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Pharmaceutical and healthcare online databases.
Over 200,000 approved drugs and health products.
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Level 1
R - Respiratory system
R01 - Nasal preparationsR02 - Throat preparationsR03 - Drugs for obstructive airway diseasesR05 - Cough and cold preparationsR06 - Antihistamines for systemic useR07 - Other respiratory system products
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