Calculating Probiotic CFU from Dosage and Concentration

Asked by: tomtelecom744 On: November 07, 2022 Product Type: Food Answered

Question

How to calculate the CFU count for probiotic ingredients based on their concentration per gram and the dosage in milligrams? Specifically, is 60mg of 6-Strains Probiotic (10 billion CFU/g) equal to 6 billion CFU, and is 90mg of Bacillus Coagulans (100 billion CFU/g) equal to 10 billion CFU?

Answer

Probiotic CFU Calculation

Let's calculate the amount of bacteria (CFU) based on the concentration per gram and the dosage in milligrams.

  1. 6-Strains Probiotic (10 billion CFU/g)

    • Concentration: 10 billion CFU per gram (10,000,000,000 CFU/g)
    • Dosage: 60 mg = 0.06 g
    • Calculation: 10,000,000,000 CFU/g * 0.06 g = 600,000,000 CFU
    • This is equal to 0.6 billion CFU, not 6 billion CFU.
  2. Bacillus Coagulans (100 billion/g)

    • Concentration: 100 billion CFU per gram (100,000,000,000 CFU/g)
    • Dosage: 90 mg = 0.09 g
    • Calculation: 100,000,000,000 CFU/g * 0.09 g = 9,000,000,000 CFU
    • This is equal to 9 billion CFU, not 10 billion CFU.

So, to summarize:

  • 60 mg of 6-Strains Probiotic (10 billion CFU/g) contains 0.6 billion CFU.
  • 90 mg of Bacillus Coagulans (100 billion/g) contains 9 billion CFU.
Answer Update
Updated Review: May 2026

This section was added after reviewing the original answer against current product availability and formulation knowledge at the stated point in time.

Update 2026-05-24: The original CFU calculations remain correct: 60 mg of 6-Strains Probiotic at 10 billion CFU/g gives about 0.6 billion CFU, and 90 mg of Bacillus Coagulans at 100 billion CFU/g gives about 9 billion CFU. For an exact label or production claim, calculate from the current lot COA if its CFU/g differs from the catalog name. Also note that these are theoretical input CFU values at weighing; the viable CFU in the finished product can be lower depending on storage and processing. 6-Strains Probiotic should be kept frozen or at the lowest practical temperature, protected from air/light, and not used in heat-process products. Bacillus Coagulans is more heat- and acid-tolerant, but should still be handled according to the lot COA and protected from air/light.