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Optimum Nutrition100 Casein Protein
(94 Reviews)
$62.99
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Recent Reviews

Best product

Excellent quality

JOSUE GVerified Buyer

good stuff

keith sVerified Buyer

Works like a charm

Dvonte MVerified Buyer

Delicious.

Edouard FVerified Buyer

Protein

Great quality

ROBERT SVerified Buyer

The best

I've been using it for 10+ years it's the best

Silvester RVerified Buyer

Good stuff

Good stuff

Michael MVerified Buyer

Just perfect

Just perfect , taste just like chocolate, i dont feel bloated anymore and im having crazy results?

VISA CVerified Buyer

Just perfect

Just perfect , taste just like vanilla , i dont feel bloated anymore and im having crazy results?

VISA CVerified Buyer

10 out of 10

Ryan CVerified Buyer

Smells like SunBum spray sunblock

This smells like SunBum spray sunblock -- tropical, coconut-ish. It's not a bad smell (especially for sun block). But it's off-putting for a food item. It is easy to mix (much easier than the out-of-stock-for-months Beyond Raw ISO Casein PM). Flavor is okay, not terrible. And I could get used to it if I had to. The picture of the ingredients label still shows Yellow #5 but I don't see it on there now, so that's good. Am going to try something else (and since everything at GNC is out of stock re: casein that means a completely different brand). If I had to come back to using this I would.

BRIAN AVerified Buyer

Great all-around protein

great product! TY

Don HVerified Buyer

Best flavor casein protein

This is thick and chocolatey…perfect for a nighttime snack. I add a scoop to sugar free chocolate pudding along with some water to the consistency I want and it’s a healthy desert!

kathy sVerified Buyer

Satisfactory flavor all in all

First impressions were that this flavor of casein tasted awful. The beyond raw p.m chocolate casein brand was out of stock at the time and so I ordered this kind of brand one to supplement with instead. After a couple shakes you get accustomed to the flavor (that's pretty good honestly) and it's not too bad at the end of the day.

Aaron WVerified Buyer

Meh

Flavor is just ok. Very difficult to mix. Recovery times feel similar to longer than other casein proteins I've tried

Ken TVerified Buyer

Excellent

Love the taste!!

glenda sVerified Buyer

Good nice time

Very good yes

John IVerified Buyer

pretty good

mixes wells in water with just a spoon and tastes pretty good just not as chocolatey as i was hoping . i’m just not sure why they use such a huge container if it’s only going to be filled half-way…it’s taking up a lot of space on my counter lol but besides that no complaints.

Gbemisola AVerified Buyer

gold standard casein protein powder

tastes great, mixes well, and easy on my stomach.

BRANT SVerified Buyer

Love it, it’s the only brand I use

Michelle MVerified Buyer

This is very good

April ZVerified Buyer

CASEIN

Casein is one of the WHEY proteins I have been using/drinking for a few years.

Douglas L EVerified Buyer

Great taste And Does The Job

I was looking for something to help with recovery. This is now my go-to product. It tastes awesome and I stack it with BCAA and Glutamine Powders.

MIKE MVerified Buyer

It is everything I expected from ON.

Brian CVerified Buyer

I normally have it before bed and I do not wake up hungry

Peter EVerified Buyer

Be back for more.

Great taste. Good value. Because it is Casein you NEED a good shaker bottle to mix, but beyond that I am happy with it.

Michael MVerified Buyer

A must have for recovery and muscle growth.

Good taste, mixes well with shaker. Excellent for overnight recovery after workout.

Paul KVerified Buyer

Delicious tasting Casein protein powder.

John GVerified Buyer

Good tast

As described

John PVerified Buyer

A great choice protein

I've bought this brand a few times before and have always been happy with it. I think this protein seems high quality and good price per pound. I mix it with water or milk and it's not clumpy. I also mix a shake and put it in oatmeal and let sit overnight in the fridge for a high protein oatmeal breakfast-tastes great. Would order more of this in the future.

Kevin MVerified Buyer