nad injections and tirzepatide vs Tirzepatide/NAD+ NAD Injection vs Pills: Are
Description
Fewer Glucose Excursions The amplitude of blood sugar swings declined significantly

That study also appeared in JAMA Ophthalmology
That said, as always, the key question is translatability

Common side effects associated with green tea supplements include: Nausea, vomiting, and abdominal discomfort Headaches and dizziness Insomnia and sleep disturbance Increased heart rate and palpitations Elevated blood pressure Of particular concern is the association between high-dose green tea extracts and hepatotoxicity (liver damage)
NAD+ depletion isn't universal