[stjohnswarts]

1000 is actually way below what you need probably, my doc put me on 2500 a day and it wasn't enough, I've moved to 5000 and been "normal" level ever since for several years for my annual checkout/blood/urine tests. If you have brown/black skin it can be even more, but better to start low and figure out what is enough under observation of a doctor.

[alleskleber]

Yes, probably. I didn't feel comfortable with a higher dose without doctor supervision.

> If you have brown/black skin it can be even more

My skin happens to be very light so sunburn is more of a concern. The evening hours are pretty safe though.