Innovative pharmaceuticals for a better life

Corporate Address

  • TWi Pharmaceuticals USA, Inc.
    115 West Century Road, Suite 135
    Paramus, NJ 07652

Shipping Point

  • Eversana (DLSS)
    4580 S. Mendenhall Road
    Memphis, TN 38141

Remittance Address

  • TWi Pharmaceuticals USA, Inc.
    75 Remittance Drive, Dept. 1421
    Chicago, IL 60675

Customer Service/Purchase Order Contacts

Contracts & Chargebacks

  • ALL contract inquiries (price validation, effective date inquiries, membership etc.) must be sent to
  • ALL questions or requests regarding current or historically-transmitted chargebacks (including resubmissions) must be sent to

EDI Requests or Issues

  • ALL EDI technical questions or issues must be directed to
    ASN and 856 inquiries will be sent to Eversana, as these do not generate from TWi. Chargeback and contract inquiries must be directed to the mailboxes above.


  • ALL requests for a Returned Goods Authorization for products must be directed to or by fax to 201-225-0051. Please do not send to any other address.
  • Physical returns should be sent to:
    TWi Pharmaceuticals USA, Inc.
    4580 S. Mendenhall Road
    Memphis, TN 38141

AR/AP Contacts

Adverse Events, Product Complaints and Medical Information

  • Adverse events, product complaints, or medical inquiries must be reported to the following phone numbers and email addresses:
  • Medical Information Email:
    Adverse Events Phone: 844-518-2989
  • Customer Complaints Email:
    Customer Complaints Phone: 844-518-2989