When the lips are messed up from supplements and meds, my opinion is, go ahead and practice. Don't get upset about how you may sound. Practice the best you can. Many aspects of horn playing are worse-- tone, accuracy, high range, intonation. But, try really hard to play the best you can. With super concentration, you can play better. This kind of practice improves one's overall horn playing then when the lips are in good condition. Practice when playing is bad does bring overall improvement.I love his making-lemonade-out-of-lemons attitude. Thanks, Larry.
Another horn player has added an item on krill oil to the list of things that can trigger lip swelling. See this new entry, #20.