Comparisons & Reviews
14 articles with genetic insights and evidence-tiered analysis.
Sermorelin vs CJC-1295: Why One Has 25 Years of Data and the Other Has One Study
Sermorelin vs CJC-1295: which GHRH analog actually has the data? One ran FDA trials for 25 years. The other has one Phase I study and an unresolved cardiac flag.
CJC-1295 With DAC vs Without DAC: Why the Most Popular GH Stack Is Using the Wrong Version
CJC-1295 with DAC vs without DAC: most protocols treat them as interchangeable. They aren't. One raises your GH floor 750%. The other fires a single pulse. Here's which version your protocol needs.
SS-31 vs BPC-157 for Brain Injury: Mitochondria vs Nitric Oxide
SS-31 just became FDA approved. BPC-157 faces a US compounding ban. Here is how their brain injury mechanisms differ and which one you should reach for first.
Tesamorelin vs MK-677 vs CJC-1295: Which GH Peptide Actually Changes Body Composition?
Which GH peptide actually burns fat in RCTs? Tesamorelin has Phase III trial data. MK-677 added lean mass but not fat loss. CJC-1295 has never completed a body composition trial.
Tirzepatide vs Retatrutide vs Semaglutide: Which GLP Agonist Wins by Genotype?
In the only head-to-head RCT, tirzepatide beat semaglutide 20.2% vs 13.7% body weight loss. Retatrutide hits 28%. GLP1R variants relate to the receptor these agonists act on.
BPC-157 vs TB-500 for Muscle Injury: Which One Rebuilds Faster?
BPC-157 just entered its first human RCT for muscle injury. TB-500 has never had one. The evidence on recovery speed, tissue specificity, and which to use first.
PT-141 vs Testosterone for Low Libido in Men: Which One Actually Works?
Can PT-141 fix low libido that testosterone therapy could not? Yes, but only because they target completely different problems. Here is how to know which one you actually need.
GHK-Cu vs Retinol vs Vitamin C: Which Skin Repair Compound Wins on Clinical Trials?
Which skin repair compound wins on RCT evidence: GHK-Cu, retinol, or vitamin C? Retinol has 8 pooled RCTs. GHK-Cu has zero. Your skin genetics predict which gap to close first.
Semax vs Selank: Which Actually Works for Anxiety and Focus?
Semax for focus, Selank for anxiety. Both clear from your blood in 5 minutes. Here is the symptom-first guide to choosing, plus how your BDNF and COMT genes change the math.
7 Things 23andMe Won't Tell You About Peptide Genetics
How accurate is your DNA test for peptide response? 23andMe directly genotypes just 0.02% of your genome. Here is what your kit misses, and where it actually gets it right.
KPV vs LL-37: The Two Peptides Quietly Replacing Topical Steroids
KPV and LL-37 both fight skin inflammation without thinning your skin. But they target opposite biology, and a 2024 JCI study found the wrong choice can accelerate heart disease.
Ipamorelin vs CJC-1295: Same Goal, Very Different Biology
Ipamorelin fires a clean GH pulse that peaks at 40 minutes. CJC-1295 keeps GH elevated for six days per injection. GHSR and GHR variants relate to the pathway each one acts on.
SelfDecode Peptide Report Review: Is It Worth $418/Year?
SelfDecode offers a peptide response report as part of their subscription platform. We break down what you get, what you don't, and how it compares to a dedicated genetic peptide test.
PlexusDx vs PeptidesDNA: Which Genetic Peptide Test Should You Choose?
Two companies now offer DNA-to-peptide matching. Here's an honest comparison of PlexusDx and PeptidesDNA: what each test covers, how they differ, and which one fits your needs.