How to treat chronic dyspepsia, bloating, and constipation in my husband?

Hi doctor,

My husband is experiencing bloating and slight constipation. This is probably his 4th episode in a four-year time frame. An emergency visit and an urgent care visit followed the prior episodes. During the last episode, it was concluded that Tablet Alevue was the problem. He no longer takes tablet Alevue regularly (maybe three to four per month) but had a recent episode on Sunday night. Throughout the night, he could not get comfortable as the bloating and tightening in the stomach made it difficult to sleep. He exercises regularly and eats a fairly healthy diet. I will note that he did stop exercising over the summer for a knee injury but recently got back into the swing of his routine in mid to late September. Yesterday was able to eat (soup and bread) and had a bowel movement after eating, but he is still experiencing tightness in his stomach. Tablet GasX is not working. Again this does not happen weekly or even monthly (it is just very unpredictable) at this time. Any advice?