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Natural Factors | Critical Care Probiotic 55 Billion

Natural Factors

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Ultimate Probiotic Critical Care is a proprietary blend of 9 gastric-resistant strains with a powerful concentration of active cells that work synergistically for maximum activity and efficacy.
Gluten free

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Natural Factors Critical Care Probiotic 55 Billion Active Cells is a 9-strain formula that includes five strains of Bifidobacteria and four strains of Lactobacilli. This potent formulation includes L. paracasei, L. rhamnosus, L. acidophilus, L. plantarum, and B. bifidum, proven to help eliminate or reduce the growth of methicillin-resistant Staphylococcus aureus (MRSA), and to lower incidence of Clostridium difficile-associated diarrhea.

This multistrain formula can quickly restore the diversity of microflora after antibiotic use, with L. acidophilus particularly helpful in counteracting antibiotic-associated diarrhea, abdominal cramps, and constipation*.

Each strain in this formulation has been carefully selected for its natural resistance to gastric acid, allowing the probiotics to reach the intestines at full potency*. Critical Care Probiotic 55 Billion Active Cells has a guaranteed potency of 95 billion active cells per capsule at manufacture and at least 55 billion at expiry.


These statements have not been evaluated by Health Canada or the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.

Suggested Use

1 capsule 1–2 times per day, with or without meals, or as directed by a health professional. If you are taking antibiotics, wait 2 hours before ingesting probiotics.

For maximum strength, refrigerate.


As with any supplement, consult your health professional before use if you are pregnant, breastfeeding, or trying to conceive, or if you are taking medication, have a medical condition, or anticipate a surgery. Keep out of reach of children.

Sealed for your protection. Do not use if seal is broken. For freshness, store in a cool, dry place.


Each Capsule Contains:

55 billion* active cells of the following specially cultured probiotic strains:

Bifidobacterium breve (HA-129) (whole cell) 20%  : 11 billion cfu†

Bifidobacterium longum subsp. longum (HA-135) (whole cell)20% : 11 billion cfu†

Lactobacillus paracasei (HA-196) (whole cell)15% : 8.25 billion cfu†

Lactobacillus plantarum (HA-119) (whole cell)15% : 8.25 billion cfu†

Lactobacillus acidophilus (HA-122) (whole cell)10% : 5.5 billion cfu†

Lactobacillus rhamnosus (HA-111) (whole cell)10% : 5.5 billion cfu†

Bifidobacterium animalis subsp. lactis (HA-194) (whole cell)5% : 2.75 billion cfu†

Bifidobacterium bifidum (HA-132) (whole cell)4.5% : 2.475 billion cfu†

Bifidobacterium longum subsp. infantis (HA-116) (whole cell)0.5% : 0.275 billion cfu†

†cfu: colony forming units

 Non-medicinal Ingredients:

Vegetarian capsule (carbohydrate gum [cellulose], purified water), potato starch, vegetable grade magnesium stearate (lubricant), ascorbic acid, skim milk, trypticase-soy broth, sucrose, yeast extract


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