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Learn by question

Peptide and GLP-1 guides

Start with the question you have. Each guide gives the short answer first, explains the evidence in plain language and links to the original sources.

Source: All 15 guides checked through 2026-08-22

What matters first

New to peptides
Start with the beginner’s guide
Everyday decisions
Alcohol, mental health and pregnancy
Popular claims
Skin, cancer and patches

Start here

New to peptides?

Learn the basic terms first, then move to the question you actually came with.

What are peptides?

A simple starting point: what peptides are, how the main types differ and what to check next.

Everyday questions

Questions about everyday life

Plain answers about alcohol, mental health and pregnancy, kept separate because the evidence differs.

GLP-1s and alcohol

What the human studies found about drinking, cravings and the questions they did not answer.

GLP-1s and pregnancy

How the current product labels address pregnancy, planned pregnancy and birth control.

Uses and evidence

Skin, body composition, cancer and related treatments

These topics are often grouped together, but the products and evidence differ. Each guide shows what was actually studied.

Peptides in skincare

What topical peptide studies tested, what they found and how skincare differs from an injection.

Peptides and cancer

Approved treatments, research approaches and the important difference between evidence and promotion.

Vitamin B12 shots

What B12 injections treat, when a pill may be enough and why clinic mixtures need exact names.

L-carnitine shots

The approved IV use, clinic-shot differences and the limits behind weight-loss claims.

Emerging formats

Patches and new delivery methods

Separate approved products, early research and online claims before treating them as the same thing.

GLP-1 patch brands

What the product listings say they contain and which claims deserve a closer look.