Is colostrum good?
✅Yes.

Are immunoglobulins better?
✅Yes.

Colostrum is great for the immune system because it contains antibodies. Antibodies are also called immunoglobulins. "Immunoglobulins (Ig) or antibodies are glycoproteins produced by plasma cells."
National Library of Medicine
Immunoglobulin

An immunoglobulin concentrate is a higher concentration of antibodies than colostrum. The source is cleaner. The chances of sensitives and allergens are lower. An immunoglobulin concentrate is dairy free. A concentrate of immunoglobulins/antibodies is going to be better than colostrum.

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