<p>The most frequent side effects, reported by Nitazoxanide are abdominal pain, vomiting and headache. These side effects are typically mild and transient in nature. Very rare side effects include- nausea, anorexia, flatulence, increased appetite, enlarged salivary glands, increased creatinine &amp; SGPT level, pruritus, rhinitis, sweating, dizziness, discolored urine etc.</p>