Peptide Therapy In Los Angeles | Doctor Guy Citrin At Citrin Wellness

Doctor Guy -  - Naturopathic Doctor

Doctor Guy

Naturopathic Doctor & Hormone Specialist located in Los Angeles, CA

Peptide Therapy in Los Angeles | Doctor Guy Citrin at Citrin Wellness

Peptides are short chains of amino acids that act as cellular messengers, binding with receptors on the surface of your cells to relay vital information that tells other cells and molecules what to do. At Doctor Guy in the Mid-Wilshire area of Los Angeles, Guy Citrin, ND, offers comprehensive peptide therapy to address a wide spectrum of health and wellness goals, from cognitive enhancement and tissue regeneration to metabolic optimization and anti-aging.

Peptide Therapy in Los Angeles | Dr. Guy Citrin at Citrin Wellness

 

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Peptide Therapy Treatment

Advanced Peptide Treatments for Southern California Patients

Dr. Citrin specializes in evidence-based peptide protocols that target specific physiological pathways to help patients achieve measurable results. Whether you're seeking peptide therapy in Los Angeles for performance optimization, recovery, longevity, or aesthetic enhancement, Citrin Wellness provides personalized treatment plans using pharmaceutical-grade peptides across multiple therapeutic categories:

brain Neuro & Cognitive Enhancers – Support memory, focus, mental clarity, and neuroprotection with peptides like Cerebrolysin, Dihexa, Semax, Selank, and Methylene Blue.

sleeping accommodation Sleep & Mood Optimization – Improve deep sleep, reduce stress, and support emotional balance with DSIP, Epitalon, and synergistic growth hormone peptides like CJC-1295 + Ipamorelin.

dna Immune & Cellular Repair – Strengthen immune function and cellular health with Thymosin Alpha-1 and Thymosin Beta-4, powerful immune-modulating peptides backed by clinical research.

fire Healing & Physical Regeneration – Accelerate tissue repair, wound healing, and recovery from injury with BPC-157, GHK-Cu, and other regenerative peptides proven to support muscle, tendon, ligament, and gut healing.

flexed biceps Hormones & Metabolic Support – Optimize body composition, energy levels, and metabolic health with FDA-approved options including Tesamorelin, Sermorelin, Semaglutide, and Tirzepatide.

automobile Cellular Energy & Anti-Aging – Boost mitochondrial function and combat aging at the cellular level with NAD+ precursors and MOTS-c.

red heart Sexual Health & Libido – Enhance sexual function and desire with PT-141 (Bremelanotide), an FDA-approved peptide for hypoactive sexual desire disorder.

bullseye Fat-Reducing & Metabolic Peptides – Support weight management and metabolic optimization with cutting-edge compounds like 5-Amino-1MQ.

Why Choose Peptide Therapy in Los Angeles with Doctor Guy?

As a naturopathic doctor with extensive experience in regenerative medicine, Dr. Guy Citrin understands that every patient's biochemistry is unique. At Citrin Wellness, peptide therapy is never one-size-fits-all. Dr. Citrin conducts comprehensive consultations to understand your health history, goals, and concerns before designing a customized peptide protocol tailored to your specific needs.

Located in Mid-Wilshire, Los Angeles, Doctor Guy serves patients throughout Southern California who are seeking innovative, science-backed approaches to health optimization. Whether you're an athlete looking to enhance recovery, a busy professional seeking cognitive edge, or someone committed to healthy aging and longevity, peptide therapy offers targeted solutions that work with your body's natural healing mechanisms.

Which Peptide could be the solution that I am looking for?

brain Neuro & Cognitive Enhancers

Cerebrolysin

A porcine brain–derived mixture of low-molecular-weight peptides and amino acids that mimics neurotrophic factors (e.g., BDNF, NGF). Used in parts of Europe and Asia via injection for stroke, dementia, traumatic brain injury, and other neurodegenerative conditions. It’s believed to support neuronal repair, survival, and cognitive recovery alzdiscovery.org+1pubmed.ncbi.nlm.nih.gov+1.

Methylene Blue

Originally a medical dye used to treat methemoglobinemia, it shows promise in lab and animal studies for boosting mitochondrial function and cognitive performance. It may enhance memory and attention in humans, but high-quality clinical evidence is still limited health.com+1wired.com+1.

Dihexa

A synthetic oligopeptide derived from angiotensin IV that crosses the blood-brain barrier and acts as a potent hepatocyte growth factor (HGF) mimetic. Developed at Washington State University, it promotes synaptogenesis (formation of new neural connections) and has been studied in animal models for Alzheimer's disease, traumatic brain injury, and cognitive enhancement. Preclinical research shows it may be millions of times more potent than BDNF at stimulating synaptic connectivity. Not FDA-approved; human clinical data remain limited and long-term safety profile unknown pmc.ncbi.nlm.nih.gov.

sleeping accommodation Sleep & Mood

DSIP (Delta Sleep-Inducing Peptide)

A naturally occurring nonapeptide linked to deep (delta-wave) sleep across multiple species including humans. Research indicates it may promote restorative sleep, reduce stress, support mood, and offer neuroprotective effects wikipedia.org. Reddit users have reported improved deep sleep with use https://www.reddit.com/.

Semax & Selank

These synthetic peptides (Semax = ACTH-derived; Selank = tuftsin analogue) are used in Russia for mood stabilization, anxiety relief, cognitive support, and stress resilience. While they show promise in some studies, peer-reviewed clinical data in Western populations remain limited.

CJC-1295 + Ipamorelin

A synergistic peptide combination where CJC-1295 (a GHRH analogue with 6-8 day half-life) provides sustained growth hormone release while Ipamorelin (a selective ghrelin receptor agonist with 2-hour half-life) delivers rapid GH pulses. Clinical trials showed sustained increases in GH and IGF-I levels for up to 28 days. Used off-label for improved sleep quality, recovery, lean muscle development, fat loss, and cognitive function. FDA warns of immunogenicity and cardiovascular risks. Not FDA-approved for routine usepubmed.ncbi.nlm.nih.gov.

Melanotan II

A synthetic analogue of alpha-melanocyte-stimulating hormone that stimulates melanogenesis for skin tanning and activates melanocortin receptors affecting sexual function and appetite. Phase I studies showed tanning effects within 5 doses and spontaneous erections 1-5 hours after administration. Health agencies advise against use due to serious concerns including potential melanoma risk, cardiovascular effects, renal dysfunction, and priapism. Not FDA-approved; sold illegally online. Its derivative bremelanotide (PT-141) is FDA-approved for sexual dysfunctionen.wikipedia.org.

dna Immune & Cellular Repair

Thymosin Alpha-1 (TA-1)

A 28-amino-acid thymus-derived peptide with immune-modulating properties. It enhances T-cell and dendritic-cell function, modulates cytokines, and has been used to support infections, vaccines, cancer, and sepsis outcomes www.frontiersin.org pmc.ncbi.nlm.nih.gov.

Thymosin Beta-4 (TB-4)

A naturally occurring 43-amino-acid peptide abundant in platelets and wound fluid. It regulates actin, supports cell migration, tissue repair, angiogenesis, and is being explored for muscle, tendon, ligament, and cardiac repair genscript.com.

fire Healing & Physical Regeneration

BPC-157

A 15-amino-acid synthetic peptide inspired by a human gastric juice protein. Widely studied in animals for its ability to promote healing of muscles, tendons, ligaments, gut lining, and other tissues; may reduce inflammation and increase blood flow pmc.ncbi.nlm.nih.gov. Human evidence remains scarce.

Epitalon

A synthetic tetrapeptide studied (mostly in animal models) for anti-aging potential via telomerase activation and improved mitochondrial function. Human clinical data are limited and largely experimental.

GHK-Cu

A naturally occurring copper-binding tripeptide discovered in human plasma in 1973, declining from 200 ng/ml at age 20 to 80 ng/ml by age 60. Promotes wound healing, collagen and elastin synthesis, angiogenesis, and provides antioxidant and anti-inflammatory effects. Modulates over 4,000 genes, resetting expression patterns to healthier states. Multiple studies confirm accelerated healing in skin, bone, hair follicles, and other tissues. Widely used in anti-aging cosmetics with excellent safety profile; not FDA-approved as a drug pmc.ncbi.nlm.nih.gov.

flexed biceps Hormones & Metabolic Support

Tesamorelin

A synthetic 44-amino-acid GHRH analogue. FDA-approved for reducing visceral fat in HIV-associated lipodystrophy (subcutaneous injection). Also monitored off-label for body-fat reduction, IGF-1 increase, energy, and recovery wikipedia.org.

Sermorelin

A 29-amino-acid GHRH analogue (GHRH 1–29 fragment). FDA-approved (1997) to assess and treat growth-hormone deficiency in children; no longer commercially supplied but sometimes used via compounding pharmacies. Stimulates pituitary to release HGH in a physiologic pattern with fewer risks en.wikipedia.org+1rxlist.com+1.

Semaglutide / Semaglutide

A long-acting GLP-1 receptor agonist used as a peptide injection to suppress appetite, regulate blood sugar, and support weight loss. FDA-approved for type 2 diabetes (brand Ozempic) and obesity (Wegovy). Side effects include nausea and GI upset. Theft and black-market misuse have been reported .

Tirzepatide

A dual GLP-1/GIP agonist peptide (brand names Mounjaro for diabetes, Zepbound for weight loss). FDA-approved; shown to produce significant weight loss (40–60 lb in trials). Gastrointestinal symptoms are common; rare serious events possible apnews.com.

automobile Cellular Energy & Anti-Fat

NAD⁺

A coenzyme, not technically a peptide but central to cellular energy, DNA repair, and aging. Oral precursors like NMN and NR support NAD⁺ levels. Used in longevity circles for energy and metabolic health, with typical dosing of 250–500 mg daily vogue.com.

MOTS-c

A mitochondrial-derived peptide being studied for metabolic and insulin-sensitizing effects. Preclinical research suggests benefits in mitochondrial function, but human data are still emerging.

red heart Sexual & Libido

PT-141 (Bremelanotide)

A melanocortin receptor–agonist peptide injection for treating hypoactive sexual desire disorder (HSDD) in premenopausal women and low sexual desire in both sexes. Unlike PDE5 inhibitors, it acts on the central nervous system. FDA-approved under the brand Vyleesi wikipedia.org.

bullseye Fat-Reducing / Metabolic Peptides

5-Amino-1MQ

A synthetic small molecule/peptide analog under investigation for fat-cell reduction via inhibiting nicotinamide N-methyltransferase. Most data are preclinical; human trials are still pending.

compass Summary Table

Peptide/Substance

Primary Use(s)

Approval Status

Cerebrolysin

Neuroprotection, stroke, dementia

Research stage

CJC-1295 + Ipamorelin

Growth hormone support

Clinical Trials completed

BPC-157

Tissue healing (muscle, tendon, gut)

Research stage

DSIP

Deep sleep, stress adaptation

Research stage

Dihexa

Cognitive Enhancement 

Research stage

GHK-Cu

Skin Regeneration

Extensive Research

Thymosin α1

Immune modulation, vaccines, infection

Clinical in some countries

Thymosin β4

Wound & tissue repair

Research stage

Tesamorelin

Visceral fat reduction (HIV lipodystrophy)

FDA-approved

Sermorelin

Growth hormone deficiency

FDA-approved (discontinued)

Semaglutide

Diabetes, weight loss

FDA-approved

Tirzepatide

Diabetes, weight loss

FDA-approved

NAD⁺ precursors (NR/NMN)

Cellular energy, anti-aging

Supplements

Melanotan II

Tanning & Libido

Clinical Trials 

Epitalon

Longevity, telomerase activation

Research stage

Semax & Selank

Cognition, anxiety, mood

Research stage

5-Amino-1MQ

Fat cell metabolism

Preclinical

MOTS-c

Metabolism, mitochondrial health

Preclinical

PT-141 (Bremelanotide)

Libido, sexual desire

FDA-approved (Vyleesi)

Methylene Blue

Mitochondrial enhancer, cognition

FDA-approved (limited use)

Pharmaceutical-Grade Quality & Expert Guidance

Safety, purity, and efficacy are paramount at Citrin Wellness. Dr. Citrin sources only pharmaceutical-grade peptides from reputable compounding pharmacies and provides ongoing monitoring to ensure optimal results. From FDA-approved therapies like Semaglutide and PT-141 to cutting-edge research peptides like BPC-157 and GHK-Cu, every treatment is administered with clinical precision and patient safety as the top priority.

Ready to Experience the Benefits of Peptide Therapy?

If you're searching for peptide therapy in Los Angeles or Southern California, look no further than Dr. Guy Citrin at Doctor Guy. Discover how targeted peptide protocols can help you optimize cognitive function, accelerate healing, enhance performance, support healthy aging, and achieve your wellness goals.

Call the office today to schedule your consultation and learn more about the transformative benefits of personalized peptide therapy in Los Angeles. 

Phone (appointments): 424-389-3547 | Phone (general inquiries): (424) 389-3547


Doctor Guy | Citrin Wellness
8920 Wilshire Boulevard, Suite 610, Los AngelesCA 90211
Serving Los Angeles, Beverly Hills, West Hollywood, Santa Monica, and all of Southern California