The D-Phe stereochemistry and Nle substitution were specifically selected to resist enzymatic proteolysis, as established in the precursor work (Sawyer 1980, PMID 6777774)
There isnt a set amount of protein to eat on tirzepatide, but youll want to eat plenty to maintain muscle mass as you lose weight
At minimum, take vitamin D3 (2,000-4,000 IU), vitamin B12 (500-1,000 mcg), magnesium (200-400 mg), protein supplement (to reach 1.2-2.0 g/kg daily), and fiber (10-15 grams)
Previous periods of euglycemia were not reported to improve his psoriasis
Drink more water, take a daily multivitamin (I personally recommend a prenatal vitamin for everyone, it covers iron, B12, and vitamin D), and move even when you dont feel like it