Protocol MD

Research & Guides

The peptide library, written by clinicians.

48 long-form articles on peptide therapy — what each compound does at the cellular level, who it's for, what the FDA says about it, and where the gray-market vendors get the story wrong. Every guide is reviewed by a US-licensed physician and updated as evidence evolves.

Articles

48

Categories

4

Avg Read

9 Min

Updated

2026

Pharmaceutical-grade NAD+ prepared for a physician-prescribed injection

Featured · Longevity

NAD+ Injections Before and After: What to Realistically Expect

What the before and after of NAD+ actually looks like: the real timeline, the benefits the evidence supports, the side effects, and what NAD+ won't do.

Dr. Richard Dentico, MD · 11 min read

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Man sleeping peacefully in morning sunlight — pulsatile growth hormone release during deep sleep is the mechanism sermorelin is designed to restore, unlike exogenous HGH.

Strength · 12 min read

Sermorelin vs HGH: The Real Difference, Explained

Sermorelin and HGH both raise growth hormone — but in opposite ways. One signals your own pituitary to release GH in its natural pulsatile rhythm; the other floods the hormone in directly and bypasses your feedback loop. Here's the difference that actually matters.

A medical syringe filled with blue liquid on a light background

Longevity · 7 min read

NAD Injections Near Me: Do You Actually Need a Clinic Nearby?

Searching "NAD injections near me"? You may not need a clinic at all. The honest comparison of local IV bars vs. physician-prescribed at-home NAD injections shipped nationwide — cost, oversight, and how to choose.

Water droplets on a clear surface — glutathione, the body's master antioxidant, working at the cellular level.

Longevity · 8 min read

Glutathione Benefits: What the "Master Antioxidant" Actually Does

Glutathione is your body's master antioxidant and a liver-detox cofactor — that part's settled. The disease 'benefits' are mostly still being studied. A physician-reviewed look at what's real, plus why delivery route decides whether you benefit at all.

What Lowers Testosterone? The Evidence-Based List (and the Myths That Don't Hold Up)

Strength · 12 min read

What Lowers Testosterone? The Evidence-Based List (and the Myths That Don't Hold Up)

Alcohol, poor sleep, obesity, chronic stress, and certain medications genuinely lower testosterone. Masturbation and vasectomies don't. A physician's evidence-vs-myths breakdown.

Does Sermorelin Increase Testosterone? A Physician's Honest Answer

Strength · 9 min read

Does Sermorelin Increase Testosterone? A Physician's Honest Answer

Sermorelin is a GHRH analog — it works on your GH axis, not your testosterone. Here's what the science actually shows, where the confusion comes from, and when you need a different conversation.

Glutathione Injection: What It Is, How It Works, and Why Route Matters

Longevity · 12 min read

Glutathione Injection: What It Is, How It Works, and Why Route Matters

Glutathione injection bypasses the GI tract to deliver the body's master antioxidant directly. Physician-prescribed, 503A compounded. Book a free consult.

503A US PharmacyPhysician-PrescribedUSP-Compliant Compounding

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