Different supplements measure CFUs in the millions and billions. It can seem overwhelming to try and gauge exactly how many units you need each day when dealing with numbers in the millions and billions. Ideally, each supplement shown above provides a daily value of one billion CFUs per dosage. Many of the supplements that are currently on the market have between 1 to 10 billions CFUs, therefore any supplement that you purchase that is currently on the market will have enough CFUs per dosage.