The FDA has proposed permanently excluding tirzepatide (along with semaglutide and liraglutide) from large-scale 503B compounding, and on June 26, 2026 it extended the public comment deadline on that proposal from June 30 to July 30, 2026
Severe deficiency symptoms include vitamin E deficiency-induced ataxia, peripheral neuropathy, muscle weakness, and damage to the retina of the eye
The concept differs fundamentally from how prescription GLP-1 receptor agonists work
Potential side effects could range from mild to severe, including allergic reactions, injection site complications, and systemic effects
Repeat dose NRPT (nicotinamide riboside and pterostilbene) increases NAD+ levels in humans safely and sustainably: a randomized, double-blind, placebo-controlled study