Hi can anyone help me my parner suffers with trapped nerve in his back and spondylitis in his neck he has been on transfec transdermal patches for about 3/4 years which were helping him a lot with pain but reasently been having a allergic reaction on his skin where patch was so he went to doctors and they gave him gabapentin actavis capsules and told him to take 100 mg three times a day which his started since yesterday, they have made him very ill he is aching all over and feels drained and feeling sick ,he wants to stop taking and go back to his transtec patch the last one he took was about 6 o'clock this morning so since yesterday his had 400 mg , can anyone tell me how long it takes to get out of his system as he is in a lot of pain and wants to put transtec patch on as soon as thank you .