Shipping policy

Shipping Policy

Last updated: August 30, 2026

At Zentein Nutrition, we make and ship our products with care and want every order to arrive exactly as expected.

Order Processing

Most orders are prepared for shipment within 1–3 business days.

Processing times may be longer during holidays, major promotions, product launches, unusually high order volumes, or circumstances outside our reasonable control.

Delivery estimates begin once an order has shipped. Delivery times are estimates and are not guaranteed unless expressly stated otherwise.

Canadian Orders

Zentein typically ships Canadian orders using ICS Courier or Canpar.

Canada Post or another suitable carrier may be used for remote areas, PO boxes, service-dependent destinations, or when operationally appropriate.

Zentein reserves the right to select the carrier and service we determine is most appropriate based on destination, service availability, reliability, and operational requirements.

U.S. Orders

U.S. orders are generally delivered using USPS or another appropriate shipping partner.

Customs, border processing, weather, and carrier disruptions may affect delivery times.

Tracking

Tracking information will normally be provided after your order has shipped.

Carrier tracking may take some time to update after a shipping label is created.

Signature Required

Zentein may offer an optional Signature Required delivery service where available.

Signature Required may be recommended when:

  • a parcel may be left unattended for an extended period;

  • the delivery location has a shared entrance or common package area;

  • package theft is a concern; or

  • the customer would prefer additional delivery verification.

Without Signature Required, a carrier may leave a parcel at an appropriate delivery location according to its normal delivery procedures.

Selecting or declining Signature Required does not waive any rights provided by applicable law.

Zentein may also require or purchase Signature Required service for selected orders at our discretion, including higher-risk orders or replacement shipments.

Please note that an optional paid Signature Required checkout feature is not currently active unless it is specifically shown as an available shipping option during checkout.

Delivery Addresses

Customers are responsible for reviewing the shipping address entered at checkout.

Please contact Zentein as soon as possible if an address needs to be changed.

We cannot guarantee an address change after an order has entered fulfillment.

If an order is returned to Zentein because of an incorrect or incomplete customer-provided address, refusal of delivery, failure to collect the shipment, or another recipient-related delivery issue, additional shipping charges may apply before the order is resent.

Original shipping charges may be non-refundable where permitted by applicable law.

Delayed or Lost Shipments

If tracking has stopped updating or a shipment is significantly beyond its expected delivery window, please contact Zentein Support.

We may investigate the shipment with the applicable carrier before issuing a replacement or refund.

If a shipment is confirmed lost, or delivery cannot reasonably be completed following an appropriate investigation, Zentein will provide an appropriate resolution, which may include replacement or refund.

Tracking Shows Delivered

If carrier tracking shows that an order was delivered but you cannot locate it, please:

  1. Check around the delivery location, including entrances, side doors, mailrooms, and other safe-drop locations.

  2. Check with members of your household, neighbours, concierge, or building management where applicable.

  3. Review any carrier delivery photograph or delivery information.

  4. Contact Zentein Support if the parcel remains missing.

Zentein may review information including:

  • carrier tracking;

  • delivery photographs;

  • signature records;

  • delivery location information;

  • the shipping address provided with the order;

  • carrier investigation results; and

  • information provided by the customer.

Carrier delivery scans, photographs, signatures, and other records are important evidence used when reviewing delivery issues.

Where available evidence reasonably establishes that a shipment was correctly delivered, a refund or duplicate shipment will not automatically be issued solely because the package is subsequently reported missing.

Where delivery cannot reasonably be verified, or evidence indicates that the carrier delivered a shipment incorrectly, Zentein will provide an appropriate resolution.

Repeated delivery claims associated with the same customer or delivery location may require additional verification or Signature Required service for future orders.

Nothing in this Shipping Policy limits rights or remedies that cannot legally be limited or waived under applicable law.