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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  • Sale

    Fortify® Women’s 30 Billion Daily Probiotic

    Capsule
    bestAutoDiscountPrice 2399
    DEBUG Monday, October 6, 2025 at 2:21 pm -0500 lastStartDate
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  • BUY 4, SAVE 30%

    Buy any 4 products at naturesway.com and get 30% off! Find your fall favorites and stock up now. Sale ends Oct. 10th at 10 a.m. CT. Terms apply.

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  • Sale

    Fortify® 50+ Extra-Strength† Probiotic

    Capsule
    bestAutoDiscountPrice 2999
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    From: $25.49
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  • BUY 4, SAVE 30%

    Buy any 4 products at naturesway.com and get 30% off! Find your fall favorites and stock up now. Sale ends Oct. 10th at 10 a.m. CT. Terms apply.

    SHOP NOW
  • Sale

    Fortify® Optima® 35 Billion Probiotic

    Capsule
    bestAutoDiscountPrice 3299
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    Fortify® Optima® Women’s Advanced Care 90 Billion Probiotic

    Capsule
    bestAutoDiscountPrice 4749
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    From: $40.37 Buy any 4, get 30% off
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    Fortify® Optima® 100 Billion Probiotic

    Capsule
    bestAutoDiscountPrice 5249
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    Fortify® 30 Billion Daily Probiotic Adults 50+

    Capsule
    bestAutoDiscountPrice 2399
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    Fortify® Adult Extra-Strength† Probiotic

    Capsule
    bestAutoDiscountPrice 2999
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    Fortify® Women's Extra-Strength† Probiotic

    Capsule
    bestAutoDiscountPrice 2999
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  • Sale

    Fortify® 30 Billion Daily Probiotic

    Capsule
    bestAutoDiscountPrice 2399
    DEBUG Monday, October 6, 2025 at 2:21 pm -0500 lastStartDate
    From: $20.39 Buy any 4, get 30% off
    From: $20.39
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  • Sale

    Fortify® Optima® Women’s 50 Billion Probiotic

    Capsule
    bestAutoDiscountPrice 4199
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    From: $35.69 Buy any 4, get 30% off
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  • Sale

    Fortify® Optima® Age 50+ Advanced Care 90 Billion Probiotic

    Capsule
    bestAutoDiscountPrice 5249
    DEBUG Monday, October 6, 2025 at 2:21 pm -0500 lastStartDate
    From: $44.62 Buy any 4, get 30% off
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  • Sale

    Fortify® Optima® Advanced Care 60 Billion Probiotic

    Capsule
    bestAutoDiscountPrice 4199
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  • Sale

    Fortify® Optima® Adult 50+ 50 Billion Probiotic

    Capsule
    bestAutoDiscountPrice 4199
    DEBUG Monday, October 6, 2025 at 2:21 pm -0500 lastStartDate
    From: $35.69 Buy any 4, get 30% off
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  • Sale

    Fortify® Optima® 50 Billion Probiotic

    Capsule
    bestAutoDiscountPrice 4199
    DEBUG Monday, October 6, 2025 at 2:21 pm -0500 lastStartDate
    From: $35.69 Buy any 4, get 30% off
    From: $35.69
    From: $35.69 $35.69
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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® 30 Billion Daily Probiotic or the Fortify® Optima® Adult 50+ 50 Billion 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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