Doxycycline is used for malaria prophylaxis or treatment. When it is administered for treatment of P falciparum malaria, this drug must be used as part of combination therapy (eg, typically with quinine or quinidine).
If you buy goods and are not charged the Rhode Island Sales Tax by the retailer, such as with online and out-of-state purchases, you are supposed to pay the 7% sales tax (less any foreign sales tax paid) for these items yourself as the Rhode Island Use Tax.
Generally, Sales/Use tax is paid to a retailer registered to collect the tax. If Sales/Use Tax is not paid to the. retailer, the purchaser must self-assess Consumer Use Tax at the rate of 6 percent for state Consumer Use Tax plus any. City and County Consumer Use taxes that are due and remit the tax to this department.