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Description
Kefir fermentation is a complex interplay of various microbial strains, substrate compounds, grain-to-substrate ratios, and environmental conditions, all of which can substantially affect the final properties of kefir beverages [175,176]

So the real question splits into two

ORGANIC GLUTATHIONE COLLAGEN GUMMIES HAIR, SKIN, NAILS & JOINTS DIETARY SUPPLEMENT The FDA verified through its online monitoring or post-marketing surveillance that the above-mentioned food product is not registered and no corresponding Certificate of Product Registration (CPR) has been issued

& Freedman, J