Protein

Optimum Nutrition Gold Standard Whey 5lb

$114.99

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

Gold Standard 100% Whey lists whey protein isolate as its first ingredient.

If you already know which flavour you want, buy it in this size.

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.