<s>[INST] Accidentally took and chewed half a pill of Aleve, thinking it was a TUMS tablet, which was laying directly next to it on the dresser. Within minutes, I noticed the burning & odd sensation, and tried to spit out remainder of it.. Rinsed mouth thoroughly, then took the intended TUMS. Had a past with a very mild allergy to ibuprofen.. Is this incident anything to be concerned about? No immediate side effects. [/INST] Hi,I can understand your concern regarding the accidental ingestion of half a pill of Aleve. There is nothing to worry about it. In addition to TUMS you can also take a stomach acid suppressant such as pantoprazole to minimize the stomach acidity related issues caused by half a pill of Aleve. Aleve (naproxen) may also have a similar allergic potential as that of ibuprofen. So, if you experience difficulty in breathing or rash you must visit the emergency room immediately.Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Mohammed Taher Ali, General & Family Physician </s>