To request a Letter of Authorization (LOA) for CDE application, please complete West’s on-line LOA request form. Entering your Email below and clicking NEXT will allow you to access the form. Once you have entered all information (required information is denoted by an *), click Submit. After a successful submission, a confirmation Email will be sent to your attention. Your letter of authorization will be provided within 15 business days. If you have questions filling out this form, please contact China.LOARequests@westpharma.com or your sales representative for assistance.