31 Articles

Peptide Therapy Blog

Evidence-based guides and the latest research on peptide therapy, independently researched and editorially reviewed for patients who want to make informed decisions. See our editorial policy for sourcing standards.

PeptideProbe peptide guide title card reading “Orforglipron (Foundayo): The First GLP-1 Pill You Can Take Any Time of Day”
Peptide Guides

Orforglipron (Foundayo): The First GLP-1 Pill You Can Take Any Time of Day

Eli Lilly's orforglipron was approved in April 2026 as Foundayo — a once-daily GLP-1 pill with no food, water, or timing restrictions. A complete guide to how it works, the ~12.4% weight loss data, who it suits, side effects, cost including $50 Medicare access, and how it compares to injectables.

16 min readAugust 5, 2026
PeptideProbe peptide guide title card reading “MOTS-c: The Mitochondrial Peptide at the Frontier of Longevity Science”
Peptide Guides

MOTS-c: The Mitochondrial Peptide at the Frontier of Longevity Science

Discover MOTS-c, the mitochondrial-derived peptide showing remarkable promise for longevity, metabolic health, and exercise mimetic effects. Learn about the science, research, and clinical potential of this groundbreaking molecule.

19 min readRead
PeptideProbe peptide guide title card reading “Retatrutide: The Triple-Agonist Peptide That Could Make Semaglutide Obsolete”
Peptide Guides

Retatrutide: The Triple-Agonist Peptide That Could Make Semaglutide Obsolete

An in-depth guide to retatrutide, Eli Lilly's triple-agonist peptide targeting GLP-1, GIP, and glucagon receptors. Covers the TRIUMPH-1 Phase 3 result of roughly 24% weight loss, comparisons to tirzepatide and semaglutide, the FDA filing timeline announced in July 2026, and why you cannot get it yet.

20 min readRead
PeptideProbe peptide guide title card reading “GHK-Cu: Copper Peptide for Anti-Aging and Tissue Repair”
Peptide Guides

GHK-Cu: Copper Peptide for Anti-Aging and Tissue Repair

A comprehensive guide to GHK-Cu (copper peptide), the tripeptide-copper complex studied for gene expression, collagen signaling, skin applications, hair and joint research, and how to choose between topical and injectable forms.

18 min readRead
PeptideProbe peptide guide title card reading “Thymosin Alpha-1: The Immune-Boosting Peptide Your Doctor Should Know About”
Peptide Guides

Thymosin Alpha-1: The Immune-Boosting Peptide Your Doctor Should Know About

An in-depth guide to Thymosin Alpha-1 (Ta1), an internationally used thymic peptide studied for immune modulation. Learn about its clinical evidence, off-label use areas, age-related immune decline, post-COVID discussion, and the 2026 FDA reclassification landscape.

19 min readRead
PeptideProbe peptide guide title card reading “PT-141 (Bremelanotide): The Peptide for Sexual Health and Low Libido”
Peptide Guides

PT-141 (Bremelanotide): The Peptide for Sexual Health and Low Libido

A comprehensive guide to PT-141 (bremelanotide), the melanocortin-based peptide therapy for low libido and sexual dysfunction in both men and women. Learn how it works, FDA approval as Vyleesi, dosing, side effects, and how to find a qualified provider.

18 min readRead
PeptideProbe peptide guide title card reading “CJC-1295 and Ipamorelin: The Complete Guide to Growth Hormone Peptide Therapy”
Peptide Guides

CJC-1295 and Ipamorelin: The Complete Guide to Growth Hormone Peptide Therapy

A comprehensive guide to CJC-1295 and Ipamorelin peptide therapy covering growth hormone decline, mechanisms of action, benefits for muscle, fat loss, sleep, and skin, dosing protocols, comparison with synthetic HGH, and how to find a provider.

21 min readRead
PeptideProbe peptide guide title card reading “Semaglutide for Weight Loss: How It Works, What to Expect, and How to Find a Provider”
Peptide Guides

Semaglutide for Weight Loss: How It Works, What to Expect, and How to Find a Provider

A comprehensive guide to semaglutide for weight loss covering clinical evidence, GLP-1 mechanism of action, month-by-month timeline, side effects, brand vs compounded options, and finding a qualified provider.

22 min readRead
PeptideProbe peptide guide title card reading “BPC-157: The Complete Guide to the Body's Healing Peptide”
Peptide Guides

BPC-157: The Complete Guide to the Body's Healing Peptide

An in-depth guide to BPC-157 peptide therapy covering mechanisms of action, gut health benefits, musculoskeletal healing, neuroprotective properties, administration methods, safety, and how to find a qualified provider.

20 min readRead

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