Check with your doctor about ordering a higher strength pill then cutting it in half to save money.
Most prescription medications have various strengths of active ingredient, but they sell for nearly the same price. Take a 100mg tablet and cut in half for your 50mg daily dose and save almost 50%. A pill cutter can be obtained at most pharmacies for less than $5. Of course, some pills should not be cut, so be sure to check with your doctor first.