We accept American Express, MasterCard, Visa and Discover as well as cashier's checks and money orders. When paying with a credit card, your card is not billed until your order is shipped. Make checks or money orders payable to SI03, Inc. and send along with your order to:

SI03, Inc.
Attn: Order Processing
P.O. Box 1715
Cape Girardeau, MO 63702

Please make sure that your shipping address, phone number and email address are included in your order. WE DO NOT ACCEPT PERSONAL CHECKS OR SHIP COD (Cash On Delivery). We cannot guarantee immediate availability of the product upon receipt of payment.

Promotional / Voucher / Coupon / Discounts

Claimants must comply with these Terms & Conditions for a voucher to be valid

•  To redeem the voucher, the claimant types the voucher code into the promotional box in the appropriate field of the SI03 website and the relevant discount will be automatically deducted from the final price of the qualifying purchase. If the claimant fails to enter the voucher code at the time of purchase as specified, the purchase will not be eligible for the discount. Discounts may not be claimed after confirmation of a claimant’s purchase.

•  Purchases made with a voucher are subject to product availability.

•  A voucher cannot be applied to any prior purchase.

•  Vouchers are not redeemable for cash and cannot be combined with any other vouchers or any other offer or discounts or promotions.

•  Vouchers only apply to purchases of the product(s) specified on the voucher.

•  Only one voucher per household may be redeemed.

•  If claimant returns any of the product(s) purchased with a voucher, the voucher discount or value may be subtracted from the return credit.

•  Applicable shipping and handling charges apply to all purchases and returns.

•  SI03, Inc. shall not be liable for any loss, damage or injury suffered or sustained (even if caused by negligence) as a result of accepting and/or using the voucher, except for any liability which cannot be excluded by law.

•  SI03, Inc. reserves the right to discontinue this promotion at any time without notice.

•  Void where prohibited by law.

•  SI03, Inc. has no obligation to pay any tax or fee in conjunction with the distribution or use of any voucher. Claimant is required to pay any applicable sales tax and/or other fee related to the use of the voucher.

Subscribe N' Save (Subscriptions)

Syntrax offers a 10% discount on all product purchases placed via our "Subscribe N' Save" subscription/renewal feature. Products can be purchased in 1, 2, or 3 month intervals. The customer can choose which interval they prefer each product to be received. Subscription purchases automatically deduct 10% off for each initial purchase as well as each renewal.

Subscription renewal reminder emails will be sent to customer's email address that was used to order the subscription 5 days prior to renewal. If renewal dates fall on a weekend the order will be processed the previous Friday. Renewal dates can be postponed or moved to a different date at any time by logging into our shopping cart and adjusting your subscription preferences.

Subscriptions can be cancelled at any time by logging into your account and selecting which subscriptions you would like to cancel. Subscriptions must be cancelled a minimum of 3 days prior to your next renewal or you will still receive and be charged for that renewal. If you need assistance in cancelling any of your subscriptions, please send an email to

Cancellation Policy

If you wish to cancel an order before it is shipped, simply contact us, and you will not be charged. If you need to cancel an order that has already shipped, you will need to notify us that you wish to cancel your order and you will only be charged for the shipping of the order. When delivery is attempted, you will need to refuse the shipment; once it is received and processed at our facility, we will refund the amount of your order less the shipping and handling fee.

Sales Tax

Applicable sales tax will be charged on all orders to be delivered within the state of Missouri.

International Orders

At this time, we can only ship orders to the United States and Canada. We apologize for any inconvenience this may cause. If you are in another country and would like to purchase Syntrax products, please contact or 866-333-7403 x 814 for assistance in locating an international distributor.


All credit card orders placed before 2:00 PM Central Standard Time on any business day will normally be shipped that same day--subject to payment approval and item availability. Any order submitted to the shopping cart after 2:00pm Central time on a Friday will not be processed until the following Monday. Same day shipping is not guaranteed; due to the volume of incoming and outgoing freight, our warehouse has 24-48 business hours to process an order once they have received it. If your shipping and billing address are different, please make this clear; otherwise, shipping may be delayed because of verification requirements. We encourage our customers to use the same billing address for shipping, as it reduces processing time.

Shipping charges are $5.00 for any domestic retail order under $75.00, shipped within the continental US. A shipping fee of $15.00 will apply to ALL orders shipping to Alaska, Hawaii or Canada. If your order is over $75.00 you will receive FREE shipping (excludes orders to Alaska, Hawaii, or Canada). Our shipping option on all retail orders is UPS or UPS SurePost. You order will be shipped via the best method based on the order weight and destination. If you would like faster shipping, please call for a quote. Alaska, Hawaii, and Canadian shipping charges are $15.00, free shipping is not available for customers in those areas, we apologize for any inconvenience. If you use a discount code and the order drops below $75.00 please note that the shopping cart may not add the $5.00 shipping fee, it will be added manually when the order is processed through our system. The shopping cart may not add the $15.00 shipping fee for Alaska, Hawaii, or Canada orders, it will be added manually when the order is processed through our system.

UPS is our standard carrier and your order may be shipped by UPS Ground or by UPS SurePost. SurePost is a partnership between UPS and the United States Postal Service where UPS picks up an order from our facility and transfers it to the post office in the town of final delivery. SurePost orders are generally delivered by your local postal worker, however, in some cases, UPS will see the package through to final delivery.

UPS Next Day delivery is available in most areas of the contiguous United States; please call for a shipping quote.

UPS Ground will not deliver to P.O. Box addresses. If you require your product to go to a P.O. Box you will receive it via the United States Postal Service or UPS SurePost.

Canadian customers, please note that some carriers charge import fees for bringing products across the international border. These fees are charged by the carrier, not us, and are the full responsibility of the customer.

Returns or Exchanges

SI03, Inc. offers a satisfaction guarantee on Syntrax® products. If you purchase a Syntrax® product that you are not satisfied with, please contact our customer service department by phone at 866-333-7403 x 800 for return or exchange information. Our office hours are Monday-Friday, 8am-5pm central time, excluding major national holidays.

Satisfaction—If you wish to return a flavor that you do not like due to taste, etc., contact our customer service department for a return authorization number. Once you have a return authorization number, return the product at your cost to: SI03, Inc. Attn: Returns 3849 Business Park Pl, Cape Girardeau, MO 63701

The return must contain a note with following information: Name, return authorization number, physical address, daytime phone number, email address, reason for return, product/flavor you would like to receive in exchange. Once the return is received and processed by our warehouse, the replacement of your choice will be shipped at no charge to you. *If you would prefer a refund, include your original invoice number and credit card information. Credit Card information is not kept on file, so if it is not included, we cannot process a refund. Refunds will be issued based on the final sales price after any discount code that was used. Once the return is received and processed by our warehouse, a refund will be issued to your card and you will receive a confirmation email. If you purchase a Syntrax® product from another retailer, please resolve the return or exchange through the original place of purchase. If the retailer refuses to honor the guarantee, we can offer to exchange if the product is returned to our warehouse after contacting customer service for a return authorization number. We cannot issue refunds for products that were purchased from other retailers. From time to time, SI03, Inc. will offer special discounts on Syntrax® products. Items offered at a greatly reduced or blow-out price may not be eligible for return or exchange. If an item is not eligible for return or exchange, it will be designated as “All Sales Final, No Returns or Exchanges” on the shopping cart.

Warehouse or Invoicing Errors—If you place an order and receive the wrong item, please contact the customer service department. Arrangements will be made to issue a return service label for the error item and the correct product shipped.

Security Policy

Our Security Policy guarantees that your personal information is safe and secure. Every credit card purchase you make at our site is backed by this guarantee. Explanation of Security Features We use Secure Socket Layer (SSL), which is an industry standard and one of the best security encryption protocols available today for secure e-commerce transactions. SSL encrypts all of your personal information, including credit card numbers, name and address, so that they cannot be read as the information travels over the Internet. At SI03, Inc. we stay informed of developments on the Internet and on Internet security so that we can ensure that our security software is always the latest and most up to date.

[Note: An additional "security" feature is that we will ship only to the address that your bank has on file for the credit card you are using. This means that if someone other than you tries to use your credit card number, they will not be able to order and receive those goods. If for any reason you want an item to be shipped to some address other than your credit card address, a customer service representative will contact you by telephone as a final check before the item is shipped.]

All of your personal information is used only to ensure the smooth processing of orders that you have placed. Our staff uses this information for contacting customers as part of our ongoing commitment to ensure quality customer service.

Passwords offer additional protection. Once you have an account and a password, purchasing products and checking the status of your order becomes even simpler--as simple as typing in your e-mail address and password. The use of your password ensures that only you can order products under your name.


Because we value our customers and respect their privacy, all personal information provided for order processing is used only to ensure a wonderful e-commerce experience for you. Your information is intended solely for use by our customer service department in their pursuit of achieving the highest level of customer satisfaction possible.

We promise NEVER to sell any list containing customer information of any sort.