I advise against taking medicine when you don't need it, but some of you need it and don't take it as prescribed because it is expensive.
There is help available for the many millions of people who have no insurance and can't afford to purchase their medicines. NeedyMeds is the place to learn about patient assistance programs and other programs designed to help those who can't afford their medicines. NeedyMeds is not a program. It's an information source
Visit needymeds.com if you need assistance paying for your necessary pills.
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.