57d50aa9_Health_Information_Library__Why
[Used for] 1 Star Amenorrhea Refer to label instructions [Why] 
Preliminary evidence found that vitamin B6 restored menstruation and normalized hormone levels in three women with amenorrhea who had high prolactin levels. Prolactin is a hormone that may be elevated in some cases of amenorrhea. A preliminary trial of 200 to 600 mg daily of vitamin B6 restored menstruation and normalized prolactin levels in three amenorrheic women with high initial prolactin levels; however, 600 mg daily of vitamin B6 had no effect on amenorrheic women who did not have high prolactin levels.137 A number of other small, preliminary trials have not demonstrated an effect of either oral or injected vitamin B6 on prolactin levels,138 , 139 , 140 , 141 , 142 and they also have reported inconsistent effects on restoring menstruation.143 , 144 , 145 Larger, controlled trials are needed to better determine the usefulness of vitamin B6 in amenorrhea.
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