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Caveat emptor. "Probiotics" might not be what they seem
1bhuff@nisgaahealth.bc.ca
Summary
Commercially available probiotic products often fail to meet label claims. Many products lacked viable organisms or the specific Lactobacillus species advertised, questioning their efficacy.
Area of Science:
- Microbiology
- Food Science
- Consumer Health
Background:
- Probiotic supplements are widely used for purported health benefits.
- Accurate labeling of microbial content is crucial for consumer trust and product efficacy.
Purpose of the Study:
- To evaluate the microbial content of commercially available probiotic products.
- To verify the presence and quantity of viable organisms, especially Lactobacillus species, against product labels.
Main Methods:
- A randomized, double-blind trial was conducted on 10 over-the-counter probiotic brands.
- Products were selected based on claims of containing Lactobacillus.
- Microbial analysis focused on identifying and quantifying viable organisms and Lactobacillus species.
Main Results:
- None of the 10 tested probiotic products accurately matched their labeled microbial specifications.
- Two products contained no viable organisms.
- Five products lacked Lactobacillus despite label claims, and eight contained only 10% of the advertised viable cell count.
Conclusions:
- Product labels frequently misrepresent microbial content, failing to adequately identify or quantify microbes.
- Current evidence suggests probiotics should not be recommended due to widespread labeling inaccuracies and potential lack of efficacy.