I've been wondering about the best way to take a Vitamin D 60000 IU sachet. Should I have it on an empty stomach in the morning and if so, how long should I wait before eating? Or is it better to take it during meals or right after? Also, should I be mixing it with milk, water, or just my regular meals? And one more thing, do I need to mix the powder with a liquid, or can I just swallow the powder and then take a drink?