I'm only on my 2nd day of treatment~2x day/3 weeks~and am experiencing nausea and a metallic taste in my mouth. Nausea was not listed under the most common side effects and as this is only my 2nd day I'm wondering if it will continue to be a problem or lessen as my body gets used to it. Pepto has not helped. Also I've r/o other causes of nausea.