When Savannah Crosby started posting videos on TikTok about using berberine, a dietary supplement, for weight loss, she had about 500 followers.
About two months later, Crosby now has more than 21,000.
When Savannah Crosby started posting videos on TikTok about using berberine, a dietary supplement, for weight loss, she had about 500 followers.
About two months later, Crosby now has more than 21,000.