Leanfit

Sport Whey Isolate

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Leanfit Sport Whey Isolate

Overall

#274 in

Protein Powder

according to Reddit Icon Reddit

User sentiment53% positive
8
1
6
Last updated: Apr 9, 2026

Reddit Reviews

Reddit IconAgreed_fact 1.0
r/CostcoCanadaCalling all gym rats! How’s this protein?
2 months ago

Which is why I said you have to go with the isolate, which isn't priced as competitively. Certainly not the best for mix ability. Taste and quality? Sure, if you say so. There are better for like 10-15$/kilo more.

Reddit IconDadRobertX 1.0
r/CostcoCanadaThe BEST protein powder?
4 months ago

The Leanfit whey isolate tastes awful, precisely because it’s unflavoured. But it does pack 35 g of protein in 39 g of powder and has no added stuff (stevia, acesulfame, sucralose, coconut oil powder, sunflower oil, maltodextrin, “modified food starch,” and on and on). It’s what I buy. I drink it with a wide straw so that as little of it as possible passes my tongue.

Reddit Iconlilpisse 1.0
r/CostcoCanadaThe BEST protein powder?
3 months ago

Leanfit isolate is fine. The protein powder tho is awful. Very cheap ingredients and gross taste and doesn't mix well. ON is good you can technically get better but it's really overpriced. It is Gold Standard for a reason.

Reddit IconMeph514 1.0
r/CostcoCanadaCalling all gym rats! How’s this protein?
2 months ago

LeanFit Iso is cheaper and doesn't have artificial sweeteners (stevia doesn't count as artificial in my book).

Reddit IconNo-Dot-7661 1.0
r/CostcoCanadaCalling all gym rats! How’s this protein?
2 months ago

Leanfit whey isolate gives me no problems at all. It's unflavoured and doesn't taste bad at all.

Reddit Icontazmanic 1.0
r/CostcoCanadaBest protein at costco?
5 months ago

The best was Kaizen way back in the day. Then Gourmet Whey isolate was also a good one for a while Leanfit now has unflavoured whey isolate. I personally prefer unflavoured so I can flavour it to my liking and also use it for ice cream with my own sweetener of choice (I get me that sweet allulose from Trump land) Seems like a no brainer if you can get it on sale

Reddit IconPenguinbotxv 0.6
r/CostcoCanadaBest Costco Protein Powder
about 2 months ago

Used to be lean fit sport the one in the dark blue bag. It has some pretty good macros, doesn't taste that great though and it mixes only decently with a shaker bottle.

Reddit IconDustereeno 0.3
r/CostcoCanadaIs Leanfit Protein Powder Worth It?
9 months ago

Leanfit is good but I prefer the non-flavoured vs vanilla

Reddit IconJustSikh 0.3
r/CostcoCanadaCalling all gym rats! How’s this protein?
2 months ago

Leanfit has multiple different products at Costco. While what you say is true for their cheaper products, it couldn’t be further from the truth for their other products. The Leanfit unflavoured is the best product on the market for quality, taste, mix ability and price.

Reddit IconConcertaImodium 0.3
r/CostcoCanadaCalling all gym rats! How’s this protein?
2 months ago

Leanfit is 60$ at Costco and frequently goes on sale for 38$, also 5.5lbs so yeah this ain’t cheap at all lol

r/CostcoCanadaCalling all gym rats! How’s this protein?
2 months ago

Weird, I like it and even prefer it to many other brands