Is 'orofer xt' taken daily expected to cause severe gas & stomach pain for 57+ f ? does once a week dosage also sometimes can cause the same ?

Common side effect: GI symptoms are common side effects of iron pills. You should aim for most benefit for least side effects. The best is to go back to the primary care physician so you try lower doses and follow up with blood work. You can try the liquid form or take fiber supplements. But again make sue to follow up with the primary care physician.