Hello, The long term back seed implant placement does not cause any form of gastritis as well as constipation. When gastro consultation is not working, means the cause may be physiologic or non-pathological probably as GI motility-related issue functional bowel dysfunction or else. Primary relief with plenty of liquids, high fiber diet, ispaghula husk and avoidance of acidity via diet intake precautions and meditations. Later on, plan to visit by appointment with all the relevant past consulting as well as medication details so that better work up can be carried out precisely to solve the issue. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel, General Surgeon