A 120 tablet bottle of copper at $29.90 works out to $0.25 per dose when the label asks for one tablet a day, while a 60 tablet bottle at $19.90 costs $0.33 for the same 1000 mcg. The cost per serving is what you pay to stay on the supplement, and it rarely matches the number on the shelf edge.
Divide the pack into doses before you compare prices
Price per capsule rewards the wrong thing. Capsules are a delivery vehicle: what matters is how many doses a pack holds and how many the label asks you to take each day. A 100 capsule container with a two capsule dose is really a 50 dose container, which doubles your working cost the moment you open it. Doses per container, price, one division, done. That single figure survives every packaging trick a brand can throw at you.
Copper makes this clear because the daily need is small. Adult intake guidance sits around 900 mcg, so a tablet carrying 1000 mcg covers a full day, and a container of 120 is a four month supply.
Copper costs little per day, but formation matters
Formation and dose units change what you get. Our tablets are supplied as copper glycinate, 1000 mcg per one tablet dose, in a container listing 120 tablets. Copper sulfate delivers the same element at a lower raw material cost and is harder on some people's stomach; chelated forms such as glycinate are more stable but won't do much to your price per day. This is where shoppers bleed money without noticing, because the cheapest option and the mid-priced one are often within a few cents of each other daily. Tablets are small and get taken with water at a meal, which matters if you also take zinc, since the two minerals compete for the same absorption pathway and are best split by two or three hours.
A worked example with three options
Say you're comparing three mineral products. Option A holds 120 units for $29.90, one unit per dose. Option B holds 60 units for $19.90, one unit per dose. Option C holds 180 units for $34.90, three units per dose. Per unit, B looks cheap and C looks like the best value. Per dose, A is $0.25, B is $0.33 and C is $0.58, so the smallest pack carries the highest daily cost and the largest carries more than twice the cost of the middle one. That reversal happens constantly. It's a good reason to keep a calculator open while you shop. Price per day also moves when you stop and start: someone who buys three containers at once and then runs out for a month pays more per day of actual use than someone who buys one and finishes it.
What price per day cannot tell you
This figure covers cost, not suitability. Copper is a trace mineral with a narrow window, and guidance for adults sits near 900 mcg daily, so a product carrying ten times that is not a bargain at any price you calculate. Cost comparison also runs into trouble across different dose sizes, because a one tablet schedule and a three tablet schedule aren't the same habit, and the option that looks cheaper is often the one you abandon first. Anyone on a multi-mineral routine should read the zinc and iron lines before adding a dedicated mineral product, since those three travel together. None of this is medical advice; a pharmacist can look at your whole routine and see conflicts that a price table will not.
Subscriptions shift the number again. They cut the per-order total and remove the reorder obligation, which matters more for a nutrient you take for years.
Do the division once and move on
Take the price, divide it by the number of doses, then check whether you and the label agree on how many doses a day you will take. A 120 tablet container at $29.90 taken as directed costs $0.25 per day, about $91 a year. Write that yearly figure next to the options you're weighing and the packaging stops mattering.
Frequently asked questions
How do I compare two bottles?Show answerHide answer
Divide price by servings, then check the servings per day the label asks for.
Is buying larger always cheaper?Show answerHide answer
Usually, but check the per-serving dose has not quietly dropped.
Does subscription change the price?Show answerHide answer
It reduces the per-order figure and removes the reorder decision.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
