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Probiotics

Live beneficial microbes that support digestion, regularity, and immune balance. Effects depend on the specific strain.

Commonly used for

  • Recovery after antibiotics
  • Diarrhea and irregular bowels
  • IBS symptoms (specific strains)
  • Vaginal and urinary health (specific strains)

Found naturally in

  • Yogurt and kefir with live cultures
  • Sauerkraut
  • Kimchi
  • Miso

Label red flags

  • Lists only genus and species, with no strain ID (the letters and numbers after the name)
  • CFU guaranteed only 'at manufacture'
  • Unclear storage instructions (refrigerated vs. shelf-stable)

Check with a provider

  • A weakened immune system, central line, or serious illness
  • Suspected SIBO, since some probiotics can worsen bloating
  • Taking antifungal medication (relevant for S. boulardii)

Supplements that contain it

Dr. Lesher, ND

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Dr. Lesher is a naturopathic doctor who specializes in women's autoimmune and chronic conditions. Since 2020, she has helped more than 900 patients overcome and heal from their conditions.

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