Anti-Aging
Peptides for skin: GHK-Cu, collagen peptides, and beyond
Which peptides actually work for skin? GHK-Cu, collagen peptides, Matrixyl, Argireline — what dermatology research supports and what's just marketing.
GHK-Cu for hair loss: what the research shows
Copper peptides are trending in hair restoration. What the dermal papilla studies, clinical trials, and animal data actually demonstrate.
Epithalon: the longevity peptide
A tetrapeptide linked to telomerase activation and lifespan extension in animal studies — what's proven, what's not, and why replication matters.
MOTS-c: the mitochondrial peptide reshaping how we think about metabolism
A 16-amino-acid peptide encoded by mitochondrial DNA — linked to AMPK activation, exercise adaptation, and aging. What the research actually supports.
GHK-Cu: the copper peptide exploding in search
Up 1,000%+ in search volume year-over-year. What the dermatology and longevity research actually says about this trending compound.
Legal & Regulation
RFK Jr. and FDA peptide regulation: what actually changed in 2026
The FDA banned 19 peptides from compounding pharmacies in 2023. Now HHS Secretary Kennedy says 14 are coming back. Full timeline, affected peptides, and what it means for patients.
Are peptides legal in 2026?
FDA regulations, the research chemical loophole, state-by-state variations, and what the Peptide Sciences shutdown means for the market.
Sourcing & Safety
Peptide side effects and safety: what you need to know
Common side effects by peptide category, how to minimize risk, red flags that require medical attention, and what the research says about long-term safety.
Peptide storage and handling: how to keep your peptides potent
How to store peptides before and after reconstitution. Temperature, light, moisture, and handling best practices to maintain potency and safety.
How to reconstitute peptides: a step-by-step guide
Everything you need to safely mix, measure, and store lyophilized peptides — with a simple dosing formula you can use every time.
Peptide Sciences shut down: what happened and what to do now
The largest US research peptide vendor closed in March 2026. What we know, what it means, and how to find a trustworthy alternative.
How to source quality peptides safely
What to look for in a peptide vendor, how to read a Certificate of Analysis, and red flags that should send you running.
Peptide Profiles
Peptide stacking: how to combine peptides by goal
Which peptides work together, which don't, and what the research actually supports about combining peptides for recovery, anti-aging, body composition, and cognition.
BPC-157 vs TB-500: which peptide is better for recovery?
BPC-157 vs TB-500 compared — mechanisms, research evidence, injury types, and which healing peptide the data actually supports for your recovery goals.
KLOW peptide blend: dosage, side effects, and what the research says
KLOW combines BPC-157, TB-500, GHK-Cu, and KPV in one vial. We break down each ingredient, the evidence, safety concerns, and how it compares to GLOW.
Thymosin alpha-1: the immune-modulating peptide
One of the most clinically studied peptides in existence — approved in 35+ countries, with real human trial data for immune modulation.
PT-141 (bremelanotide): what the research says
The first centrally-acting peptide for sexual dysfunction — FDA-approved, with a novel mechanism that works through the brain, not blood flow.
KPV: the anti-inflammatory peptide for gut health
A tripeptide derived from alpha-MSH that targets NF-κB — the master switch of inflammation. What the gut health and dermatology research shows.
Ipamorelin vs. sermorelin: comparing growth hormone peptides
Two popular GH secretagogues targeting different receptors. Mechanism, selectivity, clinical data, and which one the research favors for different goals.
DSIP: the delta sleep-inducing peptide
A nonapeptide studied for sleep modulation, stress response, and hormone regulation — what the published human data shows and where the gaps remain.
CJC-1295 & Ipamorelin: the growth hormone peptide stack
Two peptides targeting different parts of the growth hormone pathway — how they work, why they're combined, and the safety data most sites skip.
Best peptides for injury recovery: a research-backed comparison
BPC-157, TB-500, GHK-Cu, and more — what the evidence supports for tendon repair, muscle healing, and soft tissue recovery.
BPC-157: complete research guide
Mechanisms of action, animal vs. human evidence, dosing protocols, and what the research actually supports for this widely-discussed healing peptide.
TB-500: benefits, research, side effects & legal status
How TB-500 differs from BPC-157, what the research shows for tissue repair, and what you need to know about its regulatory status.
Weight Loss
GLP-1s for 10 pounds: is Ozempic worth it for small weight loss?
Not obese but want to lose 10 lbs? What happens when you use semaglutide for small weight loss — the muscle math, the regain data, and why lifestyle may be the better play.
GLP-1 pills vs. injections: how oral Wegovy changes the equation
The FDA approved the first GLP-1 pill for weight loss. How oral semaglutide compares to the injection on efficacy, side effects, cost, and daily life.
Microdosing GLP-1s: what the research actually says
A growing number of people are taking semaglutide and tirzepatide at sub-therapeutic doses. Real-world data, clinical evidence, risks, and what low-dose protocols actually deliver.
Retatrutide: the triple-agonist weight loss peptide
The first triple hormone receptor agonist has produced 28.7% average weight loss in Phase 3 trials. How retatrutide works, clinical data, side effects, dosing, and how it compares to semaglutide and tirzepatide.
AOD-9604: the fat loss peptide fragment
A modified fragment of human growth hormone targeting fat metabolism without HGH's broader effects. Phase II trial data, mechanism, and honest limitations.
Protein timing on GLP-1 medications: why when you eat matters as much as how much
Your body can only use so much protein at once. On semaglutide or tirzepatide, the timing of your protein intake becomes the difference between preserving muscle and losing it.
The GLP-1 appetite cycle explained: what happens to your hunger each day after injection
Day-by-day guide to appetite changes, side effects, energy levels, and practical eating strategies across the weekly semaglutide and tirzepatide injection cycle.
GLP-1 peptides: how they work for weight loss
Semaglutide, tirzepatide, and retatrutide — mechanisms, efficacy data, and the science behind the biggest pharmaceutical story of the decade.
Beginner Guides
What is peptide cycling? Why timing matters
On-and-off scheduling explained: why people cycle peptides, common protocols by peptide type, and what the science says about receptor desensitization.
What are peptides? A beginner's guide
Everything you need to know about peptides before diving deeper. What they are, how they work, and why they matter.