I have been taking sucralfate for a week already but have been feeling weird symptoms. I did discuss these symptoms with my gastroenterologist. He stated that this is the last medication he can help me with due to calling him for bad side effects with omeprazole and famotidine before prescribing sucralfate. My side effects are and not limited to: mild numbing on my left side arm, and feet, insomnia, back pain ( back pain was there before the sucralfate was prescribed ), difficulty breathing (mostly at night), and mild headache. The medication was prescribed to me without an endoscopy due to my gastroenterologist suspecting it's a stomach ulcer. There was also blood test requested by gastroenterologist to look into the cause. Are my side effects bad and should I stop taking the medication? My doctor had 36 years experience.