Protein

Optimum Nutrition Casein 4lb

$124.99

Flavour

Add to cart

5% off any 2 · 10% off any 3 · 15% off any 5 — applied automatically in your cart.

Optimum Nutrition Casein is a slow-digesting protein built for lifters who want their recovery working overnight.

The 4lb tub keeps a nighttime shake in rotation for weeks of consistent training.

4lb tub of slow-release casein powder
Delivers sustained release protein that digests gradually between meals or before bed
Choose from Creamy Vanilla or Peanut Butter
Made by Optimum Nutrition

Nutrition information is on the product packaging.
Values vary slightly by flavour — the tub label is the authority.

Shipping. Orders placed before 2 pm ET on weekdays ship the same day. Standard shipping is free over $99; below that it's calculated at checkout. Most of Ontario and Quebec sees delivery in 1–3 business days; Western Canada and the Atlantic provinces in 3–6.
Returns. Unopened products can be returned within 14 days of delivery for a full refund. Opened tubs can't be restocked — if something's wrong with your order, contact us and we'll make it right.
Freshness. Everything ships sealed, from authorized Canadian distribution. If your order arrives short-dated, contact us and we'll replace it or refund it.