Both reference labels identify NR
The product names can make this look like a comparison between NR and direct NAD+. Read the Supplement Facts: the reference products identify nicotinamide riboside chloride. This is a comparison of oral NR supplements, not a capsule-versus-injection comparison.
A shared ingredient does not mean every package in either brand’s catalog is identical. Check the exact strength, serving information, additional ingredients and capsule count of the item in your cart. This page does not compare every strength or combination product sold by the two companies.
Separate bottle price from recurring cost
Life Extension distinguishes one-time purchasing from AutoShip, with a delivery interval selected by the buyer. Tru Niagen also has different package and recurring-purchase options. Keep a one-time bottle quote separate from a subscription discount.
The simplest comparison is the total checkout amount for the same capsule count and strength, including any shipping and tax. Then record the next charge and the delivery frequency. Dividing a bottle price by its capsule count is purchasing arithmetic; it is not advice about how many capsules to take.
An ingredient study is not a brand contest
Research that measures an NAD-related biomarker after NR supplementation answers an ingredient-and-endpoint question. It does not, by itself, demonstrate that one retail brand produces better energy, concentration or long-term health outcomes than another.
Choose the comparison criteria you can actually verify: label clarity, the selected purchase terms and the evidence relevant to your question. Read the biomarker explainer before turning an advertised increase into a prediction about how you will feel. Personal suitability belongs in a discussion with a qualified healthcare professional.
Useful next steps
Our assessment uses published product information and terms, not personal treatment experience or a head-to-head clinical study. Read our editorial standards.