100% Casein Protein (Optimum Nutrition)

User rating

3.8

out of 5

1567 user reviews

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Format	Store	Notes	Price/serving	Price
4 lb	A1Supplements.com	Shipping: Calculated by weight Save $5 on orders > $90: Code - 5OFFA1 Free gift with orders > $90 Save 4% on orders > $200 Save 8% on orders > $500	$0.74	$42.95
4 lb	I'll Pump You Up	5% off any order: Code - SubstanceReviews	$0.74	$42.95
4 lb	Bodybuilding.com	Shipping: Flat rate - $5.99 (up to 40 lb) 5% off new customers: Code - NewCustomer5PerOff Other coupon codes on the left side of this page	$0.77	$44.89

Sometimes slower is better - especially when it comes to the rate of protein digestion. While rapid protein absorption is desirable immediately before or after exercise, delayed release is probably more beneficial throughout the remainder of the day.

Casein proteins are pH sensitive and gel in the acidic environment of the stomach. As a result, it can take more than twice as long for caseins to be broken-down into their amino acid sub components than whey and other proteins. Because of these unique "time-released" qualities, caseins are aptly described as being anti-catabolic, or muscle-protecting, proteins.

Average user rating from: 1567 users


Overall rating		3.8
Euphoria (4 ratings)		3.9
Mental energy (1 rating)		1.0
Focus (1 rating)		0.5
Length of effects (1 rating)		5.0
Low development of tolerance (1 rating)		1.0
Low dependence (1 rating)		1.0
Fat loss (22 ratings)		4.4
Vascularity (3 ratings)		2.2
Pump (4 ratings)		4.0
Thermogenic effect (2 ratings)		3.5
Texture (468 ratings)		4.0
Muscle gain (66 ratings)		4.4
Strength (21 ratings)		3.8
Taste (1386 ratings)		4.2
Mixes well (402 ratings)		4.3
Safety (5 ratings)		5.0
Suppressed appetite (19 ratings)		3.9
Recovery ability (81 ratings)		4.7
Anti-catabolic (37 ratings)		4.7
Endurance (6 ratings)		3.6
Low side effects (2 ratings)		3.0
Physical energy (11 ratings)		4.2
Value for money (125 ratings)		4.3
Ingredient profile (39 ratings)		4.5

Reported side effects (adverse events)


Diarrhea	4 users (0%)
Difficulty sleeping	2 users (0%)
Gas or bloating	7 users (0%)
Nausea or vomiting	4 users (0%)
Shakes	7 users (0%)
Upset stomach	5 users (0%)

Find other supplements effective for

Muscle gain


Texture		Add a little water to milk and casein to make smoother
Taste		The taste is pretty good and mixes well in blender.
Taste		Tastes better in milk obviously then water.
Mixes well		The taste is pretty good and mixes well in blender.


Taste		Just started this, and it tastes amazing, as does all of Optimum's supplements.


Taste		Has a great taste no bloating feeling , I take it before bedtime.


Taste		After trying 5 flavors or so, this is my favorite.
Taste		Hard to believe it doesn't have more carbs, it tastes that good.
Suppressed appetite		Keeps me feeling full to control appetite.


Fat loss		My goal is to lose about 20 lbs. and then start with the weights to sculpt the body.
Taste		P.S. Banana Cream has a great flavor.
Recovery ability		I recover quicker and have that edge to put more into my workout.
Endurance		After my Spin Class, I would feel fatigued for the next 24 to 36 hours.


Taste		Delicious!
Taste		The flavor is fantastic, tastes like real cookies and cream.
Mixes well		Mixes well (I have a blender ball shaker) with 6-8 oz of cold milk.


Taste		but I know it's going to be great taste is still awesome.


Texture		Makes a really thick shake.
Taste		but the taste is AWFUL!


Texture		That said, I rely almost exclusively on caseins for protein supplementation and have been pretty impressed with ON's flavors, textures and mixability.
Taste		That said, I rely almost exclusively on caseins for protein supplementation and have been pretty impressed with ON's flavors, textures and mixability.
Taste		I've had every flavor except banana and CNC.
Taste		I like them all, save for brownie batter, which has a strange chemical taste.
Taste		Raspberry is tasty
Taste		I like vanilla for its versatility, and it's a toss-up between Chocolate PB and this flavor for the number one spot.
Mixes well		That said, I rely almost exclusively on caseins for protein supplementation and have been pretty impressed with ON's flavors, textures and mixability.
Value for money		but I like using their casein to help offset the high price of Beverly's proteins.


Texture		also the taste of the chocolate fudge is amazing, i barely put water and it comes out thick, tasting like melted chocolate.
Taste		also the taste of the chocolate fudge is amazing, i barely put water and it comes out thick, tasting like melted chocolate.


Taste		I originally bought it because I like all chocolate peanut butter flavors in everything


Euphoria		but has little effect on your mood.
Texture		First there is Cellulose Gum which is used to thicken, stabilize and emulsify a product.
Texture		but they absolutely do not take away from the integrity of the product in the least.
Muscle gain		but it can be taken to provide energy and promote lean muscle mass (neither one of those statements has actually been proven).
Taste		Honestly the best flavor to try is the Blueberries & Cream flavor because there is no taste that could even compare.
Recovery ability		Lastly on this list we have Glutamine, which helps aid in muscle recovery, muscle growth, as well as in the treatment of serious illnesses, injury, trauma, burns and some cancer treatments.
Anti-catabolic		Serine is the precursor of many enzymes and can cause anti-catabolic effects on the body.
Endurance		The last ingredient under this blend is Alanine, which can prolong stamina and boost energy,
Physical energy		but it can be taken to provide energy and promote lean muscle mass (neither one of those statements has actually been proven).
Physical energy		The last ingredient under this blend is Alanine, which can prolong stamina and boost energy,
Ingredient profile		Here is a list of the ingredients below to explain why it is the best Casein product on the market today.
Ingredient profile		Now we’ve reached the end of the blends on the label and have reached the other ingredients which include Micellar Casein.
Ingredient profile		Next on the label is Acesulfame Potassium, which is a calorie free artificial sweetener.
Ingredient profile		On a scale of 1-10 I give this product a 9/10, and only because there are a few fillers included on this label that don’t seem to have a use,


Texture		It does have a chalky consistency,
Taste		This protein mixes well and tastes pretty good too.
Mixes well		This protein mixes well and tastes pretty good too.


Taste		Love this flavor of ON's Casein along with many of the other flavors.

Shakes	I have one of these shakes every night before bed and so does my husband.

100% Casein Protein (Optimum Nutrition)

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