As per your advice I took penegra express 50 mg one tablet before one hour to sex.Erection was perfect.But after the sex I felt something is happening in my body.I can visualise it in the feet,joints etc.Erection was there for long time and in the meantime I did not get the sleep.I got up late in the morning to compensate for the sleep delayed.Next day morning I was having uneasiness and slowly the pain started lightly on the left side of chest.It continued for the full day and disappeared by evening.Again I tried with another tablet after 10 days and this time the experience was the same.I was having pain in the left chest.After 15 days I tried with HALF of 50 mg tablet and the experience was same.But this time I got the sleep early and I did not know of something happening in the body for I went to sleep early.I was having the light chest pain on the left side.I took the other HALF of tablet after 10 days again and this time also I had too much of something happening in the body.I did not get the sleep for long and erection was perfect and was for long hours,not more than 4 hours.I was having the pain in the left chest and I experienced it during night as well as next day till evening.Thinking that half tablet of which dosage is more I took QUARTER of the tablet next after 10 days and even this time erection was normal.But I did not had the sleep for sometime and 1 2.00 p.m. onwards I started experiencing some sort of light pain on the left side of shoulder.It was there on the next day also and there was very light pain on the left side of chest.The pain was not severe as earlier one.I was having uneasiness also.At about 11.00 a.m. I went to a cardiologist and told him about pain.He did ECG and checked BP. Both were normal.I did not tell the doctor that I am consuming Penegea Express.So far I have not told about the side effects to my wife.Now on telling she said to discontinue taking tablets.Now advice me to go for ayurvedic form of medicines. VASANTH