Mel.
It may be my resolution but Alan looks a bit "green around the gills".
Have you checked his copper intake....
(He really looks great- wish I was so lucky)

I take Jarrow methyl B12 - 1000 mcgs from iherb 1 or 2 x a day.
http://iherb.stores.yahoo.net/b12.html
(100 to the bottle for $7.77)

Here's the 5000 - your sale price is a bit better, but I trust Jarrow.
http://iherb.stores.yahoo.net/b12big.html
(60 to the bottle)