It is thought that a drug reacts differently with media taken internally. The solubility of Aspirin is assured 600μg/ml in 30min. with Misasa spring water, whereas 400μg/ml with plain water. The parallel difference of 200μg/ml follows 10 min. thereafter. Maximum serum concentratin of 200μg/ml is obtained 2 hours after the internal use of Aspirin with Misasa spring water in parallel difference of 20μg/ml with plain water. In the case of Indomethacin intake, maximum serum concentration of 1.5μg/ml is obtained in 2 hours with plain water, whereas maximum serum concentration of 1μg/ml is obtained in the same period with Misasa spring water. However, the difference of 0.25μg/ml in serum concentration between the media internally taken is seen initially and after 4 hours under high concentration of Indomethacin. We, therefore, assume tentatively that the effect of Aspirin and Indomethacin is supposed to be enhanced with Misasa spring water taken internally.