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.
Sales & Use Tax in California. The Sales and Use Tax Department is responsible for administering California's state, local, and district sales and use tax programs, which provide more than 80 percent of Board-collected revenues. I Need To. Obtain a Seller's Permit.