BigFun tablet is used by men to treat sexual problems. The drug is used to treat impotence and erectile dysfunction in men. Take this medicine 30 minutes before intercourse. This medicine contains an ingredient called sildenafil which helps men to know strong erection during intercourse. You can take this medicine before or after a meal. Take this medicine with water but do not break or chew the medicine. Take this medicine as advised by your doctor. This drug should be taken only by men above 18 years of age.