Complete Peptide List: 30+ Peptides And What They Do - SeekPeptides

For education only

This guide cannot diagnose a condition or recommend a personal treatment plan. Discuss medical questions with a qualified professional.

Need to know what each peptide actually does?

This comprehensive peptide directory covers 30+ research peptides with clear descriptions of their primary functions, typical uses, dosing ranges, and who benefits most from each one.

Quick reference format - find the peptide you're researching, understand what it does in 30 seconds, then dive deeper into specific guides if it matches your goals.

How to use this peptide list

Format for each peptide:

Primary function: What it does in one sentence

Main uses: Top 3-5 applications

Typical dose: Standard dosing range

Best for: Who benefits most

Learn more: Link to detailed guide

Organization: Alphabetical for easy reference

Not included: Extremely rare or experimental peptides with minimal human use data

Read our what are peptides guide for fundamentals.

The complete peptide directory

AOD-9604 (Anti-Obesity Drug)

Primary function: Fat burning peptide that mimics growth hormone's fat-loss effects without affecting blood sugar

Main uses:

Targeted fat loss (especially stubborn areas)

Metabolic enhancement

Body recomposition without muscle loss

Alternative to full GH protocols

Typical dose: 300-600mcg injected subcutaneously daily, preferably fasted

Best for: People wanting fat loss benefits of GH without full GH protocol, those with insulin sensitivity concerns

Duration: 12-16 weeks for significant results

Learn more: Best peptides for weight loss

BPC-157 (Body Protection Compound)

Primary function: Accelerates healing of muscles, tendons, ligaments, and gut tissue through angiogenesis and cellular repair

Injury recovery (sports injuries, surgical recovery)

Tendon and ligament healing

Gut health (leaky gut, IBS, gastritis)

Joint pain relief

Injury prevention during heavy training

Typical dose: 250-500mcg injected subcutaneously 1-2x daily, or oral for gut issues

Best for: Athletes with injuries, anyone with chronic gut issues, people wanting faster recovery

Duration: 8-12 weeks for most injuries, can use longer for chronic conditions

Learn more: BPC-157 complete guide

Bremelanotide (PT-141)

Primary function: Activates desire pathways in the brain to restore sexual arousal and libido

Low libido (especially in women post-menopause)

Sexual dysfunction not responsive to other treatments

Desire issues (not mechanical issues)

Typical dose: 0.5-2mg injected subcutaneously 2-3 hours before desired effect

Best for: Women with menopause-related libido loss, people with desire issues where other approaches failed

Duration: Use as needed (not daily protocol), 1-3x weekly typical

Learn more: Peptides for women

CJC-1295 (with or without DAC)

Primary function: Extends growth hormone release for sustained elevated GH levels

Muscle building and body recomposition

Anti-aging (paired with Ipamorelin)

Enhanced recovery

Improved sleep quality

Fat loss while preserving muscle

Typical dose: 1-2mg injected subcutaneously 2x weekly (commonly Monday/Thursday)

Best for: People wanting sustained GH elevation, those stacking with Ipamorelin for comprehensive GH optimization

Duration: 12-24 weeks minimum, can use long-term

Learn more: Ipamorelin vs CJC-1295 and CJC-1295 calculator

DSIP (Delta Sleep-Inducing Peptide)

Primary function: Promotes deep sleep and may help regulate sleep patterns

Sleep quality improvement

Insomnia treatment

Stress reduction

Recovery enhancement through better sleep

Typical dose: 100-300mcg injected before bed

Best for: People with sleep disorders, athletes needing better recovery through sleep optimization

Duration: Use as needed or 4-8 week protocols

Note: Less commonly used than other peptides, mixed results reported

Epithalon (Epitalon)

Primary function: May extend telomeres and activate telomerase for potential longevity benefits

Longevity and anti-aging

Cellular health optimization

Potential lifespan extension

Circadian rhythm regulation

Typical dose: 5-10mg total over 10-20 days, cycled 2-4x yearly

Best for: Biohackers focused on longevity, people interested in cutting-edge anti-aging

Duration: Short intensive cycles (10-20 days) repeated periodically

Note: Expensive, experimental, limited human data but intriguing animal studies

Follistatin

Primary function: Inhibits myostatin (muscle growth inhibitor) to allow enhanced muscle development

Extreme muscle building beyond natural limits

Breaking through muscle-building plateaus

Competitive bodybuilding

Muscle wasting conditions

Typical dose: 100mcg daily or every other day

Best for: Advanced users, competitive bodybuilders, people with muscle wasting conditions

Duration: 4-8 weeks typically

Note: Expensive, limited availability, advanced peptide for serious users only

GHK-Cu (Copper Peptides)

Primary function: Stimulates collagen production and reduces inflammation for skin rejuvenation and tissue repair

Skin anti-aging (reduces wrinkles, improves texture)

Hair growth and thickness

Wound healing

Anti-inflammatory effects

Tissue repair and remodeling

Typical dose: 1-3mg injected daily, or topical serums (1-3% concentration) applied 2x daily

Best for: People focused on skin aging, hair thinning, chronic inflammation

Duration: 12-24 weeks for significant skin/hair improvements

Learn more: GHK-Cu complete guide and glow peptides

GHRP-2 (Growth Hormone Releasing Peptide-2)

Primary function: Stimulates strong GH pulses and increases appetite

Muscle building with appetite enhancement

Bulking phases for hard gainers

GH stimulation with hunger benefits

Alternative to Ipamorelin when appetite increase desired

Typical dose: 100-300mcg injected 2-3x daily on empty stomach

Best for: People struggling to eat enough calories for muscle gain, bulking phases

Duration: 12-24 weeks

Note: Similar to Ipamorelin but with stronger hunger effects

GHRP-6 (Growth Hormone Releasing Peptide-6)

Primary function: Stimulates GH release with very strong appetite stimulation

Muscle building during aggressive bulking

Increasing appetite for hard gainers

GH stimulation when hunger is desired side effect

Typical dose: 100-300mcg injected 2-3x daily

Best for: Hard gainers, people needing significant appetite increase for muscle building

Note: Strongest hunger-stimulating GH peptide, not ideal for cutting phases

Hexarelin

Primary function: Potent GH releaser with additional cardio-protective properties

Strong GH stimulation

Muscle building

Cardiovascular health support

Alternative to other GHRP peptides

Typical dose: 100-200mcg injected 2-3x daily

Best for: People wanting potent GH release, those with cardiovascular concerns

Duration: 8-16 weeks (potential desensitization with longer use)

Note: May cause desensitization with prolonged use, cycle on/off recommended

HGH Fragment 176-191

Primary function: Isolated fat-burning portion of growth hormone without other GH effects

Targeted fat loss

Fat burning without muscle gain

Cutting phases

Stubborn fat reduction

Typical dose: 250-500mcg injected subcutaneously 1-2x daily, fasted

Best for: People wanting only fat loss from GH (not muscle gain or other effects)

Duration: 12-16 weeks

Learn more: HGH Fragment calculator

Ipamorelin

Primary function: Selective GH releaser that creates natural GH pulses without affecting cortisol or appetite

Anti-aging (paired with CJC-1295)

Typical dose: 100-300mcg injected subcutaneously 2-3x daily (morning, afternoon, before bed)

Best for: Most people wanting GH benefits - cleanest side effect profile of GH peptides

Duration: 12-24 weeks minimum, safe for long-term use

Learn more: Ipamorelin vs CJC-1295 and muscle growth guide

Kisspeptin

Primary function: Regulates reproductive hormones and may help with fertility and hormonal balance

Fertility support

Hormonal regulation

Potential menopause symptom relief

Libido enhancement

Typical dose: 1-10mcg daily

Best for: People with fertility issues, hormonal imbalances

Duration: Varies by application

Note: Newer peptide with limited data, experimental

Melanotan II (MT2)

Primary function: Stimulates melanin production for tanning and has appetite suppression/libido effects

Tanning without UV exposure

Appetite suppression for fat loss

Skin protection (increased melanin)

Typical dose: 250-500mcg injected daily initially, then maintenance doses as needed

Best for: People wanting tan year-round, additional appetite suppression during dieting

Duration: Load for 2-4 weeks, then maintenance 1-2x weekly

Note: Tanning is cosmetic, appetite/libido effects bonus for some users

MGF (Mechano Growth Factor)

Primary function: Localized muscle growth and repair stimulation, especially post-workout

Muscle building and hypertrophy

Muscle repair after training

Injury recovery in muscle tissue

Localized muscle growth

Typical dose: 100-200mcg injected immediately post-workout, can inject locally near trained muscle

Best for: Bodybuilders, people wanting enhanced muscle growth response to training

Duration: Use on training days for 4-8 weeks

Note: Short half-life, must use immediately post-workout for best effects

Mod GRF 1-29 (CJC-1295 no DAC)

Primary function: Short-acting GH releaser that creates GH pulses when injected

GH stimulation with more frequent dosing

Paired with GHRP peptides for synergistic GH release

Muscle building and recovery

Alternative to CJC-1295 DAC for those wanting more control

Typical dose: 100-200mcg injected 2-3x daily with meals

Best for: People wanting multiple daily GH pulses, those preferring shorter-acting peptides

Note: Requires more frequent dosing than CJC-1295 with DAC

MOTS-c (Mitochondrial-Derived Peptide)

Primary function: Enhances mitochondrial function and metabolic health

Energy and endurance enhancement

Metabolic health optimization

NAD+ boosting effects

Longevity and cellular health

Fat metabolism improvement

Typical dose: 5-15mg injected subcutaneously 2-3x weekly

Best for: People wanting increased energy, endurance athletes, longevity-focused individuals

Learn more: NAD+ peptides guide

PEG-MGF (Pegylated Mechano Growth Factor)

Primary function: Long-acting version of MGF for sustained muscle growth and repair

Systemic muscle growth (vs localized MGF)

Post-workout muscle repair

Injury recovery

Typical dose: 200-300mcg injected 2-3x weekly post-workout

Best for: Bodybuilders wanting sustained MGF effects without daily dosing

Duration: 4-8 weeks

Note: Pegylation extends half-life significantly vs regular MGF

Selank

Primary function: Anxiety reduction and cognitive enhancement without sedation

Anxiety and stress management

Cognitive function improvement

Focus and mental clarity

Mood stabilization

Immune system support

Typical dose: 250-500mcg injected or nasal spray 1-3x daily

Best for: People with anxiety, focus issues, high-stress situations

Note: Nootropic peptide, effects subtle but meaningful for anxiety/cognition

Semax

Primary function: Cognitive enhancement, focus improvement, and neuroprotection

Mental clarity and focus

Cognitive performance enhancement

Neuroprotection

Stroke recovery support

ADHD symptom management (anecdotal)

Typical dose: 300-600mcg nasal spray or injected 1-2x daily

Best for: People wanting cognitive enhancement, students, professionals with high mental demands

Duration: Use as needed or 4-12 week cycles

Note: Popular nootropic peptide with strong anecdotal support

Semaglutide

Primary function: GLP-1 receptor agonist that provides powerful appetite suppression for weight loss

Significant weight loss (15-20% body weight)

Appetite control

Blood sugar regulation

Obesity treatment

Metabolic health improvement

Typical dose: Start 0.25mg weekly, titrate up to 1-2.4mg weekly over 16-20 weeks

Best for: People needing to lose 20+ lbs, those with difficult appetite control, metabolic syndrome

Duration: 20-24 weeks to goal weight, then maintenance dose ongoing

Learn more: Semaglutide guide and semaglutide calculator

Sermorelin

Primary function: Stimulates natural GH release from pituitary gland

Growth hormone optimization

Anti-aging

Alternative to Ipamorelin (similar effects)

Typical dose: 200-300mcg injected subcutaneously before bed

Best for: People wanting GH benefits, those who prefer established older peptides

Duration: 12-24 weeks minimum

Note: Similar to Ipamorelin but less selective (may affect cortisol/prolactin slightly)

SS-31 (Elamipretide)

Primary function: Mitochondrial-targeted peptide that improves cellular energy production

Mitochondrial dysfunction

Chronic fatigue

Neurodegenerative disease support

Cardiovascular health

Aging-related energy decline

Typical dose: 5-20mg injected subcutaneously daily

Best for: People with chronic fatigue, mitochondrial issues, serious biohackers

Duration: 8-24 weeks

Note: Expensive, cutting-edge longevity peptide with promising research

TB-500 (Thymosin Beta-4)

Primary function: Promotes cell migration and tissue organization for healing, especially tendons and ligaments

Injury recovery (especially chronic injuries)

Flexibility and range of motion improvement

Scar tissue reduction

Hair growth (secondary benefit)

Typical dose: 2-10mg injected subcutaneously 2x weekly (higher doses for loading phase)

Best for: People with tendon/ligament injuries, chronic pain, flexibility issues

Duration: 8-16 weeks minimum for tissue healing

Learn more: TB-500 complete guide and TB-500 calculator

Tesamorelin

Primary function: Specifically reduces visceral (belly) fat while stimulating GH release

Visceral fat reduction

Belly fat specifically

HIV-associated lipodystrophy (original indication)

Typical dose: 1-2mg injected subcutaneously daily

Best for: People with stubborn belly fat, metabolic syndrome, visceral fat accumulation

Note: More targeted for belly fat than general weight loss peptides

Thymosin Alpha-1

Primary function: Immune system modulation and enhancement

Immune function improvement

Chronic infections

Autoimmune condition support (may help or harm, individual assessment needed)

Cancer treatment support (adjunct)

Hepatitis treatment support

Typical dose: 1.6-3mg injected subcutaneously 2-3x weekly

Best for: People with compromised immunity, chronic infections, preventive immune support

Duration: 4-12 weeks for acute issues, can use long-term for chronic conditions

Note: Powerful immune modulator, consult doctor for autoimmune conditions

Tirzepatide

Primary function: Dual GLP-1/GIP receptor agonist for enhanced weight loss and metabolic benefits

Weight loss (slightly better than semaglutide, 15-22%)

Appetite suppression

Blood sugar control (superior to semaglutide)

Metabolic syndrome treatment

Typical dose: Start 2.5mg weekly, titrate to 5-15mg weekly over 16-20 weeks

Best for: People wanting maximum weight loss results, those with diabetes or prediabetes

Duration: 20-24 weeks to goal, then maintenance

Learn more: Tirzepatide dosing guide and semaglutide vs tirzepatide

Peptides by primary goal

Best peptides for injury recovery

Primary choices:

BPC-157: First-line for most injuries

TB-500: Especially tendons/ligaments

GHK-Cu: Chronic inflammation, skin wounds

Best stack: BPC-157 + TB-500 for severe injuries

Learn more: Injury recovery guide

Best peptides for muscle growth

Ipamorelin: Clean GH pulses

CJC-1295: Sustained GH elevation

MGF/PEG-MGF: Localized muscle growth

GHRP-6: If appetite increase desired

Best stack: Ipamorelin + CJC-1295 (gold standard)

Learn more: Muscle growth guide

Best peptides for weight loss

Semaglutide: Proven, effective, well-studied

Tirzepatide: Slightly better results

AOD-9604: Fat burning without appetite effects

HGH Fragment 176-191: Targeted fat loss

Best for most people: Semaglutide (effectiveness + cost + safety data)

Learn more: Weight loss guide

Best peptides for anti-aging

Ipamorelin + CJC-1295: Foundation

NAD+ peptides (MOTS-c, SS-31): Cellular energy

GHK-Cu: Skin and inflammation

Epithalon: Experimental longevity

Best stack: Ipamorelin + CJC-1295 + MOTS-c + GHK-Cu (comprehensive)

Learn more: Anti-aging peptides

Best peptides for skin and hair

GHK-Cu: Best for skin

TB-500: Hair growth potential

Ipamorelin + CJC-1295: Systemic skin improvement

Best approach: GHK-Cu topical (face) + injectable (systemic)

Learn more: Glow peptides guide

Best peptides for energy and performance

MOTS-c: Mitochondrial function

SS-31: Cellular energy

Semax: Cognitive energy

Ipamorelin + CJC-1295: Overall vitality

Best for endurance: MOTS-c

Learn more: Athletic performance

Best peptides for gut health

Primary choice:

BPC-157: Heals leaky gut, IBS, gastritis

Secondary:

GHK-Cu: Anti-inflammatory for gut

Administration: Oral BPC-157 for direct gut contact, injectable for systemic

Learn more: Gut health peptides

How to choose the right peptide

Step 1: Identify your primary goal

What's your #1 objective right now?

Injury healing → BPC-157

Muscle building → Ipamorelin + CJC-1295

Weight loss → Semaglutide

Anti-aging → Ipamorelin + CJC-1295

Skin improvement → GHK-Cu

Energy → MOTS-c

Cognitive → Semax

Sleep → DSIP or Ipamorelin (improves sleep quality)

Start with one goal, one peptide (or proven stack like Ipamorelin + CJC-1295)

Step 2: Consider your experience level

Beginner: Start with well-studied, safe peptides

BPC-157 (injury)

Semaglutide (weight loss)

Ipamorelin + CJC-1295 (muscle/anti-aging)

Intermediate: Expand to secondary peptides

TB-500, GHK-Cu, NAD+ peptides

Advanced: Experimental or complex protocols

Epithalon, SS-31, stacking 3+ peptides

Don't start advanced. Master basics first.

Step 3: Assess budget

Budget-friendly options ($60-250/month):

BPC-157 alone

Semaglutide (research)

Single peptide protocols

Moderate budget ($300-500/month):

Ipamorelin + CJC-1295

BPC-157 + TB-500

Comprehensive single-goal protocols

Premium budget ($500-1000+/month):

Multiple peptide stacks

NAD+ peptides + GH peptides + others

Comprehensive anti-aging protocols

Use our peptide cost calculator to plan.

Step 4: Check contraindications

Avoid certain peptides if:

Pregnant/breastfeeding: Avoid all peptides (no safety data)

Active cancer: Avoid GH-releasing peptides (theoretical tumor growth concern)

Severe kidney/liver disease: Consult doctor before any peptides

Autoimmune conditions: Thymosin Alpha-1 may help or harm (individual assessment)

Always consult healthcare provider if serious health conditions present.

Read our peptide safety guide.

Step 5: Start and assess

Begin conservatively:

Start single peptide or proven stack

Use standard doses (not maximum)

Run 12-16 weeks minimum

Track progress weekly

Get blood work at 12 weeks

After first protocol:

Assess results objectively

Decide if continuing, switching, or adding peptides

Adjust based on experience

See our getting started guide.

Frequently asked questions

Which peptide is best for beginners?

BPC-157 (if injury), Semaglutide (if weight loss), or Ipamorelin + CJC-1295 (if muscle/anti-aging). All three have excellent safety profiles and clear benefits.

Can I stack multiple peptides from this list?

Yes, but start simple. BPC-157 + TB-500 stack works. Ipamorelin + CJC-1295 stack works. Don't stack 5+ peptides as beginner. Build complexity gradually.

How do I know if a peptide is working?

Track specific metrics (pain levels for BPC-157, weight for semaglutide, strength for Ipamorelin/CJC). Most peptides show effects in 4-8 weeks. Give adequate time.

Are research peptides legal?

Legal to purchase and possess for research purposes in most countries. Not FDA-approved for human consumption. Many people use them off-label. Check local laws.

Where do I buy these peptides?

Research peptide suppliers with third-party testing. Look for batch-specific COAs, established reputation, responsive support. See our best vendors guide.

Do all these peptides require injections?

Most yes (subcutaneous). Some available as nasal spray (Semax, Selank). BPC-157 can be oral for gut issues. Injections provide best bioavailability.

How much do these peptides cost?

$30-80 per vial typically. Monthly costs: $60-1000+ depending on which peptides and doses. Budget-friendly options exist for most goals.

Can women use all these peptides?

Yes, with same benefits and safety as men. Except avoid during pregnancy/breastfeeding. PT-141 particularly effective for women's libido issues. See our peptides for women guide.

Which peptides can be used long-term?

BPC-157, Ipamorelin, CJC-1295, NAD+ peptides, GHK-Cu safe for months to years. Weight loss peptides use until goal achieved. Cycle advanced peptides.

What's the most versatile peptide on this list?

BPC-157 - works for injuries, gut health, inflammation, prevention. Ipamorelin + CJC-1295 close second for comprehensive anti-aging/performance.

The bottom line

This complete peptide list covers 30+ research peptides organized for quick reference.