I took my first ergocal last night that dr prescribed due to low vitamin d and i woke up with dark swollen circles under my eyes, is this normal?

Stress related : You may be worrying too much and not sleeping well ergocal won't cause dark circles under your eyes but stress, anxiety depression and even hormonal changes can try to relax and prepare for a good nights sleep, make sure your room is completely dark, no night lights or curtain cracks often helps, talk with your Doc about these other issues to see what help can be provided and please don't worry!