I have been a regular customer of yours for the 100 mg generic sildenafil a few times over now. My last script was filled a week ago #962188. I usually break them in 1/2. I've taken 400 mg in 4 days with no effect whatsoever. The " AC 340" is a bad compound.ive never had a problem until now with your product. I'm very disappointed and surprised. I would like a call and some consideration or I will not be ordering again. Please advise me how to proceed. The pills that were sent this time are useless. My number is 516-353-6628. You have my email. I'll be waiting for a response. I sent an e-mail days ago but it apparently didn't go through. Thank you for your consideration.