Yes: Yes it is. Perhaps do not take it every 3 hours but a couple times a day will not hurt unless you are allergic to echinacea. Fresh fruits (orange juice and grapefruit) also contain vitamin c. You may find Zicam works as well for you.
Answered 2/18/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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