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Pharmaceutical and Healthcare Online Databases.
Over 100,000 approved drugs and health products.
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Level 5
J - Antiinfectives for Systemic Use
J01 - Antibacterials for Systemic Use
J01C - Beta-Lactam Antibacterials, Penicillins
J01CE - Beta-lactamase sensitive penicillins
J01CE01 - Benzylpenicillin
Benzylpenicillin
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