“Therapy with antidepressants from different groups and with different … mg x 3/day per os, 4 weeks) and sertraline (50 mg x 3/day … a significant increase of magnesium concentration in erythrocytes (57.6 +/- 4.5 mg/L after amytriptiline, …/L after sertraline, p < 0.05 vs. before therapy).”