I have a ulcer and i feel toxic what can i do?

Go see your doctor: You didn't mention where your ulcer is located but i assume you're referring to your stomach b/c you're taking sucralfate. Best to tell your prescribing doc how you feel. Perhaps you can consider other options such as a proton pump inhibitor. If this isn't enough, a gastroenterologist should look inside for other causes that aren't responding to usual therapy. Bottom line, keep in touch w/your doc.