never heard of silver biotics, but i know (and use several of these) these are fine for nursing.

clo
gse (grapefruit seed extract)
sambucol. (it is elderberry based, and is a big immune system booster)

also any of the otc homeopathic remedies, such as "cold relief" "cold-ease" "zicam" etc are fine.

for the migraine, have you tried "head-on" ? my dh gets migraines, and if he can catch it at the very beginning of it before it goes full-blown, he cna use head-on and it stops it. if it goes fiull-blown all that helps him is an anti-emetic like phenergan or zofran plus narcotics (they usually give him a morphine/toradol combo in the er), plus rehydration.

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