You might try the Turkey Rhubarb Colon formula. Though it does not cause the colon muscles to relax, it may help to soften the stools, and allow for easier passage. Over time it can help to rebuild any muscle damage by encouraging the peristaltic muscle to do its job! The additional benefit is that you won't need to strain to eliminate, that in it's self may help to reduce any tearing.
A good source of natural "green" calcium will help to improve the mucous membrane in the colon as well.
