My doctor has me on 1,000 mcg per day and my last blood tests had me still at the low range of normal. I have been on it and basic iron now for several months. Seems to help some with my energy and restless legs.
@A MyMSTeam Member my doctor has me on 1000 units and my blood work stays in the average zone. I might ask him if I can take more.
I just take 1000 units. My old neuro only put me on 2000 units of D, but my PCP found I was B12 defecient. my neuro now has me still taking the B12 and upped D to 5000 units.