<s>[INST] i have cold and my doc. prescribed me azax 500 .although it helped me a lot but after taking the pill my body starts shaking from inside but not shivering and also i have a loose motion kind of experience after 4 hours of taking the pill.my Q. is is that normal and if not then what to do ? [/INST] Hi. I've gone through your query. I can understand your anxiety. Symptoms you experiencing might be due to azithromycin tablets you are taking. Usual side effects includes diarrhea, skin allergy, fever, Abdominal or stomach pain, drowsiness, dizziness etc. I advice you to, - Consult your doctor if there is severe diarrhea or any kind of skin allergies. - Avoid exposure to sunlight - Take tab. rantac along with it - Avoid taking antacids along with azithromycin ( 2hrs before or after the tablet). Hope I have answered your query. Let me know if I can assist you further. Get well soon. Regards, Dr. Yogapriya V, General and family physician. </s>