Trapped wind

Our baby is very difficult ro get his wind up then ends up with trapped wind. You can see him straining to try and pass wind. He can get very upset and its heartbreaking seeing him like this. We've tried infacol which is sort of working as well as massaging and bicycling. From looking through these groups other people have used windi gas, which we are looking into, baby probiotics and gripe water. What worked best for you? What probiotics did you use? We are from the UK.