Tested and True: Probiotics

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Probiotics are one of Consumer Reports “11 supplements to consider”* as they have been shown to likely be safe for most people and equally likely to be effective in appropriate doses for certain conditions. Probiotic products contain helpful, viable, and safe bacteria and/or yeasts that assist in balancing the levels of indigenous microorganisms in the human body.

Claims and Purported Use

Generally speaking, the normal human gastrointestinal tract contains hundreds of different species of bacteria, referred to as intestinal flora.  The right balance of bacteria types is what promotes digestive health.  When the normal balance of these bacteria is altered by sickness or antibiotic treatment, the most common effect is diarrhea. Probiotics are possibly effective for preventing diarrhea while taking the antibiotics by restoring the balance of the intestinal flora to its optimal mix. Additionally, probiotics may also produce substances that inhibit disease-causing bacteria via nutrient competition and stimulate the body’s own immune system.


Align Digestive Care Probiotic

Align Digestive Care Probiotic Supplement, Capsules

Culturelle Probiotic Natural Health & Wellness

Culturelle - Probiotic Health & Wellness - 30 Capsules

Florastor Probiotic


Florastor - 50 count, 250mg

Garden of Life Raw Enzymes, Women, Vegetarian Capsules

Garden of Life Raw Enzymes, Women, Vegetarian Capsules

Jarrow Formulas Jarro-Dophilus EPS Vegetarian Capsules

Jarrow Formulas Jarro-dophilus EPS, 120 Capsules

Nature’s Bounty Natural Acidophilus

Nature's Bounty Natural Acidophilus Dietary Supplement, Tablets

Nutrition Now PB8, Probiotic

Nutrition Now PB 8, Probiotic Acidophilus

Selected Potential Side Effects

Gas.  People with poor immune function should check with his or her physician prior to taking a probiotic.

Selected Drug Interactions

Might cause infection in people taking immunosuppressant drugs.


Suggested Dosage

The recommended dosage for probiotic supplements varies by strain and use.  The typical amount is usually around 1 billion to 10 billion cells (of CFUs) per day.  On a label, they will appear as 1 x 109 or 109 for one billion units and 1 x 1010 or 1010 for ten billion units.

Reference Guide for Tested and True Dietary Supplements

Tested and True: Fish Oil

Tested and True: Krill Oil

Tested and True: Multivitamins

Tested and True: Vitamin D

Tested and True: Coenzyme Q10 (CoQ-10)

Tested and True: Glucosamine and Chondroitin

Tested and True: Probiotics

Tested and True: Muscle Enhancers – Creatine

Tested and True: Muscle Enhancers – Branched Chain Amino Acids (BCAAs)

Tested and True: Nutrition Bars

Tested and True: Nutrition Drinks & Powders

Tested and True: Weight Loss Accelerators and Appetite Controllers

Tested and True: Mood Booster SAM-e

Tested and True: Mood Booster St. Johns’ Wort

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*reference: Consumer Reports Health



About Dave Barnas, M.S., CES, NASM-CPT

Dave is the true health guy. He is the founder and owner of True Health Unlimited, LLC, a personal health and fitness company in Tolland, CT & Wellness Writers, a subscription wellness newsletter service that incorporates live & virtual wellness workshops for companies across New England. Dave earned both a Bachelor's (1998) and Master's Degree (2000) in Nutritional Science from the University of Connecticut, and also holds certifications as a National Strength and Conditioning Association Certified Personal Trainer, National Academy of Sports Medicine Certified Personal Trainer and Corrective Exercise Specialist, Aerobics and Fitness Association of America Group Instructor, and Nutrition Specialist. He's also the lead author for four published works. Dave has over 20 years of combined experience in nutrition counseling, dietary supplement advising, personal training, corrective exercise training, health coaching and public speaking. In addition, he's spent over 25 years studying spirituality, meditation, and personal growth strategies. Dave's clients are all ages: youth, college championship level athletes, folks in their retired years, and everywhere in between. He's worked with three of the nation's leading physicians as a dietary supplement advisor and been a guest lecturer at Harvard University, Yale University, UConn, St. Joseph College and various church groups, health clubs, and high schools. In 2013, he was invited to Whole Foods Market to share his Real Food Therapy Guide. And in 2015, Dave's funny "Snowga" (yoga in the snow) video caught the attention of The National Weather Channel, who aired it to shake off cabin fever and bring laughter. In 2016, Dave & Hollie (his wife) founded Wellness Writers and deliver evidence-based Wellness E-newsletters to spread a message of health and happiness to various businesses throughout the US. Dave currently serves as a personal trainer in Tolland as well as a wellness coach and writer for several businesses, gyms and wellness facilities throughout the US.

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