Retatrutide 64mg

A Retatrutide 64 mg pen is a pre-filled injection pen containing the peptide retatrutide, which is being researched as a powerful weight-loss and metabolic drug. It’s designed to be injected once per week under the skin (abdomen, thigh, or arm).

What Retatrutide does

Retatrutide is a “triple-agonist” hormone drug that activates three metabolic pathways:

GLP-1 receptor → suppresses appetite

GIP receptor → improves insulin sensitivity

Glucagon receptor → increases energy expenditure

Because it targets three pathways at once, it may cause stronger weight-loss effects than older drugs like semaglutide or tirzepatide.

Typical dosing (example used with 64 mg pen)

Many protocols gradually increase the dose:

Weeks 1–4: ~2 mg once weekly

Weeks 5–8: ~4 mg once weekly

Weeks 9+: ~8 mg weekly maintenance

This slow increase helps reduce side effects like nausea.

Important safety warning

Retatrutide is still in clinical trials and not approved for public use yet.

Any pens sold online or privately are unregulated or black-market products, which may have incorrect doses or contamination risks.

Possible side effects

Common ones reported in studies or similar GLP-1 drugs:

nausea

vomiting

diarrhea

reduced appetite

fatigue

low blood sugar (especially with diabetes meds