New accounts are always welcome! There are no minimum order requirements, and most orders placed before 2PM CST will be shipped the same day. Please note that prices are subject to change without notice.
Orders for Pharmaceutical Products
Sigma Pharmaceuticals ships products only within the United States and only to purchasers appropriately licensed in the United States. A state license number must be provided upon ordering. Sigma Pharmaceuticals, LLC assumes no liability for purchaser or user compliance with state laws or review of professional or product literature.
Sigma Pharmaceuticals accepts all major credit cards for payment. Payment on invoice with Net 30 terms is also available. For payment on invoice when ordering via our website, please contact our Customer Care Department at 800-779-3784 to enable this payment option.
All returns require prior authorization. To obtain a Return Authorization Number, please contact our Customer Care Department at 800-779-3784 within thirty (30) days of receipt of the product to be returned. Returns should be sent to:
Sigma Pharmaceuticals, LLC
Attn: Returned Goods Department
955 236th St, Ste 1
North Liberty, IA 52317
All merchandise must be returned unopened in its original packaging and must be in resaleable condition. A copy of the applicable invoice as well as the Return Authorization Number must be included with returned merchandise. Credit for returned merchandise will be issued only if such merchandise has been returned in accordance with this policy and only upon review by Sigma Pharmaceuticals of the products and quantities actually returned. Special order items are not eligible for return. Sigma Pharmaceuticals retains complete discretion regarding returns of product not shipped in error by Sigma Pharmaceuticals
You can download a copy of our convenient fax order form by clicking on the following link: