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Penicillin is not effective against common …

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Penicillin is not effective against common cold why
  • 2 answers

Lovepreet Kaur Kalsi 2 years, 4 months ago

Because antibiotics only fight against bacteria not viruses.

V A 2 years, 4 months ago

Because antibiotics only fight bacteria, and not viruses, they're usually ineffective against colds. Sometimes a cold may lead to a bacterial infection,
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