MegaFood Vitamin D3 1000 IU (25 mcg), Bone & Immune Health, 90 Tablets

Customers find this vitamin D supplement effective and appreciate that it's made with whole food ingredients, with one customer noting it helps fend off Coronavirus. Moreover, the product maintains normal vitamin D levels and has no side effects. However, the pill size receives mixed reactions, with several customers finding it extremely large and difficult to swallow. Additionally, opinions about whether the product is vegetarian are divided.