Is there a way to remove vitamin d-3 from the body? er doc diagnosed my mom with an d-3 overdose; it's given her a solid migraine for 30+ days now.

Rather difficult: Need a bit more information, as the vitamin d overdose label may be very erroneous if level is below 80-90 ng/ml. Would also note that migraine headaches in a 70 Y.O. Maybe possible but not necessarily the correct explanation, even if the vitamin level is sky-high. Vit d is fat soluble, and may be very difficult to actively decrease. Suggest two specialists, kidney expert for the d, and neuro.

Rather odd: Such an overdose would seem highly unlikely.