Re: Vitamin D - not going up quickly with supplements? Normal?
Yes, vitamin D climbs very slow. At a level of 58 I am surprised your doctor gave you anything. Most doctors do not treat unless you are below 30 and then only give 1200 mg. per day of vitamin D.
There are side effects due to too high dosage of vitamin D from pills. Google and find out all you can about vitamin D deficiency, etc.