Yes, Brewers Yeast Does Contain B3 (Niacin)
                                
                                
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                                    4 min read                                
                            
                                As a potent source of B-complex vitamins, including B3, brewer's yeast is often sought for its nutritional benefits. This single-celled fungus is not only a key ingredient in brewing but also a popular dietary supplement used to boost energy and support various bodily functions.