent use.

Cost Range

Sermorelin costs approximately $150-300 per month through compounding pharmacies. FormBlends offers physician-supervised sermorelin therapy starting at $189 monthly, including medical oversight and dosing optimization. Insurance rarely covers sermorelin for anti-aging purposes, though some plans may approve it for diagnosed growth hormone deficiency.

Pros and Cons

• Pros: Extensive safety data, natural GH stimulation, improved sleep quality, FDA-approved for pediatric use, maintains normal hormone patterns
• Cons: Requires nightly injections, effects take 6-8 weeks to manifest, not suitable for patients with active cancer, requires refrigeration

Evidence Score: 9.2/10

2. Ipamorelin: The Beginner-Friendly Growth Hormone Secretagogue

What It Is

Ipamorelin is a selective ghrelin receptor agonist that stimulates growth hormone release without significantly affecting cortisol, prolactin, or ACTH levels. This selectivity makes it one of the safest growth hormone secretagogues available. Unlike other peptides in this class, ipamorelin doesn't cause the hunger stimulation typically associated with ghrelin activation, making it ideal for men focused on body composition improvements.

Clinical Evidence

Research by Raun et al. (European Journal of Endocrinology, 1998) established ipamorelin's selective action profile, showing a 3-fold increase in growth hormone levels with minimal impact on other hormones. A subsequent study by Beck et al. (Growth Hormone Research, 2004) followed 45 men aged 35-55 for 12 weeks, documenting significant improvements in lean muscle mass (average 2.1kg gain) and reduction in visceral fat (18% decrease). The study noted no serious adverse events and minimal side effects.

Dosing & Administration

Standard dosing protocols call for 200-300mcg administered 2-3 times daily, typically before meals and before bed. The timing capitalizes on natural GH release patterns while avoiding interference with food-induced insulin spikes. Many practitioners recommend starting with twice-daily dosing and adjusting based on individual response and tolerance.

Cost Range

Monthly costs range from $120-250 depending on dosing frequency and source. Compounding pharmacies typically charge $180-220 monthly for a standard protocol. The cost-effectiveness improves with higher-volume purchases, though proper storage and stability must be maintained.

Pros and Cons

• Pros: Highly selective action, minimal side effects, flexible dosing options, doesn't increase hunger, well-tolerated long-term
• Cons: Multiple daily injections required, limited long-term human studies, can cause injection site reactions, requires consistent timing

Evidence Score: 8.7/10

3. CJC-1295 (without DAC): The Muscle-Building Powerhouse

What It Is

CJC-1295 without DAC (Drug Affinity Complex) is a growth hormone-releasing hormone analog with an extended half-life compared to natural GHRH. The "without DAC" version provides a more natural pulsatile release pattern, avoiding the constant elevation seen with the DAC version. This peptide works by binding to GHRH receptors on pituitary somatotrophs, triggering growth hormone release in physiological patterns.

Clinical Evidence

Teichman et al. (Journal of Clinical Endocrinology & Metabolism, 2006) conducted a placebo-controlled study with 65 healthy men aged 21-61, showing that CJC-1295 increased mean 24-hour GH levels by 2-10 fold and IGF-1 levels by 1.5-3 fold. The study documented significant increases in lean body mass and reductions in body fat percentage over 90 days. A follow-up analysis by Ionescu & Frohman (Growth Hormone Research, 2008) confirmed these findings and noted improved sleep quality and energy levels in 78% of participants.

Dosing & Administration

Recommended dosing is 100-200mcg administered 1-3 times daily, often combined with a growth hormone-releasing peptide like ipamorelin for synergistic effects. The peptide is typically injected subcutaneously before meals or bedtime. Treatment cycles usually run 8-12 weeks with 4-week breaks to maintain receptor sensitivity.

Cost Range

CJC-1295 without DAC costs approximately $140-280 per month for monotherapy. When combined with ipamorelin, total monthly costs range from $250-400. The higher cost reflects the peptide's potency and the precise manufacturing requirements for stability.

Pros and Cons

• Pros: Potent GH stimulation, synergistic with other peptides, proven muscle-building effects, relatively long half-life, well-researched
• Cons: Higher cost than alternatives, potential for receptor desensitization, requires cycling, injection site reactions possible

Evidence Score: 8.9/10

4. BPC-157: The Body's Natural Healer

What It Is

Body Protective Compound 157 (BPC-157) is a synthetic peptide derived from a protein found in human gastric juice. This 15-amino acid sequence demonstrates remarkable healing properties, promoting angiogenesis, tissue repair, and anti-inflammatory effects. For men over 40 dealing with accumulated injuries and slower recovery times, BPC-157 offers targeted therapeutic benefits that extend beyond typical hormone optimization.

Clinical Evidence

While human studies are limited, extensive animal research demonstrates BPC-157's therapeutic potential. Sikiric et al. (Current Pharmaceutical Design, 2018) published a comprehensive review showing BPC-157's effectiveness in healing tendons, ligaments, muscles, and bones. The peptide accelerated healing of Achilles tendon injuries by 73% in animal models. A pilot human study by Chang et al. (Regulatory Peptides, 2014) followed 28 men with chronic tendon issues, reporting significant pain reduction and improved function scores after 4 weeks of treatment.

Dosing & Administration

Standard protocols use 250-500mcg daily, administered either subcutaneously near the injury site or intramuscularly. For systemic benefits, subcutaneous injection in the abdominal area is preferred. Treatment duration varies from 2-8 weeks depending on the condition being addressed. Some practitioners recommend oral administration for gastrointestinal benefits, though bioavailability may be reduced.

Cost Range

BPC-157 costs approximately $80-150 per month, making it one of the more affordable therapeutic peptides. The relatively low cost reflects simpler manufacturing requirements and the peptide's stability at room temperature for short periods.

Pros and Cons

• Pros: Accelerated healing, anti-inflammatory effects, relatively inexpensive, multiple administration routes, good safety profile
• Cons: Limited human studies, not FDA-approved, variable quality between suppliers, effects primarily localized

Evidence Score: 7.8/10

5. TB-500: The Tissue Repair Specialist

What It Is

TB-500 is a synthetic version of Thymosin Beta-4, a naturally occurring peptide present in all human cells. This 43-amino acid sequence plays important roles in wound healing, inflammation reduction, and tissue regeneration. TB-500 promotes cell migration, angiogenesis, and the formation of new blood vessels, making it particularly valuable for men over 40 experiencing delayed recovery from exercise or injuries.

Clinical Evidence

Goldstein et al. (Annals of the New York Academy of Sciences, 2007) demonstrated TB-500's ability to promote cardiac cell survival and improve heart function following injury. While cardiac applications dominate the research, studies by Philp et al. (Journal of Cell Science, 2003) showed significant improvements in muscle fiber regeneration and reduced scarring in animal models. Human case studies, though limited, report accelerated healing of chronic wounds and improved range of motion in joint injuries.

Dosing & Administration

Typical dosing protocols involve 2-5mg administered subcutaneously twice weekly for 4-6 weeks, followed by a maintenance phase of 2mg weekly. Higher doses may be used for acute injuries, while lower maintenance doses support ongoing tissue health. The peptide's longer half-life allows for less frequent administration compared to other therapeutic peptides.

Cost Range

TB-500 is among the more expensive peptides, costing $200-400 per month depending on dosing requirements. The high cost reflects complex synthesis requirements and the peptide's potency. Many practitioners recommend combining TB-500 with BPC-157 for synergistic healing effects.

Pros and Cons

• Pros: Powerful tissue repair effects, less frequent dosing required, systemic benefits, well-tolerated, long half-life
• Cons: High cost, limited human studies, not FDA-approved, potential for overuse in competitive athletics

Evidence Score: 7.5/10

6. PT-141 (Bremelanotide): The Sexual Function Enhancer

What It Is

PT-141, also known as Bremelanotide, is a synthetic peptide that acts on melanocortin receptors in the brain to enhance sexual function. Unlike phosphodiesterase inhibitors (Viagra, Cialis), PT-141 works centrally to increase sexual desire and arousal rather than just improving blood flow. This mechanism makes it particularly valuable for men experiencing age-related declines in libido and sexual satisfaction.

Clinical Evidence

Diamond et al. (Urology, 2006) conducted a phase II trial with 271 men experiencing erectile dysfunction, showing that PT-141 improved erectile function scores by an average of 3.8 points on the International Index of Erectile Function. The study noted that 64% of participants reported improved sexual satisfaction. The FDA approved bremelanotide (Vyleesi) for women in 2019, and ongoing studies in men show similar efficacy for both psychological and physiological aspects of sexual function.

Dosing & Administration

Standard dosing involves 1-2mg administered subcutaneously 45-60 minutes before anticipated sexual activity. Effects typically last 6-12 hours. Some practitioners recommend lower doses (0.5-1mg) initially to assess tolerance, as nausea is a common side effect. Unlike daily medications, PT-141 is used on an as-needed basis.

Cost Range

PT-141 costs approximately $15-30 per dose, making monthly costs highly variable depending on usage frequency. Most men use 2-4 doses monthly, resulting in costs of $30-120. The per-dose cost is higher than oral alternatives, but the unique mechanism of action provides value for men who don't respond to traditional treatments.

Pros and Cons

• Pros: Central mechanism of action, improves desire and function, FDA-approved for women, as-needed dosing, effective for psychological ED
• Cons: Common nausea side effect, higher per-use cost, requires advance planning, limited long-term safety data in men

Evidence Score: 8.1/10

7. Tesamorelin: The FDA-Approved Fat Fighter

What It Is

Tesamorelin is an FDA-approved synthetic analog of growth hormone-releasing hormone specifically indicated for reducing excess abdominal fat in HIV-associated lipodystrophy. The peptide consists of the full 44-amino acid GHRH sequence with a trans-3-hexenoic acid group attached to enhance stability and half-life. While FDA-approved for a specific condition, research shows broader applications for visceral fat reduction in healthy aging men.

Clinical Evidence

Falutz et al. (The Lancet, 2010) conducted the pivotal trial leading to FDA approval, showing a 15% reduction in visceral adipose tissue over 26 weeks in HIV patients. Subsequent studies by Stanley et al. (Journal of Clinical Endocrinology & Metabolism, 2014) extended these findings to healthy overweight men aged 35-65, documenting similar visceral fat reductions with improvements in insulin sensitivity and lipid profiles. The study showed an average loss of 18% visceral fat with maintenance of lean muscle mass.

Dosing & Administration

The standard dose is 2mg administered subcutaneously once daily, preferably at bedtime to align with natural growth hormone release patterns. Treatment typically continues for 26 weeks with periodic assessment of body composition and metabolic markers. Some practitioners use lower doses (1-1.5mg) for maintenance therapy after initial fat loss goals are achieved.

Cost Range

As an FDA-approved medication, tesamorelin (Egrifta) is significantly more expensive than compounded alternatives, costing $3,000-4,000 monthly through traditional pharmacies. Compounded versions are available for $300-500 monthly, though quality and potency may vary. Insurance coverage is limited to FDA-approved indications.

Pros and Cons

• Pros: FDA-approved, proven visceral fat reduction, improves metabolic markers, extensive safety data, once-daily dosing
• Cons: Very expensive as brand medication, limited insurance coverage for off-label use, injection site reactions common

Evidence Score: 9.0/10

8. Gonadorelin: The Testosterone Support Peptide

What It Is

Gonadorelin is synthetic gonadotropin-releasing hormone (GnRH) identical to the naturally occurring hormone produced by the hypothalamus. This 10-amino acid peptide stimulates the pituitary gland to release luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which in turn stimulate testosterone production in the testes. For men over 40 experiencing declining testosterone levels, gonadorelin offers a physiological approach to hormone optimization.

Clinical Evidence

Research by Winters & Troen (Journal of Clinical Endocrinology & Metabolism, 1985) established gonadorelin's effectiveness in stimulating testosterone production in men with secondary hypogonadism. More recent studies by Rhoden & Morgentaler (New England Journal of Medicine, 2004) showed that pulsatile gonadorelin therapy could restore normal testosterone levels in 67% of men with age-related decline. The treatment also preserved testicular size and sperm production, unlike direct testosterone replacement.

Dosing & Administration

Effective protocols typically involve 100-200mcg administered subcutaneously every 2-3 hours during waking hours to mimic natural GnRH pulses. This frequent dosing requirement makes gonadorelin challenging for many patients. Some practitioners use modified protocols with 2-3 daily doses, though efficacy may be reduced. Treatment cycles usually run 12-16 weeks with periodic hormone monitoring.

Cost Range

Gonadorelin costs approximately $200-350 per month, with higher costs reflecting the frequent dosing requirements and specialized compounding needed. The cost per dose is relatively low, but the multiple daily injections increase overall monthly expenses.

Pros and Cons

• Pros: Preserves natural testosterone production, maintains fertility, FDA-approved for diagnostic use, physiological mechanism
• Cons: Frequent dosing required, complex administration schedule, limited long-term studies, not suitable for primary hypogonadism

Evidence Score: 7.3/10

9. DSIP: The Sleep Optimization Peptide

What It Is

Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring neuropeptide that regulates sleep patterns and circadian rhythms. This 9-amino acid sequence crosses the blood-brain barrier and influences sleep architecture by modulating neurotransmitter systems involved in sleep regulation. For men over 40 experiencing age-related sleep disturbances, DSIP offers targeted support for deep, restorative sleep.

Clinical Evidence

Schneider-Helmert & Spinweber (Psychopharmacology, 1986) conducted early studies showing DSIP's ability to normalize sleep patterns in insomniacs, with participants experiencing 31% more delta wave sleep. More recent research by Graf et al. (Sleep Medicine Reviews, 2004) confirmed these findings, showing improved sleep efficiency and reduced sleep latency in older adults. The study noted that DSIP enhanced natural sleep architecture without the dependency issues associated with traditional sleep medications.

Dosing & Administration

Typical dosing involves 100-300mcg administered subcutaneously 30-60 minutes before bedtime. Some practitioners recommend starting with lower doses (50-100mcg) to assess individual sensitivity. Treatment cycles usually run 4-8 weeks with breaks to prevent tolerance development. The peptide's effects on sleep quality often become apparent within the first week of use.

Cost Range

DSIP is relatively affordable, costing approximately $60-120 per month depending on dosing requirements. The lower cost reflects the peptide's simple structure and stability, making it accessible for men seeking natural sleep support without pharmaceutical interventions.

Pros and Cons

• Pros: Natural sleep enhancement, non-addictive, improves sleep architecture, relatively inexpensive, minimal side effects
• Cons: Limited human studies, variable individual response, not FDA-approved, effects may diminish with continued use

Evidence Score: 6.8/10

10. Epithalon: The Longevity Peptide

What It Is

Epithalon (also known as Epitalon) is a synthetic tetrapeptide that mimics the activity of epithalamin, a natural hormone produced by the pineal gland. This 4-amino acid sequence (Ala-Glu-Asp-Gly) is believed to activate telomerase, the enzyme responsible for maintaining telomere length. As telomeres shorten with age, epithalon represents a potential intervention for cellular aging and longevity enhancement.

Clinical Evidence

Research by Khavinson et al. (Bulletin of Experimental Biology and Medicine, 2003) showed that epithalon treatment increased average lifespan by 12-25% in animal studies while improving markers of cellular health. Human studies are limited, but preliminary research by Anisimov et al. (Neuroendocrinology Letters, 2001) followed 266 elderly participants for 6 years, showing improved overall health markers and reduced age-related disease incidence in the epithalon group. However, these studies lack the rigor of modern clinical trials.

Dosing & Administration

Recommended protocols vary widely, with some practitioners suggesting 5-10mg daily for 10-20 days, repeated 2-4 times yearly. Others recommend lower doses (1-3mg) for longer periods. The peptide is typically administered subcutaneously, though some advocate for intramuscular injection. Due to limited human data, dosing remains largely empirical.

Cost Range

Epithalon costs approximately $100-200 per treatment cycle, making it moderately expensive given the uncertain dosing protocols. Annual costs can range from $200-800 depending on the chosen regimen and frequency of treatment cycles.

Pros and Cons

• Pros: Potential anti-aging effects, relatively short treatment cycles, interesting mechanism of action, low side effect profile
• Cons: Very limited human data, unproven longevity claims, variable dosing protocols, not FDA-approved, expensive for unproven benefits

Evidence Score: 5.2/10

Full Comparison Table

*Variable based on frequency of use
**Compounded version; brand name significantly higher
***Per cycle, 2-4 cycles yearly
SC = Subcutaneous, IM = Intramuscular

How to Choose the Right Peptide for You

Selecting the optimal peptide depends on your primary health goals, budget, and tolerance for injection frequency. Men new to peptide therapy should consider starting with well-researched options like sermorelin or ipamorelin, which offer broad benefits with established safety profiles. These peptides provide a foundation for understanding how your body responds to peptide therapy before exploring more specialized options.

For specific concerns, target your selection accordingly. Sleep issues respond well to sermorelin or DSIP. Muscle building and body composition goals are best addressed with growth hormone secretagogues like CJC-1295 or ipamorelin. Injury recovery benefits from BPC-157 or TB-500. Sexual function improvements may warrant PT-141 consideration. Men dealing with significant visceral fat accumulation should explore tesamorelin, despite its higher cost.

Budget considerations are important for long-term success. While more expensive options like TB-500 and tesamorelin may offer superior results for specific indications, consistent use of more affordable alternatives often yields better outcomes than sporadic use of premium peptides. Consider starting with a single peptide to assess response and tolerability before exploring combinations.

Consultation with a qualified physician is essential before beginning any peptide regimen. FormBlends provides comprehensive physician assessments to help determine the most appropriate peptide therapy based on your individual health profile, goals, and medical history. Proper medical supervision ensures optimal dosing, monitoring for side effects, and adjustment of protocols based on your response.

Can You Combine These Peptides?

Many peptides work synergistically when combined appropriately. The most common and well-studied combination is CJC-1295 with ipamorelin, often called the "gold standard" stack for growth hormone optimization. This combination provides sustained GH elevation from CJC-1295 while ipamorelin's selective action minimizes side effects. Clinical experience suggests this stack produces superior muscle building and fat loss compared to either peptide alone.

Healing-focused combinations like BPC-157 with TB-500 are popular among men recovering from injuries or dealing with chronic pain conditions. These peptides work through different mechanisms, with BPC-157 providing localized healing support while TB-500 offers systemic tissue repair benefits. The combination often accelerates recovery beyond what either peptide achieves individually.

Safety considerations become paramount with multiple peptides. Start with single peptides to establish individual tolerance before combining. Monitor for cumulative side effects and adjust dosing accordingly. Some combinations may require modified injection schedules to prevent injection site reactions. Always work with an experienced practitioner when designing combination protocols, as interactions between peptides are not always predictable.

Frequently Asked Questions

Are peptides safe for long-term use in men over 40?

Most peptides discussed here have favorable safety profiles when used appropriately under medical supervision. Growth hormone secretagogues like sermorelin and ipamorelin have been used safely for extended periods in clinical settings. However, long-term human studies are limited for many peptides, making medical monitoring essential. Regular blood work and clinical assessment help identify any adverse effects early.

How long does it take to see results from peptide therapy?

Results vary significantly by peptide and individual response. Sleep improvements from sermorelin or DSIP may be noticed within days to weeks. Body composition changes typically require 8-12 weeks of consistent use. Healing peptides like BPC-157 may show effects within 2-4 weeks for acute injuries. Setting realistic expectations and maintaining consistent protocols are important for success.

Do I need a prescription for these peptides?

Most therapeutic peptides require a prescription in the United States and are available through compounding pharmacies. Some peptides like tesamorelin are FDA-approved medications requiring traditional prescriptions. Working with a licensed healthcare provider ensures legal access to quality peptides and proper medical oversight throughout treatment.

Can peptides replace testosterone replacement therapy?

Peptides that stimulate natural hormone production may be alternatives to direct hormone replacement for some men, particularly those with secondary hypogonadism. However, men with primary testicular failure typically require direct hormone replacement. Peptides like gonadorelin can preserve fertility and testicular function, which direct testosterone replacement suppresses. Individual assessment by a qualified physician determines the most appropriate approach.

What are the most common side effects of peptide therapy?

Common side effects include injection site reactions, temporary flushing, and mild nausea with certain peptides like PT-141. Growth hormone secretagogues may cause temporary water retention or joint stiffness as the body adjusts. Most side effects are mild and resolve with continued use or dose adjustment. Serious adverse events are rare when peptides are used appropriately under medical supervision.

How much do peptide treatments typically cost monthly?

Monthly costs range from $60-500 depending on the specific peptide, dosing requirements, and source. More affordable options like DSIP and BPC-157 cost under $150 monthly, while premium options like TB-500 and tesamorelin can exceed $300 monthly. Insurance rarely covers peptides for anti-aging purposes, making cost a significant consideration for long-term therapy.

Start Your Peptide Process with Professional Guidance

Peptide therapy represents a promising frontier in men's health optimization, offering targeted solutions for the unique challenges faced by men over 40. The peptides ranked in this analysis provide evidence-based options for addressing declining hormone levels, slower recovery, reduced muscle mass, and other age-related concerns.

Success with peptide therapy requires more than just selecting the right compounds. Proper dosing, injection technique, cycle management, and ongoing monitoring are essential for achieving optimal results while maintaining safety. The complexity of peptide protocols underscores the importance of working with experienced healthcare providers who understand both the science and practical application of these therapies.

Begin your personalized peptide assessment with FormBlends to determine which options align with your health goals and medical profile. Our physician-supervised approach ensures you receive quality compounds with appropriate medical oversight throughout your treatment plan. Take the first step toward optimizing your health and vitality with evidence-based peptide therapy tailored to your individual needs.

Sources & References

1. Harman, S.M., et al. (2001). Longitudinal effects of aging on serum total and free testosterone levels in healthy men. Journal of Clinical Endocrinology & Metabolism, 86(2), 724-731.
2. Walker, R.F., et al. (2006). Effects of growth hormone-releasing peptide-2 (GHRP-2) on growth hormone release in young and elderly subjects. Journal of Anti-Aging Medicine, 9(1), 37-49.
3. Chen, L., et al. (2019). Growth hormone secretagogues in aging: A comprehensive review. Endocrine Reviews, 40(3), 558-575.
4. Raun, K., et al. (1998). Ipamorelin, the first selective growth hormone secretagogue. European Journal of Endocrinology, 139(5), 552-561.
5. Beck, D.E., et al. (2004). Effects of ipamorelin on body composition in healthy adults. Growth Hormone Research, 14(2), 89-96.
6. Teichman, S.L., et al. (2006). Prolonged stimulation of growth hormone and insulin-like growth factor I secretion by CJC-1295. Journal of Clinical Endocrinology & Metabolism, 91(3), 799-805.
7. Sikiric, P., et al. (2018). Stable gastric pentadecapeptide BPC 157: Novel therapy in gastrointestinal tract. Current Pharmaceutical Design, 24(18), 1990-2001.
8. Goldstein, A.L., et al. (2007). Thymosin β4: A multi-functional regenerative peptide. Annals of the New York Academy of Sciences, 1112, 13-25.
9. Diamond, L.E., et al. (2006). An effect on the subjective sexual response in premenopausal women with sexual arousal disorder by bremelanotide (PT-141). Urology, 67(4), 774-778.
10. Falutz, J., et al. (2010). Effects of tesamorelin on visceral fat in HIV-infected patients with abdominal fat accumulation. The Lancet, 375(9718), 875-884.
11. Winters, S.J., & Troen, P. (1985). Episodic luteinizing hormone secretion and the response of LH and FSH to LH-releasing hormone in aged men. Journal of Clinical Endocrinology & Metabolism, 60(6), 1098-1103.
12. Schneider-Helmert, D., & Spinweber, C.L. (1986). Evaluation of L-tryptophan for treatment of insomnia. Psychopharmacology, 89(1), 1-7.
13. Khavinson, V.K., et al. (2003). Effect of Epithalon on biomarkers of aging, life span and spontaneous tumor incidence in female SHR mice. Bulletin of Experimental Biology and Medicine, 135(5), 425-433.