Good Morning Doctor, My Mom Is Feeling Reeling Senstion.her Age

Good morning doctor,
My mom is feeling reeling senstion.her age is 44.she has only gastric trouble .No complaints regarding sugar and Bp.She has taken raagi malt this morning Earlier we used to drink we have given a break for it.but now we started using it.whenever she is taking it she is feeling lightheadedness.can u suggest us whom to consult i mean which specialist?thanking u in advance