Endurance training puts sustained demand on the cardiovascular and respiratory systems. Iron and B-vitamins drive oxygen transport and energy metabolism; CoQ10 supports mitochondrial output; electrolytes and electrolytes-adjacent minerals replace sweat losses.
Each pill links to the supplement's full interaction profile. Synergistic pairs are surfaced in the next section.
Pairs from the list above that are marked synergistic in the interaction matrix. Each one links to the full pair report — timing, dosage, mechanism, and who should be careful.