This is a Vegan Vitamin D3 1000IU is extracted from lichen.
The skin cannot create vitamin D if covered in sunscreen or clothing. In fact, a sun cream with SPF15 may reduce the skin’s ability to synthesize vitamin D by more than 95%.
From April to September, most people should be able to get their daily requirements of vitamin D. They need to expose their legs and arms, or torso and arms to sunlight for a minimum of 20 minutes. Depending where you live, you may want to avoid sun radiation between 12 and 2-3pm.
Between October and late April we may not get enough vitamin D from sunlight. Therefore I will advice supplementing with the right dose for you. It may be difficult to find out which dose you should be taking, because there are so many variables involved. The best approach will be to test for vitamin D blood levels and then start taking the dose your consultant believes is best for you. After 3 months take another test to see if the vitamin D levels have fallen into the healthy reference range. If so, that’s the right dose for you.
Anyway, a Vegan Vitamin D3 of 1000iu is a good entry level.