I haven't studied amylase so I don't know much about it. Someone just shared with me that we may have a problem digesting protein (heck, it's in a lot of foods). So, you could try limiting protein for a week or so to see if your lips improve. I would give digestive enzyme supplements a try (whether you might have a fat or protein digestion problem). I think standard ones are called pancreatic digestive enzyme supplements. But Protease digestive supplements are for digesting protein.