Natural Factors Ultimate Multi Probiotic Double Strength 24B (60 VCaps)
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Natural Factors Ultimate Multi Probiotic Double Strength is a comprehensive one-per-day, 12-strain probiotic formula with added prebiotics (FOS and inulin) for long-lasting gut flora support. It delivers a guaranteed minimum of 24 billion CFU per capsule at expiry (40 billion CFU at manufacture), combining a lacto-probiotic blend (17.76 billion CFU, 8 strains) with a bifido-probiotic blend (6.24 billion CFU, 4 strains). Gluten-free, non-GMO, and suitable for vegetarians. 60 vegetarian capsules per bottle (60-day supply). Formulated by Natural Factors, a trusted Canadian natural health brand.
Unlike the Critical Care Probiotic series, Ultimate Multi Probiotic Double Strength includes prebiotic fibres — fructooligosaccharides (FOS) and inulin — to nourish and sustain the probiotic strains for longer-lasting action. With 12 strains selected for their compatibility, natural resistance to gastric acid, and ability to thrive in high-bile environments during digestion, this formula provides broad-spectrum daily gut flora support for adults seeking a comprehensive, higher-potency probiotic with prebiotic synergy.
Key Features
- 24 billion CFU guaranteed at expiry (40 billion CFU at manufacture)
- 12 strains across lacto and bifido blends — the broadest strain diversity in the Natural Factors probiotic range
- 17.76 billion CFU lacto-probiotic blend (8 strains)
- 6.24 billion CFU bifido-probiotic blend (4 strains)
- Includes prebiotics — FOS and inulin — to nourish and sustain probiotic strains
- Gastric acid and bile-resistant strains — reach the intestines at full potency
- One capsule daily
- Take at least 2–3 hours before or after antibiotics
- Gluten-free, non-GMO, vegetarian capsule
- 60 vegetarian capsules (60-day supply)
- Formulated by Natural Factors, a Canadian natural health brand
Medicinal Ingredients (per capsule)
Proprietary Synergistic Blend — 24 billion CFU† total
Lacto-Probiotic Blend — 17.76 billion CFU†
- Lactobacillus casei (HA-108)
- Lacticaseibacillus rhamnosus (HA-111)
- Lactobacillus acidophilus (HA-122)
- Lactiplantibacillus plantarum (HA-119)
- Lacticaseibacillus rhamnosus (HA-114)
- Limosilactobacillus fermentum (HA-179)
- Ligilactobacillus salivarius (HA-118)
- Lacticaseibacillus paracasei (HA-196)
Bifido-Probiotic Blend — 6.24 billion CFU†
- Bifidobacterium breve (HA-129)
- Bifidobacterium longum subsp. longum (HA-135)
- Bifidobacterium bifidum (HA-132)
- Bifidobacterium animalis subsp. lactis (HA-194)
†CFU: colony forming units. Minimum 24 billion CFU guaranteed at expiry.
Non-Medicinal Ingredients
Vegetarian capsule (carbohydrate gum [cellulose], purified water), fructooligosaccharides (FOS), inulin, vegetable grade magnesium stearate (lubricant), silica, ascorbic acid.
Allergen Statement
May contain traces of milk and/or soy. Contains no artificial colours, preservatives, or sweeteners; no starch, sugar, wheat, gluten, corn, egg, fish, shellfish, salt, tree nuts, or GMOs. Suitable for vegetarians.
Recommended Use
Helps support intestinal and gastrointestinal health. May promote a favourable gut flora.
Directions for Use
Adults: Take 1 capsule daily, or as directed by a healthcare practitioner. Take at least 2–3 hours before or after antibiotics.
Cautions
May contain traces of milk and/or soy. Stop use and consult a healthcare practitioner if symptoms of digestive upset (e.g., diarrhea) occur, worsen, and/or persist beyond 3 days. Consult a healthcare practitioner before use if you have fever, vomiting, bloody diarrhea, or severe abdominal pain. Do not use if you have an immune-compromised condition (e.g., AIDS, lymphoma, or are undergoing long-term corticosteroid treatment). Keep out of reach of children. Store in a cool, dry place.
Size: 60 VCaps (60-day supply) | Potency: 24 billion CFU guaranteed at expiry | Brand: Natural Factors | Made in Canada

Have been using 25 million dosage. Seems to be working fine