To put your mind at ease right up front--yes, I took 50,000 IU daily for 3 months. And it did exactly what it wsa susposed to do. Here's my experience.
I started with a level of 23 and my endochronologist put me on 50,000 IU three times a week. My level went to 28 after 3 mos treatement (still way too low). He upped it to 50,000 IU daily for the next 3 mos. At the end of that period, my Vit D level was 87, slightly above where it should be (toxic level is somewhere over 100, I forget exactly where--120 or 140 maybe; desirable is 40-80). So now he has placed me on 50,000 3 times a week and I am maintaining at around 75.
I might add that I live in Oklahoma where there is lots of sun in summer months and I work outside in my yard almost daily. So you see, some of us certainly have no problem tolerating the super high dosages of D.
I have a friend who went on 2000 IU daily and in 3 mos pulled her D up from 11 to 56--a totally different experience from mine. My question is: how can your doctor be certain that you are not one who will react in the way she did in which case the 50,000 might be much too high a dosage for you? You might want to mention these two histories to her.
Best of luck to you. Isn't it a shame that so little checking was done on Vitamin D in the past? Who knows how long I had the deficiency before it was detected due to a diagnosis of severe osteoporosis with T-scores of spine -3.6 and wrist -4.0.
http://www.inspire.com/groups/nation...-000-iu-daily/