<s>[INST] Hi there. I would like some advice. I have been prescribed zantec recently to combat acid. But on monday I had a short episode of tightness in my chest and a very short spell. Of dizziness. It hasnt happened since. I am taking zantec again and trying to eat more healthily [/INST] Thanks for your question on Chat Doctor. I can understand your concern. No Santa (sanitizing) can not cause such symptoms. Actually your symptoms are more suggestive of HERD (gastroesophageal reflux disease). And Santa is antacid. Along with Chat Doctor.  1. Avoid stress and tension. 2. Avoid hot and spicy food. Avoid junk food. Avoid large meals, instead take frequent small meals. 3. Keep 2-3 pillows under head in the bed to prevent reflux. 4. Quit smoking and alcohol if you have these habits. 5. Lose weight if you are obese. Don't worry, you will definitely improve with all these. Hope I have solved your query. Wish you good health. Thanks. </s>