[Dysphagia] Alternatives for Blue Dye

[sharon.manders at gmail.com (Sharon Manders)]

Hi,

I have been asked about alternatives for blue food colouring - such as
blueberry or grape juice. Does anyone use anything like these as an
alternative and if do, do you find it easy to see or does it go more red in
colour once it has been given to the patient?

I don't wish to debate the whole blue dye/food colour thing - I simply want
to know what people use.

Thanks a lot,

Sharon
-- 
"Death is caused by swallowing small amounts of saliva over a long period of
time."
- George Carlin