Dull pain in left and right lower abdominal quadrant. what can i take to relieve the pain. it is not serious with no other side effects.

Depends: I am glad this seems not to be serious to you. One suggestion can be using over the counter meds like acetaminophen, or ibuprofen: however, both of these meds may cause problems or may not be a good choice depending on your medical history. Such pain can be from benign things like constipation, but more serious problems can also start this way. Especially at age 81, if the pain continues, be seen.