Purchasing/Customer Support

Click on topics below. For more information, download our Ordering Information PDF.

Customer Service


  • United States and Canada:​ +1-301-881-0666 | (Toll Free) 1-800-227-8772
  • Select Europe: 00-800-4875-5555
  • Email: custsvc@usp.org
  • Fax: +1-301-816-8148
  • Hours of Operation: Monday through Friday 4:30 AM to 5:00 PM EST.

Languages Spoken

English, Spanish, French, German, Russian, Italian, Arabic, Mandarin Chinese, Korean, Hindi, Urdu, Bangla, Punjabi.

If you require an interpreter for another language, please ask a USP Customer Service Representative for an interpretation service.

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Ordering Direct from USP


Visit the Products & Services section of this website to find and order the USP products you need.


Call +1-301-881-0666, 1-800-227-8772 (U.S.), or 00-800-4875-5555 (select Europe), Monday through Friday 4:30 AM to 5:00 PM EST.

Fax, Mail, E-mail

Send your purchase order via fax, mail, or e-mail. USP will confirm your order within two business days.

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Payment & Billing

Price Quotes on Request

  • Call +1-301-881-0666 or 800-227-8772 or email custsvc@usp.org to get a quote. Prices on an official quote provided by USP are good through the date specified on the quote.
  • When ordering based on a USP price quote, provide the quote number on all checks, wires, and/or credit card orders.
  • USP strongly recommends you obtain a price quote if paying by wire transfer.
  • Controlled substances orders require a price quote from USP.

How to Pay

  • Credit card: USP accepts valid Visa, MasterCard, or American Express. Credit cards are billed when an order ships.
  • Check: Make checks payable to USP, in U.S. dollars, and drawn on a U.S. bank. Mail check payments to: 12601 Twinbrook Pkwy., Rockville, MD 20852
  • Wire transfer: Include your USP Quote number or invoice number and your customer number on the wire transmission information. Fax a copy of your wire receipt and order to USP once the wire has been sent. Bank remittance information is currency specific. Call 1-800-227-8772 (U.S. and Canada), 00-800-4875-5555 (select Europe), or e-mail custsvc@usp.org for payment instructions. Customers are responsible for paying all bank fees for wire transfers.

Sales Tax

If your shipping address is located within any of the following states (territories), your order will be subject to sales tax unless we have a current exemption form on file.

  • California
  • District of Columbia
  • Illinois
  • Maryland
  • Michigan

Invoices from USP

You will be sent an invoice for your USP purchases regardless of which payment method you select. Request to receive your invoice by fax or email.

Credit Hold

If your order is put on credit hold by USP, you will be informed of the same and must clear the hold within 14 days. Otherwise, your order will automatically be canceled and you must reorder.

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Reference Standards Quantity Discount (Online Only)

A 5% discount applies to quantities of 10 or more of the same item purchased through the USP Store. Discounts do not apply to Reference Standards purchased for resale, including USP Distributors, and do not apply if the order is placed by phone, fax, mail, or email. If you need assistance creating a USP Store account, e-mail custsvc@usp.org.

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Shipping & Delivery

General Information

For shipping rates, customs information, payment methods, and more, download our Ordering Information PDF.

  • USP uses FedEx as its default shipping carrier. We use alternative carriers for locations with no FedEx service.
  • For eligible items, customers may choose a carrier by giving USP their DHL (international only), UPS, or FedEx account number for eligible items.
  • USP does not ship products to post office boxes. Please include a street address or your order will not be delivered.
  • International customers are responsible for paying all customs duties, taxes, or tariffs levied for importation of USP products.
  • Customers can request special, guaranteed, or same-day shipping for an additional US$75.00 charge.
  • USP ships all Reference Standards orders via air courier.

Surcharges for International Controlled Substances and Dangerous Goods

A $235 per-order surcharge applies to:

  • Controlled substances shipped internationally.
  • Dangerous shipments to select countries

NOTE: These charges do not stack, meaning the $235 surcharge is only applied once, even when sending controlled and dangerous goods, for example.

Preferred Carriers for Dangerous Goods

Reference Standards classified as dangerous goods have specific shipping requirements. To find a current list of required freight carriers for any order that contains a Reference Standard that has been classified as a dangerous good by the United Nations, download our Ordering Information PDF.

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International Orders

Order Direct from USP

Using product resellers, such as book or chemical supply houses, can add up to eight weeks to your order fulfillment time. Typically, USP processes orders for all our customers in less than two business days. But USP cannot control how long a reseller keeps your order before giving it to USP for processing or how long they hold the product before passing it along to you.

Authorized Distributors

International customers may order USP products directly from USP or from one of our Authorized Distributors. Download our authorized distributor list to find a USP Authorized Distributor in your region.

Credit Card

If you must prepay, please use a valid credit card. USP accepts Visa, MasterCard, and American Express. Credit cards are the easiest payment method. Avoid checks or wire transfers, if possible.

Official USP Price Quote

If you must prepay, get an official USP price quote before ordering. Having an official USP price quote allows you to arrange payment with the security of knowing the price will not change until a specified date. Also please reference the USP quote number on all checks, wires, and/or credit card orders. This will improve accuracy and shorten order processing time.

Customs Clearance

USP does not offer customs clearance services. We suggest that you arrange for a customs broker to facilitate clearance or allow FedEx to clear customs for you. Customs clearance is often the longest part of your product delivery time. Customers are responsible for paying all customs duties, taxes, or tariffs levied for bringing USP products into your country.

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Special Instructions for Ordering Controlled Substances

Controlled substances are Reference Standards items regulated by the U.S. Drug Enforcement Administration (DEA).

List Chemicals

List of Reference Standards categorized by the DEA as List Chemicals.

USP Catalog NumberProduct Description
1050905Benzaldehyde (3 x 1 mL)
1082592Butyl Anthranilate (1 mL)
1235999Ephedrine Hydrochloride (200 mg)
1236007Ephedrine Sulfate (200 mg)
1240004Ergonovine Maleate (100 mg)
1241506Ergotamine Tartrate (150 mg)
1533909Phenylpropanolamine Bitartrate (100 mg)
1534005Phenylpropanolamine Hydrochloride (250 mg)
1581005Pseudoephedrine Hydrochloride (125 mg)
1581504Pseudoephedrine Sulfate (200 mg)
1607299Safrole (4 X 50 mg) (5-allylbenzo-1, 3-dioxole)
1699049Tropicamide Related Compound D (15 mg) (2-phenylacetic acid)

DEA Requirements for Controlled Substance Orders Shipped Within United States

List Chemicals:

  • Orders in writing
  • Copy of customer's current DEA registration or letter on company letterhead stating the intended use of the list chemical for each order placed

DEA Schedules I and II:

  • Orders in writing
  • Copy of customer's current DEA registration on file with USP
  • DEA form 222, properly completed

DEA Schedules III, IV, and V:

  • Copy of customer's current DEA registration on file with USP
  • Orders in writing

DEA Requirements for Orders Shipped Outside United States

USP cannot ship controlled substances outside the United States without proper authorization from the DEA. To ensure you meet all requirements for correct ordering, email custsvc@usp.org or call one of our International Controlled Substance Team members:

List Chemicals

  • A copy of the import permit and statement of its use if controlled in the country to which it is being exported.

DEA Schedules I, II, III, IV, and V

  • Original import permit or letter of no objection (in English or accompanied by an English translation) valid at least 90 days from the date of its receipt by USP Customer Service.
  • A statement of non-reexport and use exclusively for medical or scientific purposes from the importer (in English or accompanied by an English translation).

General Information


  • Add US$25.00 to all unit prices for all DEA controlled substances and list chemicals shipped outside the United States.
  • Download the Ordering Information PDF for freight charges for your international controlled substance order.
  • Orders for controlled substances to be shipped outside the United States must include full payment (see Payment & Billing) or a purchase order for customers with approved net terms from USP.

Special Handling

  • Special Handling fees may be charged by USP to obtain certificates or documents required by foreign countries in order to import USP Reference Materials. These fees are in addition to the cost imposed by the foreign authority to obtain the certificate(s).
  • The special handling fee is US$25.00 per certificate.
  • All international controlled substance orders are shipped door to airport.

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Currency Change Request (PDF)

On request, USP may issue invoices and receive payment in U.S. Dollars, Euros, British Pounds, and Canadian Dollars. Download Currency Change Request Form.

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Credit Application (PDF)

Complete this Credit Application to open a line of credit with USP. Restrictions apply.

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