Dear service user, Thanks for contacting Healthcaremagic. I have gone through your question and understand your concerns regarding insufficient erections as compared to previous acts. You are stressed about it. Let me know whether you achieve and maintain a good quality of erection in sleep, in the early morning, during masturbation but not at the time of coitus? If you are able to achieve and maintain erection in any one of the above mentioned situations than your problem is more likely psychological rather than physical. There are several causes of insufficient erections. The common reasons are 1. Diabetes 2. Some medicines like anti depressants and anti psychotics 3. Performance anxiety (the most common reason) 4. Alcohol use 5. Smoking 6. after some surgical procedures To help you in the best way, i recommend you to see urologist or physician who will help you to find the cause of erectile problem and treat it effectively. Amphetamine (adderal) did not help you. There are several effective drugs and behavior therapies which improves erectile dysfunction remarkably. I hope this helps. Take care.