- Severe abdominal pain.
- Pain in your chest, legs or back.
- Constipation or diarrhea.
- Nausea and vomiting.
- Muscle pain, tingling, numbness, weakness or paralysis.
- Red or brown urine.
- Mental changes, such as anxiety, confusion, hallucinations, disorientation or paranoia.
- Breathing problems.
THE LABS TO TEST FOR IT ARE RARELY DONE.