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What is the difference between doxycycline HYC and doxycline USP?

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suzanne66 12 Oct 2009

Virtually nothing. USP stands for United States Pharmacopoeia. Doxycycline USP means that the doxycycline conforms to the United States Pharmacopoeia standard. HCl stands for hydrochloride - Doxycycline HCl is the hydrochloride salt of doxycycline. Confused! free discount card

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