One reference work states: “To take enough willow bark to achieve the benefits aspirin provides or to take enough foxglove to achieve the full lifesaving effects of digitalis is much more easily accomplished via a pill than by eating natural substances. ”
Kādā grāmatā sacīts: ” Lai uzņemtu pietiekami daudz ārstniecisko vielu, ko satur, piemēram, vītolu miza vai uzpirkstītes, daudz ērtāk ir lietot tabletes, nevis pašus šos augu valsts produktus. ”