Stop using caffeine and ergotamine and call your doctor at once if you have a serious side effect such as:
sudden numbness or weakness , especially on one side of the body;
sudden headache , problems with vision;
fast or slow heart rate;
muscle pain in your arms or legs;
numbness or tingling and a pale or blue-colored appearance in your fingers or toes;
severe pain in your stomach or lower back;
urinating less than usual or not at all;
painful sores on your rectum after using the rectal suppositories;
swelling or itching in any part of your body;
cough with stabbing chest pain and trouble breathing; or
dangerously high blood pressure .