Everybody should consider taking 10mcg of vitamin D from September until March, regardless of the coronavirus pandemic.
That’s because the body struggles to produce enough vitamin D during winter, due to the axis of the earth and reduced daylight hours.
You could also top up on vitamin D by spending more time in direct sunlight. The sun prompts the body to naturally produce vitamin D3.
Alternatively, you can top up on vitamin D by eating more oily fish, eggs, or mushrooms.