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I have been taking Sundown Calcium for years - the other day I noticed they
no longer had the gf etc statement on the bottle so I called them today.
They can no longer guarantee the gf status of their products since they buy
from many different suppliers and the status changes with each batch.  The
woman suggested I call in each time with the bar code number and they can
tell me if it is gf or not.

Time to find a new source of calcium.