Your NAD+ questions, answered

What the cited studies measured, in whom and in which form, and why a photo is not evidence.

What determines the per-vial price, how to read quotes given in different units, and why it is cash-pay.

Injection-site and allergic reactions, flushing and nausea with rapid infusion, what to report the same day, and what the physician asks first.

No approved label means no dosage chart. How a physician sets dose, route and schedule, and what a vial concentration means.

The coenzyme, the forms a pharmacy dispenses, and how an injection differs from an oral precursor.