Hello @sherry59, Welcome to Connect. You ask some very good questions. I take a fiber supplement like Benefiber and do think it helps with my constipation issues along with drinking a lot of water. There is an another discussion you might want to read through and learn what others with similar diagnosis have shared.

Redundant / Tortuous Colon: https://connect.mayoclinic.org/discussion/redundant-tortured-colon/

Also, you might find the following information helpful:
-- Evidence-Based Approach to Fiber Supplements and Clinically Meaningful Health Benefits, Part 2: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4415970/
-- Redundant Colon and Constipation Diet: https://www.livestrong.com/article/495984-redundant-colon-constipation-diet/
-- Acid Reflux and Constipation - Healthline: https://www.healthline.com/health/gerd/constipation

Have you discussed your concern with long term side effects of using Orvilax with your doctor or pharmacist?