Cost Per Day Is the Only Supplement Price That Means Anything
Two supplements at the same price can differ fivefold in what they actually cost you, and the label tells you exactly why — if you do one piece of arithmetic.
Why bottle price misleads
Bottle price combines three variables that vary independently: how many capsules are inside, how many you take per day, and how much active ingredient each contains. Comparing two products on price alone compares nothing useful.
The calculation
Servings per container divided by servings per day gives days of supply. Delivered price divided by days of supply gives cost per day. Two numbers off the label and one off the checkout page.
The trap is serving size. A bottle of 60 capsules at a serving size of two is a 30-day supply, not 60. Products with generous-looking amounts per serving frequently require three or four capsules to reach them.
Then add the second dimension
Cost per day tells you what you are spending. It does not tell you what you are getting. For that, calculate the active ingredient per day and set the two side by side.
This is where products separate. Two turmeric supplements at the same cost per day can deliver 35 mg and 600 mg of curcuminoids respectively, and nothing on the front of either bottle would tell you.
Use delivered price, not sticker price
Shipping is frequently charged on small quantities and waived on large ones, which quietly widens the gap between tiers. Compare what leaves your account.
The tier trap
Larger kits almost always show a lower cost per day, and that arithmetic is real. But it assumes you finish them.
A six-month kit abandoned at week seven has a far worse real cost per capsule taken than the single bottle would have. Adherence belongs in the calculation, and honest self-assessment about whether you will still be taking something in month four is part of the sum.
The version to remember
Delivered price ÷ days of supply = cost per day. Active ingredient per serving × servings per day = what you get per day. Put those two numbers next to each other for every product you are considering, and most of the shelf disqualifies itself before you look at anything else.
What it does not tell you
Whether the ingredient works, whether the dose is meaningful, or whether the manufacturer is reliable. It is a filter, not a verdict — but it is a fast one, and it removes a great deal before you spend effort on the harder questions.
Sources
Work Out What It Costs You Per Day
Kit price divided by days of supply is the only figure that lets you compare this against anything else on the shelf. Our pricing page runs that arithmetic for all three kits and lists the conflicting numbers we found.
See the Cost Breakdown →