I am gald that you were able to self-treat your shoulder pain by doing LFs. There can be multiple ways to approach a problem and come to a solution.
Performing a Liver-Flush may be one of them. But I do not see it as a simple remedy. Drinking OIL and several cups of ES, and inducing lots of diarrhea may help, but its NOT A LONG TERM SOLUTION. A long term solution is something which is lot more gentle to our system. I am guessing the magnesium from ES helped you with your shoulder pain.
Have you tried other therapies for your pain? Like Massage, Trigger Point therapy, Chiropractic, Inversion therapy, Yoga therapy, Physiotherapy etc. All these have potential of curing shoulder pain, without the diarrhea effect of classic LF.
Other things to consider are, the quality of water we are consuming. 70% of our bodies is water, and drinking the appropriate water with adequate minerals can fix a host of health problems. The solution might be in the very water we drink. De-mineralized water is harmful and unhealthy. If water is not able to reach our cells, tissues, muscles, we shall have pain and ill-health.
So a couple of LFs may have cured Shoulder pain and taken you off tha toxic drug. Maybe its time now to wean yourself off the Liver-Flush as well. Think about it.!