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Sometimes they are and sometimes they are not.

However,if they expire,you may really need them so that is bad.

Although, doctors sometimes give far too many to people.

They can be vary harmful i wouldn't take the chance i left the previous answer cause again i don't know very much about it i will post some related links.

Just as an added note:

Be sure to take all of the antibiotics prescribed, not just enough to make you feel better. You're only leaving the strongest, most evolved ones that survived the first dose so when they reproduce their offspring will be harder to kill.

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14y ago

What else can I help you with?