I take 50,000 IU weekly. That makes it about 7000 IU daily. I read that you have to multiply your weight in kg by 100 to get the daily required amount. However I'm 50kg and take 7000 IU which is way over the recommended dose for my weight. I've tested twice before taking the next weekly dose and one time it was 62.4 ng/mL and recently it was 42.11 ng/mL. All way under the maximum of the optimal levels which is 80 ng/mL. So it really depends on how much you weigh and you can safely go over that by couple of 1000s with no problem. You can get tested to be sure. Just make sure that you've not taken it for a week and then get tested. You could get tested to have a baseline before and after adjusting your dose. Of course I'm not a doctor and this is not a medical advice, blah blah blah, so consult your doctor.