It is difficult for me to say as there are various types all with different dose..like for example those with Vitamin B complex for molting and breeding birds and old birds and general wellbeing..
These are usually its main components..
Chloried of Cholein
Vit A, B1,B2,B6,C,D3,E,K3
Nicotinamide and stabilizers..
Sometime they includes calcium potassium etc..
Fo song boosters however L Carnitine Vitamin E and Tocoferol are the main components..
Basically, on cellular level, human cells require 78 colloidal trace elements and minerals (34 from land 44 from sea)..with 34 enzymes (4 digestive and 30 metabolic) and 17 amino acids...
The enzymes boost the chemical reactions in the body.
Basically amino acids are needed to transport the nutrients to the cells..without it there is no transport chain ..
Based on my understanding for mineral levels, the Vitavit you are referring to i should think is more suitable for humans.. Confused
Birds don't require as much and I do not really know all the chemical compounds in the vitavit you mentioned itself to make a statement..
Some plants like chrysanthemum causes rash in contact with birds mouth and others are poisonous and toxic to birds and some compounds like lactose will cause diarrhoea to birds as well..
Personally,I would advise against it unless you want to try on your less quality birds..And even if you do ..give it sparingly even though the bird will excrete excess thru waste some may remain as it cannot be digested properly,as such bird suffers from constipation...
The post above is by Rusty in Ketitir section:
I found it very useful therefor would like to post the info here too..