放大 示意图片 作者： Michal Jarmoluk 来源： StockSnap · CC0 Vitamins and Supplements Vitamin B12 1000mcg Tablets B12 for vegan diets and people on long-term metformin. $5.49 有货 数量 加入购物车 关于本产品 A reliable B12 source is essential on a vegan diet, and deficiency is more common in people taking metformin or long-term acid suppression.
