Not everyone has any side effects at all except for gradually clearing arteries. That's one of the advantages of long term statin use. Crestor, which is one of the best of them used not to be available on the NHS because it costs a little more but then has less side effects. You could start by taking 5mg of that daily and watching your diet or take 10mg daily and eat what you like.
Almost for certain though, the CAA produce their own list of approved brand name statins for pilot consumption but your AME should have access to that information?