Is it OK to Mail Prescription Medicines Through USPS?

Wondering if it’s legal to use USPS to ship drugs? It’s definitely important to remain compliant with federal and state laws regarding the shipment of medicines, drugs, and controlled substances via the USPS. Here’s a rundown of what’s allowed—and what’s prohibited.
Prescription medicines
According to USPS rules, if you want to ship prescription medicines, you must be a drug manufacturer, a registered agent of a drug manufacturer, pharmacy, medical practitioner, or other authorized dispenser.
Over-the-counter drugs
What about non-prescription medicines like pain and fever reducers (i.e. Tylenol, Advil), cold and cough medicines, decongestants, and antihistamine pills?
You can mail over-the-counter drugs, which are medicines purchased or obtained without a prescription. However, you would still need to be compliant with local and federal laws like the Poison Prevention Packaging Act and the Consumer Product Safety Act.
Controlled substances
Controlled substances, such as narcotics, anabolic steroids, and hallucinogenic drugs, cannot be mailed internationally and in cases of domestic mail, you would have to be an authorized dispenser, such as a medical practitioner or pharmacist. The USPS takes the shipment of narcotics very seriously, and the Postal Inspection Service Prohibited Mail Narcotics program investigates shipments of illegal drugs through the mail and works closely with state, local, and federal law enforcement agencies to combat this illicit trade.
Marijuana/cannabis
While marijuana/cannabis has been decriminalized in some states for recreational or medical use, mailing marijuana via the USPS is still illegal. Considered a Schedule I drug under the federal Controlled Substances Act of 1970, it is important to remember that marijuana is unmailable.
Drug paraphernalia
Drug paraphernalia, such as pipes of various materials, are considered restricted matter and cannot be mailed domestically or internationally.
For further information on USPS regulations regarding drugs and medicines, please see: http://pe.usps.com/text/pub52/pub52c4_019.htm
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What are nonmachinable envelopes?
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USPS Priority Mail vs. First-Class Mail: What is the speed comparison?
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UPS Worldwide Saver vs. UPS Worldwide Expedited: What is the speed comparison?
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How long does UPS Ground take?
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How fast is UPS Standard compared to UPS Ground Saver?
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