вот нашла про дозировку: http://ru.wikipedia.org/wiki/%D0%90%D1%81%D0%BA%D0%BE%D1%80%D0%B1%D0%B8%D0%BD%D0%BE%D0%B2%D0%B0%D1%8F_%D0%BA%D0%B8%D1%81%D0%BB%D0%BE%D1%82%D0%B0_(%D0%BB%D0%B5%D0%BA%D0%B0%D1%80%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE%D0%B5_%D1%81%D1%80%D0%B5%D0%B4%D1%81%D1%82%D0%B2%D0%BE)