An old pharmacist advised me to take zenmag instead of xanax (alprazolam) for anxiety and stress. is it better?i have magnesium deficiency.

ZenMag: magnesium MG: supplement for MG deficiency. Should be monitored by physician as too much MG can affect heart/kidney problems. Side effects and overdose rare but may include blurred/double vision, coma, dizziness/fainting, drowsiness, increased/decreased urination, slow heartbeat, troubled breathing. Xanax (alprazolam) helps severe anxiety but habit-forming. Stress reduction strategies best for anxiety/stress. Best regards.