harmful side effects of zantac
Common side effects associated with Zantac (ranitidine) are headache, drowsiness, dizziness, insomnia, nausea, vomiting, stomach pain, diarrhea, or constipation. This is not a complete list of side effects associated with Zantac (ranitidine). Take Zantac (ranitidine) exactly as prescribed by your physician. Zantac (ranitidine) can be taken 150mg once to twice a day or 300mg once day.