I wish that people would be more specific about what they are taking. Vitamin D comes in D2 prescribed by doctors that is no good, and D3 sold by many companies. We want the D3 geltabs made with olive oil. Vitamin D3 comes in dosages called IU (International Units) - I take 10,000 IU daily.
Are you having problems with only 200 IU? That is nothing. You are likely very deficient in magnesium.
So make sure you get D3 geltabs made from olive oil, and if you have problems taking it, you may need the co-supplements.