Any type of muscle injury can cause intense pain. It does not matter whether you are suffering from constant muscle spasms, a painful muscle strain or a muscle sprain. You are probably looking for an effective and yet affordable method to alleviate your pain. One of the best options is to take a muscle relaxant called Flexeril. If you are concerned that the medication will cost you too much, there is an alternative currently available. Discount Flexeril is sold from many online pharmacies. You can order the drug from the Internet without a prescription and pay less than from your local pharmacy.