I Have Been Taking Valtrex 1 Gram Daily For Suppression

I have been taking valtrex 1 gram daily for suppression for herpes for about 14 yrs as I had been on acyclovir in the beginning and had 3 outbreaks in a row. This is the reason I've been taking this. The doctor said I would have to take this for the rest of my life. I don't have prescription coverage so I've gotten the script through the patient assistance program. Now Glaxo Smith Klein is discontinuing this after March 31,2016. Is there any place to get this as I am on social security and can't afford it. Thank-you