Best Protein Powder in Canada (2026): Ranked by Cert & Cost
The best protein powder for most people in Canada is Optimum Nutrition Gold Standard 100% Whey: 24 g of protein a scoop for CA$2.03 per 25 g on Amazon.ca. Informed Choice, a testing program, lists its product line.
By Erin Rose Updated October 18, 2026 How we score
Our pick for most people
Optimum Nutrition Gold Standard
CA$2.03 per 25 g · 24 g a scoop · 74 scoops
It mixes whey isolate and whey concentrate, so it has a little lactose. Informed Choice, which buys tubs from stores and tests them for drugs banned in sport, lists the Gold Standard 100% Whey line. In Consumer Reports’ 2025 lead tests it was among the lowest. It is our pick in the US too: best protein powder.
Which protein powder is right for you?
All whey isolate: Dymatize ISO100
ISO100 is hydrolyzed whey isolate, with less lactose than a whey blend. If regular whey upsets your stomach, try it first. Informed Choice lists the US ISO100 line. It costs about 62% more than Gold Standard per 25 g.
Dymatize ISO100
CA$3.29 per 25 g · 25 g a scoop
A Canadian brand with the most protein a scoop: ProteinCo Whey Isolate
ProteinCo has 27 g of protein a scoop from New Zealand whey isolate. Its Health Canada NPN (80060754) is a licence to sell it, not outside testing, and we did not find it on a testing list. It costs about 25% less than Gold Standard per 25 g.
ProteinCo Whey Isolate
CA$1.53 per 25 g · 27 g a scoop
No dairy: Garden of Life Organic Plant Protein
Garden of Life Organic Plant Protein is made from peas and other plants, with no milk. Its Amazon.ca listing says it is NSF Certified for Sport, but we could not find that tub on NSF’s list. In Consumer Reports’ 2025 tests, plant powders carried more lead than whey on average. It costs about 6% more than Gold Standard per 25 g.
Garden of Life Organic Plant Protein
CA$2.15 per 25 g · 22 g a scoop
Protein powders on Amazon.ca we compared
Cheapest per 25 g of protein first, at Amazon.ca prices checked November 6, 2026.
| Powder | Per 25 g of protein | Why it is or is not a pick |
|---|---|---|
| ProteinCo Whey Isolate | CA$1.53 | Most protein a scoop; NPN is a licence, not testing |
| Optimum Nutrition Gold Standard | CA$2.03 | Our pick: whey blend, Informed Choice lists the line |
| Garden of Life Organic Plant Protein | CA$2.15 | Plant protein, no dairy; NSF claim not matched to the list |
| Dymatize ISO100 | CA$3.29 | All whey isolate; Informed Choice lists the US line |
How we chose
We opened each product on Amazon.ca and read its listing, and the nightly price check keeps the prices current. We pick the powder that costs the least per 25 g of protein among those whose product line is on a public testing list. Brand claims of testing that we could not match to a list are shown as claims. How much protein you need: protein per day.
Questions people ask
What is the best protein powder in Canada?
Optimum Nutrition Gold Standard 100% Whey. It costs CA$2.03 per 25 g of protein on Amazon.ca, and Informed Choice lists its product line.
Does a Health Canada NPN mean a protein powder is tested?
No. A Natural Product Number is Health Canada’s licence to sell the product. It is not outside testing of what is in the tub. Look for a testing program such as Informed Choice, Informed Sport or NSF Certified for Sport.
Is a protein shake in a bottle better than powder?
Not better, just easier. A bottle travels well, but powder costs less per gram of protein. A 10-pack of Premier Protein Shakes is on Amazon.ca at CA$3.60 a bottle for 30 g of protein.