Have you ever tried honey on his ulcers? I don't mean local store-type honey, but pure honey from bee farms. Pure honey forms a crust when applied to the ulcer, and it's a treatment I successfully used for many years as an RN in a hospital setting.

Correct me if I'm wrong, but I seem to remember that Alan has diabetes...... and if so, I don't know what locally applied honey would do to his blood sugars, but I'm sure there are others here who could help with that.