Several pre-authorizations have been carried out on my credit card, should I contact my banking institution?

If you try to complete an order more than once, you may see multiple pre-authorizations on your credit card statement. Don’t worry, these will erase themselves within a short period of 48-72 hours. We approve each order according to a precise verification, only one payment will be made.


How do I know if you have received my order?

You will receive a confirmation email when you have completed your order. An order number will confirm everything. If this is not the case, please contact us via


I ordered an item before a sale or promotion, can I get the reduced pricing?

Promotions do not apply to previous purchases. No price adjustment will be made.

How much are the shipping fees?

Here are the delivery costs applicable according to your order and region.


Shipping is free on any order of $99.99 or more. This is accounted for before taxes and after any discount (or coupon) applied, if so.

Some exceptions may apply in remote areas. (See information below)

$0-99.99 = $18.99

$99.99 + = Free shipping

Is it possible to cancel an order?

If your order is still “in process”, it is possible to send us an email at to cancel it. If, however, it is shipped, you must wait for receipt of the order to return it to us (at your expense).


How to track my order?

When your order is processed / shipped, you will receive a tracking number to track it via the shipping company used (Purolator, Canada Post or UPS).


Where is in-store pickup offered?

For the moment, the “In-store Pickup” option is available at our Burnaby, BC location, which you can find here:

Grind Stone Supplements

Unit 204A, 3430 Brighton Avenue

Burnaby, BC, V5A 3H40


I received my order but I no longer want the products, what should I do?

If the products are not opened, or are used less than 50%, you can return them, at your expense, to the following address:

Grind Stone Supplements

Att: Online Returns

Unit 204A, 3430 Brighton Avenue

Burnaby, BC, V5A 3H40


Once the products have been received and inspected, we will issue a refund for the order if the product is unopened and undamaged, and store credit if the product has been opened and used less than 50%, less the initial freight charges incurred by Grind Stone Supplements.

Where are you based?

We are based out of beautiful British Columbia. We are the western supplier of XPN, based out of Quebec, Canada.


I consumed an XPN product and side effects occur, what should I do?

You can get in touch with one of our agents via making sure to give full details of the situation (product consumed, flavor, production lot number (which is listed on the side of the label), expiration date), a follow-up will then be carried out as soon as possible.