Thanks to her, I restored a normal sex life.In patients with cirrhosis of the liver Class A and B on the Childa-Pugh scale, the clearance of sildenafil decreases, resulting in an increase in AUC 84 and C max 47 compared to those in normal liver function in patients of the same age group.over the counter Medicines and drugs that can be sold without a doctor s prescription are sold over the counter The small dictionary of idiomes.The effects of taking 100 mg of Viagra can last for up to 4 hours after taking the drug.Avoiding alcohol will also help reduce these side effects.