How to compare acidophilus prices

The only acidophilus price comparison that means anything is price per serving at a stated, guaranteed CFU count — not price per bottle, and not price per capsule count alone. A bigger bottle or a higher listed CFU number isn't automatically the better value if the price per serving works out higher once you do the arithmetic.

Price per serving, not price per bottle

Divide a product's total price by its number of servings — usually the capsule or sachet count — to get a figure you can actually compare across brands. A 60-capsule bottle taken once daily has 60 servings; the same bottle taken twice daily has 30. That serving size, printed on the Supplement Facts panel, is what the price-per-bottle number has to be divided by, not the capsule count alone.

Price per billion CFU as a second check

Because acidophilus is dosed in colony-forming units, not milligrams, a second useful figure is price per serving divided by the CFU count in billions. As an illustration only: a product priced at $20 for 30 servings works out to about $0.67 per serving; if that serving contains 10 billion CFU, that's roughly 6.7 cents per billion CFU. A second product at $30 for 30 servings of 50 billion CFU works out to $1.00 per serving but only 2 cents per billion CFU — the higher-priced bottle is the better per-organism value, even though its per-serving price looks worse at first glance. Whether a higher CFU count is worth paying for depends on whether it matches a dose that's actually been studied for the strain in question — see acidophilus dosage for what trials have used.

What the guaranteed-CFU wording is worth

Live bacteria lose potency in storage, so a label that guarantees its CFU count through the end of shelf life — rather than only at the moment of manufacture — is promising something a cheaper, manufacture-date-only label isn't. That's a real difference worth paying for, but it isn't visible in a price-per-serving number alone; it only shows up by reading the fine print on each label being compared. More on reading a label in how to choose a good acidophilus supplement.

Acidophilus milk isn't a fair comparison

Acidophilus milk and similar cultured dairy products are foods, not supplements, and a food label isn't required to state a CFU count the way a supplement label is. That means there's no reliable way to work out a cost-per-CFU figure for a carton of acidophilus milk the way you can for a labeled capsule or powder — its price reflects the milk and packaging, not a measured dose of the bacteria.

Questions people ask

How much does acidophilus cost?

It varies by format, strain, and CFU count — capsules, powders and refrigerated liquids are priced differently, partly for reasons unrelated to the bacteria itself (packaging, cold-chain shipping). Price per serving, and price per billion CFU, are the two figures that let you compare fairly across products.

Is more expensive acidophilus better?

Not necessarily. A higher price can reflect a higher guaranteed CFU count, a named strain backed by a specific trial, cold-chain shipping, or simply brand markup — the price alone doesn't tell you which. Check the label details in how to choose a good acidophilus supplement before assuming price reflects quality.

What's the price of acidophilus milk?

It's priced like other cultured dairy products in the grocery dairy case, not against a supplement's per-serving or per-CFU figures — see above for why that's not a comparable number.

Related reading: how to choose a good acidophilus supplement and acidophilus powder vs. liquid.