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  • Probiotics for adults and for ages 50+: PB8 or Fortify

    November 10, 2026 4 min read

    A probiotic is a supplement with live bacteria, the kind that are part of the gut flora. In our store we carry two whose label names an age: PB8, for adults, and Nature's Way Fortify Age 50+, for ages 50 and up. Here is what each one contains, how much is taken, how it is stored and the warnings it prints. If you want to learn how to read CFUs and strains, see our probiotics guide.

    PB8 Probiotic: for adults

    It is a bottle of «120 VEGETARIAN Capsules». The front says «8 STRAINS of Beneficial Bacteria», «14 BILLION Active Cultures††» and «SUPPORTS DIGESTIVE HEALTH*».

    • Who it is for and how much: «Suggested use: As a dietary supplement for adults, take two (2) capsules per day.»
    • The serving: «Serving Size 2 Capsules» and «Servings Per Container 60». At two a day, the bottle lasts 60 days.
    • What it contains: «Proprietary Probiotic Blend - 14 billion CFU††», 755 mg per serving, with 8 strains: Lactobacillus acidophilus La-14®, Bifidobacterium lactis Bl-04®, Lactiplantibacillus plantarum Lp-115®, Ligilactobacillus salivarius Ls-33®, Bifidobacterium bifidum Bb-06™, Bifidobacterium longum Bl-05™, Lacticaseibacillus rhamnosus Lr-32®, Lacticaseibacillus casei Lc-11®.
    • What the double dagger means: «††14 billion good bacteria per serving at time of manufacture. Bacteria count will vary after time of manufacture.»
    • How it is stored: «Store in cool, dry place; best if refrigerated after opening.»
    • Other ingredients: «Other Ingredients: Vegetarian Capsule (cellulose, water).»
    • Free of: «This product contains no gluten, eggs, milk, peanuts, tree nuts, or soy.» On the front: «NO MILK, GLUTEN, or SOY».
    • Who makes it: «MANUFACTURED FOR: CHURCH & DWIGHT CO., INC.», of Ewing, New Jersey.

    Find it here: PB8 Probiotic.

    Fortify Age 50+: for ages 50 and up

    It is a Nature's Way box with «30 DELAYED-RELEASE CAPSULES». The front says «AGE 50+ PROBIOTIC +PREBIOTICS», «30 BILLION LIVE PROBIOTIC CULTURES PER CAPSULE» and «10 PROBIOTIC STRAINS». The back says «Specially formulated for Adults Age 50+».

    • Who it is for and how much: «Recommendation: Adults take 1 capsule daily. May be taken at any time, with or without food.»
    • The serving: «Serving Size 1 Capsule». The box has 30: one a day lasts 30 days.
    • What it contains: «Fortify® Age 50+ 30 Billion CFU Proprietary Probiotic Blend», 500 mg per capsule, in two groups:
      • «Bifidobacteria Blend (17 Billion CFU)»: Bifidobacterium bifidum/lactis Bb-02™, HOWARU® Bifidobacterium lactis HN019™, Bifidobacterium lactis BL-04®, Bifidobacterium lactis Bi-07®, Bifidobacterium bifidum Bb-06™, Bifidobacterium longum BL-05™.
      • «Lactobacilli Blend (13 Billion CFU)»: Lactobacillus paracasei Lpc-37®, Lactobacillus rhamnosus GG, HOWARU® Lactobacillus acidophilus NCFM®, Lactobacillus plantarum Lp-115®.
    • The prebiotic: «Chicory Root Fiber», 50 mg per capsule. The box explains what it is: «prebiotics, a food source for good bacteria.*» «**Daily Value (DV) not established.»
    • Where each group works: «Lactobacilli cultures to work in your small intestine*» and «Bifidobacteria cultures to support your colon*».
    • The capsule: «Each capsule is resistant to the harmful effects of stomach acid and distributes live cultures to the proper area of the small intestine and colon».
    • How long the 30 billion last: «30 Billion live probiotic cultures until the date of expiration without refrigeration».
    • Other ingredients: «Other ingredients: cellulose, plant-derived capsule (hypromellose, gellan gum), magnesium stearate, silica».
    • Free of: «GLUTEN FREE. No artificial colors.»
    • Who makes it: «Distributed by Nature's Way Brands, LLC Green Bay, WI 54311 USA».

    Find it here: Nature's Way Fortify Age 50+ Probiotic.

    The two, side by side

    PB8Fortify Age 50+
    Who it is forAdultsAdults age 50 and up
    Serving2 capsules a day1 capsule a day
    Bacteria per serving14 billion CFU, at time of manufacture30 billion CFU, until the expiration date
    Strains810, plus chicory root fiber
    How it is storedCool, dry place; best refrigerated after openingNo refrigeration required; room temperature or refrigerated
    How long it lasts120 capsules: 60 days30 capsules: 30 days

    Label warnings

    PB8, in the order printed:

    • «If you have a medical condition, are on medication or are pregnant or nursing, please seek the advice of a qualified health care professional before using. Take only as directed. Do not exceed suggested dosage. Do not use if inner seal is broken or missing.»
    • «KEEP OUT OF THE REACH OF CHILDREN»

    Fortify Age 50+, in the order printed:

    • «If you are pregnant, nursing, or taking any medications, consult a healthcare professional before use.»
    • «Keep out of reach of children. Safety sealed with inner seal. Do not use if seal is broken or missing. Keep tightly closed. Can be stored at room temperature or refrigerated. Avoid excessive heat and direct sunlight.»

    Questions

    • Which one is for me? PB8 says «for adults». Fortify says «Specially formulated for Adults Age 50+».
    • How many capsules a day? PB8, two. Fortify, one.
    • Do they need refrigeration? PB8 says «best if refrigerated after opening». Fortify says «No Refrigeration Required».
    • Is it taken with food? Fortify, «with or without food».
    • Do they contain gluten? PB8 says «no gluten». Fortify says «GLUTEN FREE».
    • What if I am pregnant or nursing? Both ask you to consult a healthcare professional first.

    Where to find them

    For more details, call us at 787-304-0458.

    These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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