Fortify® Probiotics

Fortify yourself from the inside out with quality probiotics made with researched strains to support digestive and immune health.*

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14 products

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  • Fortify Daily Probiotic
    Capsule
    Women's
    Vaginal Health
    bestAutoDiscountPrice 2399
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $20.39
    From: $20.39 $20.39
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  • Fortify® Extra-Strength† Probiotic
    Capsule
    Adults 50+
    Promotes Colon Health
    bestAutoDiscountPrice 2999
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $25.49
    From: $25.49 $25.49
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  • Fortify® Optima® Probiotic
    Capsule
    Adults
    Digestive Support
    bestAutoDiscountPrice 3299
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $28.04
    From: $28.04 $28.04
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  • Fortify Optima® Ultra Potency Probiotic
    Capsule
    Women's
    Vaginal Health
    bestAutoDiscountPrice 4749
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $40.37
    From: $40.37 $40.37
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  • Fortify® Optima® Probiotic
    Capsule
    Adults
    Promotes Gut Comfort
    bestAutoDiscountPrice 5249
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $44.62
    From: $44.62 $44.62
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  • Fortify Daily Probiotic
    Capsule
    Adults 50+
    Promotes Colon Health
    bestAutoDiscountPrice 2399
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $20.39
    From: $20.39 $20.39
    Options
  • Fortify Probiotic
    Capsule
    Adults
    Promotes Gut Comfort
    bestAutoDiscountPrice 2999
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $25.49
    From: $25.49 $25.49
    Options
  • Fortify Extra Strength Probiotic
    Capsule
    Women's
    Vaginal Health
    bestAutoDiscountPrice 2999
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $25.49
    From: $25.49 $25.49
    Options
  • Fortify Daily Probiotic
    Capsule
    Adults
    Promotes Gut Comfort
    bestAutoDiscountPrice 2399
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $20.39
    From: $20.39 $20.39
    Options
  • Fortify® Optima®
    Capsule
    Adults
    Promotes Gut Comfort
    bestAutoDiscountPrice 4199
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $35.69
    From: $35.69 $35.69
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  • Fortify Optima Probiotic
    Capsule
    Women's
    Digestive Support
    bestAutoDiscountPrice 4199
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $35.69
    From: $35.69 $35.69
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  • Fortify® Optima® Advanced Care Probiotic
    Capsule
    Adults 50+
    Promotes Colon Health
    bestAutoDiscountPrice 5249
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $44.62
    From: $44.62 $44.62
    Options
  • Fortify® Optima® Probiotic
    Capsule
    Adults
    Digestive Support
    bestAutoDiscountPrice 4199
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $35.69
    From: $35.69 $35.69
    Options
  • Fortify® Optima® Probiotic
    Capsule
    Adults 50+
    Digestive Support
    bestAutoDiscountPrice 4199
    DEBUG Saturday, March 14, 2026 at 6:37 am -0500 lastStartDate
    From: $35.69
    From: $35.69 $35.69
    Options

Frequently Asked Questions

You can purchase Nature’s Way Fortify® probiotics at major supermarkets, health food stores, large retailers, and online retailers like Amazon. You'll also find them and over 300 other supplements on our website. Wherever you purchase Fortify probiotics, you can trust that you'll get the same top quality you expect from Nature's Way.
Nature’s Way Fortify probiotics are guaranteed to be potent through their expiration date. After expiration date they lose potency. Each bottle is marked with the expiration date, so you’ll always know when you have living cultures.
Nature’s Way Fortify probiotics are formulated to support digestive and immune health, with a single daily dose.* Every probiotic capsule is delayed release to allow delivery of living cultures to the intestine where they are needed. Always refer to the label for product usage recommendations, and consult a healthcare practitioner to determine if a product is right for you.
We offer Nature’s Way Fortify probiotics in several formulations with varying numbers of live cultures per capsule. Some, like the Fortify® Optima® 35 Billion Probiotic or the Fortify® Adult Extra-Strength† Probiotic, are formulated for both adult men and women. However, we also offer several Fortify women’s probiotics, like Fortify® Women’s 30 Billion Daily Probiotic. Fortify probiotic capsules for women provide digestive support as well as support for vaginal health.*

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