Guan W, Ni Z, Hu Y, Liang W, Ou C, He J, Liu L, Shan H, Lei C, Hui DSC, Du B, Li L, Zeng G, Yuen K-Y, Chen R, Tang C, Wang T, Chen P, Xiang J, Li S, Wang J, Liang Z, Peng Y, Wei L, Liu Y, Hu Y, Peng P, Wang J, Liu J, Chen Z, Li G, Zheng Z, Qiu S, Luo J, Ye C, Zhu S, Zhong N (2020) Clinical characteristics of coronavirus disease 2019 in China
At the budget end (under about 30 USD), you can find genuinely good 1% serums from mass-market brands that prioritize formulation over frills
It's not positioned as a cure, but rather as a supportive element in a broader gut health strategy that includes whole foods, hydration, and mindfulness around inflammation triggers
This makes it an effective option for those seeking to maintain overall wellness