There are 4 tablespoons in a quarter cup and there are 3 teaspoons in each tablespoon; this means that there are 12 teaspoons in a quarter cup. A quarter cup is also equal to 2 fluid ounces.
In brief: Yes. Opiods have a slowing effect on gastomotility commonly causing side effects like constipation and nausea. Abrupt withdrawal of opioids from the system can cause rebound hypermotility of the GI tract which usually presents as diarrhea as well as GI spasm or craming causing abdominal pain (stomach pain).
One of the most common side effects of medicine like Ibuprofen, aspirin and Aleve is stomach upset. I usually tell people to stop it if it bothers their stomach. You could develop a stomach ulcer with prolonged use if it hurts your stomach. Unfortunately, Tylenol or narcotics are your next choice for pain relief.