Hi Dear, Welcome to HCM. Understanding your concern. Thanks for your query . There can be many reason for excessive salivation . But in your case it seems to me that acidity will be the probable cause of ulcers and excessive salivation. When acidity occur in stomach body produce excessive saliva to neutralize the effect of acid . This is the reason why there is excessive salivation after eating . Iron supplement is not known to cause such effects . I would suggest you to avoid eating spicy and heavy meals , take frequent and light meals and eat at least one hour before going to bed. Consult gastroenterologist for proper evaluation and treatment. Doctor may prescribe antacids like gelusil and H2 blocker like ranitidine for reducing acidity. Take ibuprofen(if not allergic) or acetaminophen for pain. Also consult dentist for dental cause. Hope your concern has been resolved. Best Wishes, Dr. Harry Maheshwari