Begin with the billing interval
An NAD+ offer can display a monthly figure while collecting several months of payment at once. The first question is therefore when the money leaves your account. A monthly equivalent is useful arithmetic, but it does not describe the charge date, prescription quantity or conditions for ending the plan.
Record the published equivalent, the number of months covered and the billing interval before applying a coupon. Keep a separate line for the amount due today. If the source does not connect these details clearly, request a written estimate rather than treating the largest number on the page as a complete quote.
A worked example from Effecty
Effecty's checked NAD+ pages show a three-month plan at a $175 monthly equivalent and a $100 first-order reduction. The base period is therefore $525. Applying the stated reduction gives $425, which averages approximately $141.67 per month over that introductory period. The page rounds the promotional headline to about $142.
This calculation explains how a headline can coexist with a higher regular rate. It does not confirm a completed transaction or guarantee promotion eligibility. Verify the selected product and final charge. If the same base three-month rate applies at renewal without another discount, the next period would return to $525 rather than repeat the introductory $425.
Separate savings from commitment
The same provider lists $165 and $160 monthly equivalents for six- and twelve-month choices. Multiplication produces base commitments of $990 and $1,920 before any applicable promotion. Those totals belong beside the equivalents when comparing plans, because a lower monthly number can require a much larger initial payment.
Ask what happens to that payment if a clinician changes the recommendation or treatment ends early. The answer may differ for future renewals, unprocessed orders and dispensed medication. A favorable rate does not, by itself, establish a right to return unused supplies or recover the unused portion of a prepaid service.
Keep unlike offers out of the same calculation
IVY RX's checked NAD+ injection offer starts at $179 with variable use. Its nasal listing refers to thirty sprays. Neither description automatically supplies the monthly denominator needed for the same arithmetic. Entering either as a recurring thirty-day charge would create precision that the public offer does not support.
Request the prescription's intended supply period and the refill schedule before estimating a year. Also ask whether shipping, assessment, laboratory work or follow-up adds costs beyond the displayed medication offer. Leave unanswered fields blank or marked unconfirmed; a missing fee should never become an assumed zero merely to finish a spreadsheet.
Save a quote that can be checked later
Before enrollment, keep the selected plan name, first charge, renewal amount, next charge date and cancellation instructions together. Include the promotion's conditions and the exact product route. This creates a useful record if a later invoice differs from the offer you understood, without relying on an old search snippet.
Use the site's cost worksheet for arithmetic once those inputs are known. The calculation is a budgeting tool, not a recommendation for a particular route or duration. A clinical decision should determine whether treatment is appropriate; the commercial comparison should make the cost of that decision understandable.
Sources & further reading
Official pages and evidence consulted for this article. Checked October 11, 2026. Provider pages establish advertised terms; they do not independently establish effectiveness.