Shipping
Shipping Policy
Orders are processed within 1–2 business days. You will receive a confirmation email with tracking information once your order ships.
Shipping Methods
USPS Priority
2–3 business days
$7.95
Free on orders over $100
FedEx Express
1–2 business days
$14.95
Fastest domestic option
International
5–10 business days
From $19.95
US, CA, UK, AU
Estimated Delivery Timeline
Typical domestic order via USPS Priority
Order Placed
Day 0
Processing
1–2 days
Shipped
Day 2–3
Delivered
Day 3–5
Order Placed
Day 0
Processing
1–2 days
Shipped
Day 2–3
Delivered
Day 3–5
Cold Chain Shipping
Peptides sensitive to temperature are shipped with insulated packaging and cold packs at no additional charge. We monitor weather conditions and may delay shipments during extreme heat to protect product integrity.
International Orders
We ship to the US, Canada, United Kingdom, and Australia. Import duties and customs fees are the responsibility of the buyer. Stakk is not responsible for delays caused by customs processing.
Processing Note
Orders placed after 2:00 PM EST or on weekends and holidays will begin processing the next business day. During periods of high demand, processing may take an additional business day.