Purchase Nizoral, | Lightstalkers Home Member Directory Calendar Groups Resources Publications If you are also taking an anticholinergic (eg, hyoscyamine), an H2 antagonist (eg, famotidine), or a proton pump inhibitor (eg, omeprazole), take Nizoral at least 2 hours before the H2 antagonist, proton pump inhibitor, or anticholinergic. Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloating; dark urine; decreased sexual ability; depression; irregular heartbeat; fever, chills, or persistent sore throat; loss of appetite; numbness or tingling of the hands or feet; pale stools; severe or persistent nausea or stomach pain; swollen or tender abdomen; thoughts of suicide; unusual bruising or bleeding; unusual tiredness or fatigue; vision changes; vomiting; yellowing of the skin or eyes.