Complete List of Injectable Peptides: Categories, Uses & Dosing - SeekPeptides

You've seen mentions of BPC-157, semaglutide, growth hormone peptides, and dozens of others, but you don't have an all in one reference showing all your options organized by category and purpose.

Here's what you need: a complete, organized list of injectable peptides broken down by category.

Healing peptides, muscle-building peptides, fat loss peptides, anti-aging peptides, cognitive enhancement, sexual health.

Each one with its primary uses, typical dosing, and what you need to know.

This guide provides exactly that - the most comprehensive injectable peptide list available, organized by function.

You'll see every major peptide in each category, understand what differentiates them, learn standard dosing protocols, and know which peptides work best for your specific goals.

Let's start with healing and recovery peptides - the most popular category.

Healing and injury recovery peptides

These peptides accelerate tissue repair, reduce inflammation, and heal injuries faster than natural recovery.

BPC-157 (Body Protection Compound)

Primary uses:

Tendon and ligament injuries

Muscle tears and strains

Gut healing (leaky gut, IBS, ulcers)

Joint pain and inflammation

Post-surgical recovery

Typical dosing:

Healing: 250-500mcg twice daily (500mcg-1mg total daily)

Maintenance: 250mcg once daily

Duration: 4-12 weeks depending on injury

Administration:

Subcutaneous injection near injury site OR systemically (abdomen)

Works both locally and systemically

Special notes:

One of the safest peptides available

Works for both acute and chronic injuries

No known significant side effects

Not FDA-approved (research chemical)

See our BPC-157 complete guide and use our BPC-157 dosage calculator for precise measurements.

TB-500 (Thymosin Beta-4)

Deep tissue healing

Muscle recovery

Flexibility and range of motion

Chronic injuries

Hair growth (secondary benefit)

Loading phase: 5-10mg per week (split into 2-3 injections) for 4-6 weeks

Maintenance: 2-5mg per week

Duration: 8-16 weeks

Subcutaneous or intramuscular

Can inject anywhere (doesn't need to be near injury)

Slower acting than BPC-157 but deeper healing

Excellent for tissue regeneration

Often stacked with BPC-157 for maximum healing

Banned by WADA for athletes

Learn more in our TB-500 guide and compare with our BPC-157 vs TB-500 analysis. Use our TB-500 dosage calculator.

KPV (Lysine-Proline-Valine)

Inflammatory conditions

Gut inflammation (Crohn's, colitis)

Skin inflammation

Immune modulation

Injectable: 500-1,000mcg daily

Duration: 4-12 weeks

Subcutaneous injection

Also available as oral and nasal spray

Powerful anti-inflammatory

Minimal side effects

Useful for autoimmune conditions

Less commonly used than BPC-157/TB-500

GHK-Cu (Copper Peptide)

Wound healing

Skin regeneration

Hair growth

Anti-inflammatory effects

Tissue repair

Injectable: 1-2mg, 3-5 times per week

Intranasal: 2-3mg daily (alternative to injection)

Duration: Ongoing for anti-aging benefits

Intranasal spray (alternative delivery)

Strong evidence for tissue regeneration

Also used topically for skin (different from injectable)

Well-tolerated with minimal side effects

See our copper peptides guide for complete information.

Growth hormone and muscle building peptides

These stimulate growth hormone production or enhance muscle protein synthesis.

CJC-1295 (with or without DAC)

Muscle growth

Fat loss (body recomposition)

Anti-aging

Sleep quality

Recovery enhancement

Without DAC: 200-300mcg before bed, 5-7 days per week

With DAC: 1-2mg once or twice weekly

Duration: 3-6 months minimum for significant results

Typically paired with GHRP (Ipamorelin, GHRP-6, etc.)

Increases endogenous growth hormone production

"No DAC" version more commonly used

Works synergistically with other GHRPs

Long-term safety profile good

Use our CJC-1295 dosage calculator for precise dosing.

Ipamorelin

Growth hormone release

Fat loss

200-300mcg before bed, 5-7 days per week

Often stacked with CJC-1295

Duration: 3-6 months minimum

Cleanest GHRP (minimal side effects)

No increase in prolactin or cortisol

Excellent sleep enhancement

Mild hunger increase (less than GHRP-6)

See our Ipamorelin vs CJC-1295 comparison for stacking strategies.

GHRP-6 (Growth Hormone Releasing Peptide-6)

Appetite stimulation

Injury healing

100-300mcg, 2-3 times daily

Best on empty stomach

Duration: 3-6 months

Strong appetite increase (pro or con depending on goals)

Powerful GH release

Can increase prolactin (monitor for gynecomastia)

Older peptide, still effective

GHRP-2

Similar to GHRP-6 but less hunger

Still some prolactin increase

Good middle-ground between GHRP-6 and Ipamorelin

IGF-1 LR3 (Insulin-like Growth Factor)

Muscle growth (most anabolic peptide)

Body recomposition

Nutrient partitioning

40-80mcg daily

4-6 week cycles

Duration: Cycles with breaks (not continuous)

Subcutaneous or intramuscular injection

Very powerful for muscle growth

Requires cycling (not for long-term use)

Risk of hypoglycemia (carry fast carbs)

Advanced peptide (not for beginners)

Hexarelin

100-200mcg, 2-3 times daily

Duration: 4-8 weeks, then break (desensitization occurs)

Most powerful GHRP

Significant hunger increase

Desensitization with continuous use (need breaks)

Increases prolactin and cortisol more than other GHRPs

Learn complete muscle protocols in our best peptides for muscle growth guide.

Fat loss and weight management peptides

These peptides enhance fat metabolism or suppress appetite.

Semaglutide (Ozempic/Wegovy)

Weight loss

Appetite suppression

Type 2 diabetes management

Cardiovascular health

Week 1-4: 0.25mg once weekly

Week 5-8: 0.5mg once weekly

Week 9-12: 1mg once weekly

Week 13-16: 1.7mg once weekly

Week 17+: 2.4mg once weekly (max)

Subcutaneous injection, once weekly

FDA-approved for obesity

Most effective weight loss peptide

Dramatic appetite suppression

Common side effects: nausea, constipation

See our semaglutide vs tirzepatide guide and use our semaglutide dosage calculator.

Tirzepatide (Mounjaro/Zepbound)

Weight loss (more effective than semaglutide)

Type 2 diabetes

Appetite control

Week 1-4: 2.5mg once weekly

Week 5-8: 5mg once weekly

Week 9-12: 7.5mg once weekly

Week 13-16: 10mg once weekly

Week 17-20: 12.5mg once weekly

Week 21+: 15mg once weekly (max)

Dual GLP-1/GIP agonist

Slightly better weight loss than semaglutide

FDA-approved

Similar side effects to semaglutide

AOD 9604 (Fragment 176-191)

Fat loss (especially stubborn fat)

No appetite suppression

300-600mcg daily

Fasted morning injection preferred

Duration: 12-16 weeks

Fragment of growth hormone (fat-burning portion only)

No effect on blood sugar or insulin

Targets stubborn fat areas

Good for athletes who can't suppress appetite

Learn more in our AOD 9604 guide and HGH Fragment calculator.

Tesamorelin

Visceral (belly) fat reduction

HIV-associated lipodystrophy

Metabolic health

1-2mg daily

Duration: Ongoing for sustained benefits

FDA-approved for HIV lipodystrophy

Specifically targets visceral fat around organs

Doesn't affect subcutaneous fat as much

Excellent for metabolic syndrome

See our peptides for weight loss guide for complete fat loss protocols.

Anti-aging and longevity peptides

These peptides combat aging at cellular level.

Epithalon (Epitalon)

Longevity

Telomere lengthening

Sleep regulation (melatonin)

10mg per cycle

1mg daily for 10 days

Cycles: Every 3-6 months

Strong evidence for telomere lengthening

Used in anti-aging protocols

Well-tolerated

Improves sleep regulation (pineal gland function)

Thymosin Alpha-1

Immune system optimization

Anti-viral effects

Chronic illness support

0.5-1mg, 2-3 times per week

Duration: Ongoing or cycles

Powerful immune modulator

FDA-approved for hepatitis (Zadaxin)

Well-studied safety profile

Used in longevity protocols

Selank

Anxiety reduction

Cognitive enhancement

Neuroprotection

250-500mcg daily

Injectable or intranasal

Duration: 2-4 weeks, then break

Subcutaneous injection or intranasal spray

Developed in Russia

Anxiolytic without sedation

Improves focus and mental clarity

No dependence or withdrawal

Semax

Focus and concentration

Stroke recovery

Powerful nootropic

Increases BDNF (brain-derived neurotrophic factor)

Improves learning and memory

Sexual health peptides

These enhance libido, arousal, and sexual function.

PT-141 (Bremelanotide/Vyleesi)

Female sexual dysfunction (FDA-approved)

Male erectile dysfunction

Libido enhancement for both sexes

1-2mg, 45-90 minutes before sexual activity

Use as needed (not daily)

Works through CNS (brain), not vascular system

FDA-approved for female sexual dysfunction

Effective for both men and women

Side effects: nausea (common but temporary), flushing

Melanotan II

Tanning (primary)

Libido enhancement (secondary)

Duration: Ongoing for tanning maintenance

Causes significant skin darkening (permanent)

Increases libido as side effect

Nausea common initially

Safety concerns about long-term use

Kisspeptin

Natural testosterone support

Fertility enhancement

Libido increase

1-2mg, 2-3 times per week

Duration: Ongoing for hormonal support

Stimulates GnRH (gonadotropin-releasing hormone)

Can increase natural testosterone 15-30%

Useful for fertility issues

Research-stage peptide

See our peptides for men guide for male sexual health protocols.

Cognitive and neurological peptides

These enhance brain function, mood, and neuroprotection.

Cerebrolysin

Traumatic brain injury

Dementia and Alzheimer's support

5-10ml daily or every other day

Duration: 10-30 injections per course

Intramuscular injection (preferred) or slow IV infusion

Mixture of neuropeptides from porcine brain

Used clinically in Europe and Asia

Strong evidence for neurological recovery

Prescription medication in many countries

Dihexa

Memory improvement

Potential Alzheimer's treatment

5-10mg daily

Injectable or oral (both available)

Duration: Cycles of 4-8 weeks

Subcutaneous injection or oral

Extremely powerful nootropic (7 orders of magnitude more potent than BDNF)

Research stage (not FDA-approved)

Limited human data

Use with caution

N-Acetyl Semax Amidate

Advanced cognitive enhancement

Focus and mental clarity

Intranasal or injectable

Intranasal spray (preferred) or subcutaneous

More potent than regular Semax

Longer-lasting effects

Excellent for demanding cognitive work

Skin and cosmetic peptides (injectable)

These improve skin quality beyond topical application.

GHK-Cu (systemic)

Already covered in healing section, but worth noting for skin:

Improves skin quality throughout body

Hair growth and thickness

Anti-aging effects

Better results than topical for some people

Melanotan I (Afamelanotide)

Tanning without sun exposure

Protection against UV damage

Erythropoietic protoporphyria treatment

0.5-1mg daily until desired tan achieved

Then 0.5-1mg 2-3x weekly for maintenance

Safer than Melanotan II (no libido/nausea effects)

FDA-approved for EPP (rare condition)

Causes gradual tanning

Permanent skin darkening with continued use

Specialty and niche peptides

Less common but valuable for specific purposes.

Gonadorelin (GnRH)

Testosterone support

Maintaining testicular function during TRT

100-200mcg, 2-3 times daily (pulsatile dosing)

Duration: Ongoing alongside TRT if used for that purpose

Requires frequent dosing (mimics natural GnRH pulses)

Maintains natural hormone production

Used in fertility treatments

HCG (Human Chorionic Gonadotropin)

Fertility (both male and female)

Maintaining testicular size during TRT

Weight loss (controversial)

250-500 IU, 2-3 times per week

Duration: Depends on purpose

Prescription medication

Mimics LH (luteinizing hormone)

Well-established safety profile

Banned by WADA

DSIP (Delta Sleep-Inducing Peptide)

Stress reduction

Pain management

100-300mcg before bed

Duration: As needed for sleep support

Mixed evidence for effectiveness

Some users report excellent sleep

Others notice minimal effects

Very safe with no dependence

Vasoactive Intestinal Peptide (VIP)

Mold toxicity treatment

Immune regulation

50mcg, 4 times daily

Intranasal spray

Duration: 4-12 months for mold illness

Intranasal spray (not injectable typically)

Specialized use for biotoxin illness

Prescribed by mold-literate physicians

Expensive

Requires proper diagnosis

How to choose the right injectable peptide

With so many options, selection requires strategy.

Step 1: Define your primary goal

Ask yourself:

What's my #1 objective? (healing, muscle, fat loss, anti-aging, etc.)

Is this acute (injury) or ongoing (body composition, longevity)?

What timeline am I working with?

Match goal to category:

Injury = Healing peptides

Build muscle = Growth hormone peptides

Lose fat = Fat loss peptides

Look younger = Anti-aging + skin peptides

Better sex = Sexual health peptides

Sharper mind = Cognitive peptides

Step 2: Consider your experience level

Beginners start with:

BPC-157 (healing)

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

Semaglutide (fat loss, if you can get prescription)

Intermediate users can add:

TB-500 (healing)

AOD 9604 (fat loss)

PT-141 (sexual health)

Advanced users explore:

IGF-1 LR3 (muscle)

Multiple peptide stacks

Specialty peptides for specific conditions

Step 3: Evaluate safety profile

Safest peptides (extensive use, minimal sides):

BPC-157

TB-500

CJC-1295

Ipamorelin

GHK-Cu

Use with caution (more sides or less data):

GHRP-6 (prolactin increase)

Hexarelin (desensitization, cortisol)

IGF-1 LR3 (hypoglycemia risk)

Melanotan II (permanent tanning, nausea)

Step 4: Consider practical factors

Injection frequency:

Once weekly: Semaglutide, Tirzepatide

Daily: AOD 9604, Epithalon (during cycles)

Twice daily: BPC-157, KPV

2-3x daily: GHRP-6, GHRP-2

Choose based on your compliance: If you won't inject 3x daily consistently, pick different peptide.

Cost considerations:

Expensive: Semaglutide, Tirzepatide, Cerebrolysin

Moderate: TB-500, CJC-1295/Ipamorelin

Affordable: BPC-157, Melanotan II

Use our peptide cost calculator to budget properly.

Step 5: Stack strategically (if combining)

Synergistic stacks:

BPC-157 + TB-500 (healing)

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

Semaglutide + CJC/Ipa (fat loss with muscle preservation)

Semax + Selank (cognitive + anxiety)

Avoid redundancy:

Don't stack multiple GHRPs (Ipamorelin + GHRP-6 + Hexarelin = unnecessary)

Don't stack multiple GLP-1s (Semaglutide + Tirzepatide = no added benefit)

See our peptide stacks guide for complete protocols.

Injection best practices for all peptides

Regardless of which peptide you choose, proper injection technique matters.

Subcutaneous injection (most peptides)

Best sites:

Abdomen (2+ inches from navel)

Thighs (outer)

Love handles

Back of arms (harder to reach)

Technique:

Clean injection site with alcohol

Pinch skin to create fold

Insert needle at 45-90 degree angle

Inject slowly (2-3 seconds)

Remove needle, apply pressure

Intramuscular injection (some peptides)

Glutes (upper outer quadrant)

Thighs (vastus lateralis)

Deltoids (shoulders)

Clean injection site

Insert needle at 90 degrees (deeper than SubQ)

Aspirate (pull back plunger slightly to check for blood)

Inject slowly

Remove and apply pressure

Rotation and site management

Rotate injection sites:

Never use same spot twice in one week

Have 8-10 sites in rotation

Track sites if injecting multiple times daily

Avoid:

Injecting into scar tissue

Sites with visible inflammation

Areas with lumps from previous injections

Learn complete technique in our peptide injections guide.

Reconstitution and storage

Reconstitution:

Use bacteriostatic water (0.9% benzyl alcohol)

Calculate properly based on vial size

Inject water slowly down side of vial (don't spray directly on powder)

Swirl gently, don't shake

Storage after reconstitution:

Refrigerate at 2-8°C (36-46°F)

Protect from light

Use within 28-30 days for most peptides

Discard if cloudy or discolored

See our peptide reconstitution calculator for exact measurements and our how to reconstitute peptides guide for step-by-step instructions.

Safety considerations across all injectable peptides

General safety principles apply regardless of which peptide you use.

Start low, go slow

For any new peptide:

Start at lowest effective dose

Assess tolerance for 1-2 weeks

Increase gradually if needed

Don't rush to maximum dose

Example progression:

BPC-157: Start 250mcg 2x daily, can increase to 500mcg 2x daily if needed

CJC/Ipa: Start 200mcg each, can increase to 300mcg if no sides

Monitor for side effects

Common across peptides:

Injection site reactions (redness, swelling)

Headaches (especially GH peptides initially)

Water retention (GH peptides, GLP-1s)

Nausea (GLP-1s, Melanotan II)

When to stop:

Severe allergic reaction (hives, difficulty breathing)

Persistent severe side effects

Unexplained symptoms

Lack of improvement after reasonable trial

Get baseline and follow-up bloodwork

Before starting peptides:

Basic metabolic panel

Liver and kidney function

Thyroid panel

Relevant hormones (testosterone, IGF-1, etc.)

During use:

Follow-up testing every 3-4 months

Monitor markers relevant to your peptides

Adjust protocols based on results

Legal and regulatory awareness

Understand status:

FDA-approved peptides require prescription

Research peptides are gray area (legal to possess, not approved for human use)

Athletic drug testing includes most peptides (WADA banned)

See our are peptides legal guide for complete regulatory information.

Source quality products

Only use peptides with:

Third-party testing (Certificate of Analysis)

95% purity (ideally 98%+)

Proper storage and shipping (cold chain)

Reputable supplier

See our best peptide vendors guide for sourcing quality peptides.

Complete injectable peptides comparison table

Here's every peptide covered in this guide organized in one comprehensive reference table.

Healing and Recovery Peptides

Peptide

Primary Use

Typical Dose

Frequency

Duration

Difficulty

Safety

Tendon/gut healing

250-500mcg

2x daily

4-12 weeks

Beginner

Excellent

Deep tissue repair

5-10mg loading, 2-5mg maintenance

Weekly

8-16 weeks

KPV

Inflammation/gut

500-1,000mcg

Daily

Intermediate

Tissue regeneration/hair

1-2mg

3-5x weekly

Ongoing

Growth Hormone and Muscle Building Peptides

CJC-1295 (no DAC)

GH release/muscle

200-300mcg

Daily (before bed)

3-6 months

CJC-1295 (with DAC)

1-2x weekly

Very Good

GH release/sleep

GHRP-6

GH release/appetite

100-300mcg

2-3x daily

Good

GHRP-2

GH release

IGF-1 LR3

40-80mcg

Advanced

Moderate

Hexarelin

100-200mcg

4-8 weeks (cycles)

Fat Loss and Weight Management Peptides

Semaglutide

Weight loss/appetite

0.25-2.4mg (titrate up)

6-12 months

Tirzepatide

Weight loss (more effective)

2.5-15mg (titrate up)

AOD 9604

Fat loss (no appetite suppression)

300-600mcg

Daily (fasted)

12-16 weeks

Tesamorelin

Visceral fat reduction

Anti-Aging and Longevity Peptides

Epithalon

Telomere lengthening/longevity

1mg

Daily for 10 days

Quarterly cycles

Thymosin Alpha-1

Immune optimization

0.5-1mg

2-3x weekly

Ongoing/cycles

Selank

Anxiety/cognitive

2-4 weeks (break)

Semax

Sexual Health Peptides

PT-141

Libido/sexual function

As needed (45-90 min before)

On-demand

Melanotan II

Tanning/libido

Kisspeptin

Testosterone/fertility

Cognitive and Neurological Peptides

Cerebrolysin

Brain injury/dementia

5-10ml

Daily or every other day

10-30 injections

Dihexa

5-10mg

4-8 week cycles

Limited data

N-Acetyl Semax Amidate

Advanced cognitive

Specialty Peptides

Gonadorelin

HCG

250-500 IU

Varies

DSIP

Before bed as needed

As needed

Melanotan I

Safe tanning

Daily (loading), 2-3x weekly (maintenance)

Quick Reference Key

Difficulty Levels:

Beginner: Safe, simple dosing, minimal sides, well-tolerated

Intermediate: More complex dosing or some side effects to manage

Advanced: Requires experience, careful monitoring, or cycling

Safety Ratings:

Excellent: Extensive use, minimal side effects, well-studied

Very Good: Generally safe, some manageable side effects

Good: Safe when used properly, requires monitoring

Moderate: More significant side effects possible, use with caution

Limited data: Newer peptides, less human research available

Dosing Notes:

All doses are for subcutaneous injection unless noted

"Daily" typically means once daily unless specified

"Weekly" means once per week

Titration protocols (semaglutide, tirzepatide) start low and increase over weeks

How to use this table

Step 1: Find your category

Locate the category matching your primary goal (healing, muscle, fat loss, etc.)

Step 2: Compare options within category

Look at difficulty level (match your experience)

Check frequency (can you commit to 3x daily injections?)

Review duration (short cycles vs ongoing protocols)

Step 3: Cross-reference with detailed sections

Use table for quick overview

Read full peptide section above for complete information

Check our specific peptide guides for protocols

Step 4: Plan your protocol

Single peptide for beginners

Stack 2-3 synergistic peptides for advanced users

Use our calculators for exact dosing

This table gives you the complete injectable peptide landscape at a glance. Bookmark this page for quick reference when planning protocols.

The role of SeekPeptides in your injectable peptide journey

Navigating 100+ injectable peptides requires organization, accurate information, and proper tools. SeekPeptides provides everything you need.

Comprehensive guides: From BPC-157 to semaglutide, we provide detailed information on every major peptide.

Accurate calculators: Our peptide-specific calculators like BPC-157, TB-500, CJC-1295, and semaglutide ensure precise dosing.

Protocol planning: Our cycle planning guide and stacks guide help you combine peptides effectively.

Safety resources: From injection technique to safety and risks, we prioritize your wellbeing.

Complete education: Whether you're getting started or optimizing advanced protocols, we provide the knowledge you need.

You don't have to navigate 100+ injectable peptides alone. Use resources designed to help you choose wisely, dose accurately, and achieve your goals safely.

Final thoughts

The world of injectable peptides is vast.

Over 100 compounds available, each with specific uses, dosing protocols, and considerations.

This complete list organized by category gives you the reference you need. Healing peptides for injuries. Growth hormone peptides for muscle and anti-aging. Fat loss peptides for body composition. Cognitive peptides for mental performance. Sexual health peptides for intimacy. Specialty peptides for unique situations.

Choose based on your primary goal. Start with well-established, safe peptides. Use proper injection technique. Source quality products. Monitor your progress and adjust.

The right injectable peptide protocol can transform your health, performance, and quality of life. This comprehensive list ensures you choose wisely.

Your peptide journey starts with knowing your options. Now you have the complete list.

Helpful calculators for injectable peptides

Peptide calculator - Universal dosing calculator for all peptides

Peptide reconstitution calculator - Mix any peptide accurately

BPC-157 dosage calculator - BPC-157 specific dosing