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(A) Serum magnesium levels following ingestion of one tablet of Supplement A vs. one tablet of Supplement O, * p ≤ 0.005 (B) serum magnesium levels following ingestion of two tablets of Supplement A vs. one tablet of Supplement O. Concentrations were measured 60’ before and immediately before (0’) ingesting the supplement and 30’, 60’, 90’, 120’, 150’, 180’, 4 and 6 h after ingestion, * p ≤ 0.005.
