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Pharmaceutical and healthcare online databases.
Over 200,000 approved drugs and health products.
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Level 3
C - Cardiovascular systemC02 - AntihypertensivesC02A - Antiadrenergic agents, centrally acting
C02AA - Rauwolfia AlkaloidsC02AB - MethyldopaC02AC - Imidazoline receptor agonists
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