Compound Comparison

Peptide Basics — 8 of 8

Compound Comparison

Peptide Basics

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Side-by-side reference for 15 commonly researched peptide compounds — covering type, amino acid count, half-life, route, mechanism, stability, and typical research dosing.

All dose ranges are from published research literature. This is not dosing advice. For research reference only.

Showing 15 of 15 compounds

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
BPC-157	Tissue Repair	15	~4 hrs (SubQ)	SubQ / Oral	Moderate	Tendon/muscle repair, gut, neuroprotection	200–500 mcg/day
CJC-1295	GH/IGF-1 Axis	30	6–8 days (DAC)	SubQ	High	GH deficiency, muscle, anti-aging	1–2 mg/wk
DSIP	Sleep	9	~30 min	SubQ / IV	Low	Sleep quality, insomnia, stress	100–600 mcg
Epithalon	Longevity	4	~30 min	SubQ / IV	Moderate	Telomere extension, sleep, lifespan	5–10 mg total course
GHK-Cu	Skin / Repair	3	Minutes (topical)	Topical / SubQ	High	Skin aging, wound healing, hair growth	Topical: 0.01–1%
GLP-1	Metabolic	30	~2 min (native)	SubQ (analogs)	Low	Obesity, T2DM, cardiovascular	Analog-dependent
IGF-1 LR3	GH/IGF-1 Axis	83	20–30 hrs	SubQ / IM	Low	Muscle hypertrophy, cellular repair	20–60 mcg/day
Ipamorelin	GH/IGF-1 Axis	5	~2 hrs	SubQ	Moderate	GH secretion, body composition	100–300 mcg/day
Melanotan II	Tanning/Sexual	7	~3–4 hrs	SubQ	Moderate	Skin pigmentation, libido, appetite	250–500 mcg (load)
PT-141	Sexual Function	7	~2.5 hrs	SubQ / Nasal	Moderate	Erectile/arousal dysfunction (FDA approved)	0.5–2 mg per use
Selank	Neuro / Cognitive	7	~1–2 hrs	Nasal / SubQ	Moderate	Anxiety, cognition, nootropic	250–900 mcg/day
Semaglutide	Metabolic	31	~168 hrs (7 days)	SubQ / Oral	High	Obesity (Wegovy), T2DM (Ozempic)	0.25–2.4 mg/wk
Semax	Neuro / Cognitive	7	~20 min (nasal)	Nasal / SubQ	Moderate	Cognitive enhancement, stroke recovery	200–900 mcg/day
TB-500	Tissue Repair	17	Unknown (days?)	SubQ / IM	Moderate	Soft tissue, cardiac, neurological repair	2–5 mg/wk
Thymosin α1	Immune	28	~2 hrs	SubQ	Moderate	Immune modulation, viral infections	1.6 mg 2×/wk

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
CJC-1295	GH/IGF-1 Axis	30	6–8 days (DAC)	SubQ	High	GH deficiency, muscle, anti-aging	1–2 mg/wk
IGF-1 LR3	GH/IGF-1 Axis	83	20–30 hrs	SubQ / IM	Low	Muscle hypertrophy, cellular repair	20–60 mcg/day
Ipamorelin	GH/IGF-1 Axis	5	~2 hrs	SubQ	Moderate	GH secretion, body composition	100–300 mcg/day

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
Thymosin α1	Immune	28	~2 hrs	SubQ	Moderate	Immune modulation, viral infections	1.6 mg 2×/wk

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
Epithalon	Longevity	4	~30 min	SubQ / IV	Moderate	Telomere extension, sleep, lifespan	5–10 mg total course

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
GLP-1	Metabolic	30	~2 min (native)	SubQ (analogs)	Low	Obesity, T2DM, cardiovascular	Analog-dependent
Semaglutide	Metabolic	31	~168 hrs (7 days)	SubQ / Oral	High	Obesity (Wegovy), T2DM (Ozempic)	0.25–2.4 mg/wk

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
Selank	Neuro / Cognitive	7	~1–2 hrs	Nasal / SubQ	Moderate	Anxiety, cognition, nootropic	250–900 mcg/day
Semax	Neuro / Cognitive	7	~20 min (nasal)	Nasal / SubQ	Moderate	Cognitive enhancement, stroke recovery	200–900 mcg/day

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
PT-141	Sexual Function	7	~2.5 hrs	SubQ / Nasal	Moderate	Erectile/arousal dysfunction (FDA approved)	0.5–2 mg per use

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
GHK-Cu	Skin / Repair	3	Minutes (topical)	Topical / SubQ	High	Skin aging, wound healing, hair growth	Topical: 0.01–1%

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
DSIP	Sleep	9	~30 min	SubQ / IV	Low	Sleep quality, insomnia, stress	100–600 mcg

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
Melanotan II	Tanning/Sexual	7	~3–4 hrs	SubQ	Moderate	Skin pigmentation, libido, appetite	250–500 mcg (load)

Compound	Category	AAs	Half-life	Route	Stability	Research Area	Dose Range
BPC-157	Tissue Repair	15	~4 hrs (SubQ)	SubQ / Oral	Moderate	Tendon/muscle repair, gut, neuroprotection	200–500 mcg/day
TB-500	Tissue Repair	17	Unknown (days?)	SubQ / IM	Moderate	Soft tissue, cardiac, neurological repair	2–5 mg/wk

BPC-157

Gastric peptide fragment

Tissue Repair

AAs

Half-life

~4 hrs (SubQ)

Route

SubQ / Oral

Stability

Moderate

Research: Tendon/muscle repair, gut, neuroprotection

Dosing: 200–500 mcg/day

CJC-1295

GHRH analog

GH/IGF-1 Axis

AAs

Half-life

6–8 days (DAC)

Route

SubQ

Stability

High

Research: GH deficiency, muscle, anti-aging

Dosing: 1–2 mg/wk

DSIP

Delta sleep-inducing peptide

Sleep

AAs

Half-life

~30 min

Route

SubQ / IV

Stability

Low

Research: Sleep quality, insomnia, stress

Dosing: 100–600 mcg

Epithalon

Pineal tetrapeptide

Longevity

AAs

Half-life

~30 min

Route

SubQ / IV

Stability

Moderate

Research: Telomere extension, sleep, lifespan

Dosing: 5–10 mg total course

GHK-Cu

Copper peptide

Skin / Repair

AAs

Half-life

Minutes (topical)

Route

Topical / SubQ

Stability

High

Research: Skin aging, wound healing, hair growth

Dosing: Topical: 0.01–1%

GLP-1

Incretin hormone

Metabolic

AAs

Half-life

~2 min (native)

Route

SubQ (analogs)

Stability

Low

Research: Obesity, T2DM, cardiovascular

Dosing: Analog-dependent

IGF-1 LR3

IGF-1 analog (long-acting)

GH/IGF-1 Axis

AAs

Half-life

20–30 hrs

Route

SubQ / IM

Stability

Low

Research: Muscle hypertrophy, cellular repair

Dosing: 20–60 mcg/day

Ipamorelin

GHRP / ghrelin mimetic

GH/IGF-1 Axis

AAs

Half-life

~2 hrs

Route

SubQ

Stability

Moderate

Research: GH secretion, body composition

Dosing: 100–300 mcg/day

Melanotan II

Melanocortin analog

Tanning/Sexual

AAs

Half-life

~3–4 hrs

Route

SubQ

Stability

Moderate

Research: Skin pigmentation, libido, appetite

Dosing: 250–500 mcg (load)

PT-141

Melanocortin agonist

Sexual Function

AAs

Half-life

~2.5 hrs

Route

SubQ / Nasal

Stability

Moderate

Research: Erectile/arousal dysfunction (FDA approved)

Dosing: 0.5–2 mg per use

Selank

Anxiolytic peptide

Neuro / Cognitive

AAs

Half-life

~1–2 hrs

Route

Nasal / SubQ

Stability

Moderate

Research: Anxiety, cognition, nootropic

Dosing: 250–900 mcg/day

Semaglutide

GLP-1 analog (long-acting)

Metabolic

AAs

Half-life

~168 hrs (7 days)

Route

SubQ / Oral

Stability

High

Research: Obesity (Wegovy), T2DM (Ozempic)

Dosing: 0.25–2.4 mg/wk

Semax

ACTH analog fragment

Neuro / Cognitive

AAs

Half-life

~20 min (nasal)

Route

Nasal / SubQ

Stability

Moderate

Research: Cognitive enhancement, stroke recovery

Dosing: 200–900 mcg/day

TB-500

Thymosin Beta-4 fragment

Tissue Repair

AAs

Half-life

Unknown (days?)

Route

SubQ / IM

Stability

Moderate

Research: Soft tissue, cardiac, neurological repair

Dosing: 2–5 mg/wk

Thymosin α1

Thymic peptide

Immune

AAs

Half-life

~2 hrs

Route

SubQ

Stability

Moderate

Research: Immune modulation, viral infections

Dosing: 1.6 mg 2×/wk

Research Category Guide

Tissue Repair

Regeneration, angiogenesis, and repair peptides

Metabolic

Weight, blood sugar, appetite, and energy regulation

GH/IGF-1 Axis

Growth hormone secretagogues and mediators

Longevity

Telomere, epigenetic, and lifespan research

Sexual Function

Central and peripheral sexual function peptides

Neuro / Cognitive

Brain function, memory, stress, anxiety

Immune

Immune modulation, anti-viral, inflammation

Skin / Repair

Collagen, wound healing, dermal peptides

Sleep

Sleep architecture and quality modulators

Tanning/Sexual

Melanocortin pathway peptides

Quick Reference

Educational Content Only. All Peptide Basics content is for research and educational purposes only. Nothing constitutes medical advice or instructions for human use.

Compound Comparison

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