NutraBio Signature Protein — 25g Milk, Casein and Egg Blend, Zero Sugar

Roll over image to zoom in Click on image to zoom

NutraBio Signature Protein — 25g Milk, Casein and Egg Blend, Zero Sugar

NutraBio Signature Protein25 grams of protein from three fully disclosed sources: 8.7g milk protein isolate, 8.2g micellar casein and 8.1g egg white protein. 130 calories, 3g of carbohydrate, 2g of fat and zero sugar per scoop.What this protein actually is: a slow blend, not a wheyThe label lists three sources in near-equal amounts. One extra step of arithmetic tells you how the shake behaves once you drink it, and it is the most useful thing on this page.Milk protein isolate is milk protein filtered as a whole. It keeps milk's natural ratio of roughly 80% casein to 20% whey. Apply that to the 8.7g in this formula and the real picture looks like this: Casein (micellar casein plus the casein in the milk isolate) ~15g About 60% of the protein. Slow. Egg white 8.1g About 32%. Medium. Whey (the whey fraction of the milk isolate) ~1.7g About 7%. Fast. Signature Protein is a sustained-release protein with a small fast fraction on top. That is a different tool from a whey isolate, and it is the reason to buy it or to skip it. The split above is our arithmetic from the typical composition of milk protein isolate, not a figure printed on the tub.How each source works Micellar casein (8.2g). Casein clots when it meets stomach acid and forms a soft gel. That gel leaves the stomach slowly, so amino acids reach the bloodstream as a steady supply over several hours instead of a single spike. Micellar casein is the intact form, as opposed to cheaper caseinates. Milk protein isolate (8.7g). Casein and whey together in the ratio milk makes them. The small whey portion arrives first, the casein portion follows. Egg white protein (8.1g). Digests at a pace between whey and casein. It is naturally lactose free, sits at the top of the protein quality scale (a PDCAAS of 1.0) and brings a different amino acid balance from dairy, with more of the sulfur amino acids.All three are complete proteins, so the blend supplies all nine essential amino acids.The honest read on leucineLeucine is the amino acid that switches on muscle protein synthesis, and roughly 2 to 3 grams per meal is the commonly cited target. Whey is the richest source at around 11% leucine. Casein and egg white sit closer to 8 to 9%.By our estimate, one scoop of Signature Protein delivers about 2.2 to 2.4g of leucine, against roughly 2.7g from 25g of whey isolate. That is inside the target range, but it is lower than whey, and it arrives more gradually. The label does not print an amino acid profile, so treat this as an estimate from typical values for each source.For most people this difference is small. Total daily protein drives results far more than the speed of any single shake.The enzyme complex, and what it does not doEach scoop includes a 250mg digestive enzyme complex of protease and lactase. Lactase splits lactose into simple sugars your gut can absorb. Milk protein isolate and casein carry small amounts of residual lactose, so this is the more useful of the two if dairy shakes tend to leave you bloated. Protease begins breaking protein into smaller peptides. A healthy digestive system already does this well, so expect a modest benefit at most.Enzymes do nothing for a milk or egg allergy. An allergy is an immune reaction to the proteins themselves, and this product is made of exactly those proteins.Why one scoop carries 30% of your daily calciumCasein micelles are held together by calcium phosphate, so calcium travels with the protein instead of being added afterward. A casein-heavy blend is naturally calcium-rich, which is useful if your diet is light on dairy.Specs Protein25g (8.7g milk protein isolate, 8.2g micellar casein, 8.1g egg white) Calories130 Carbohydrate3g Sugar0g Fat2g Calcium30% of daily value Enzymes250mg protease and lactase complex Sizes2lb (about 26 servings) and 5lb FlavorsChocolate Milkshake, Creamy Vanilla, Cookies & Cream, Banana Creme LabelFully disclosed, no proprietary blends TestingEvery lot third-party tested, results at checkmysupps.com CertificationKosher and halal AllergensMilk, eggWhy the disclosed split matters on a blend. Most protein blends list their sources without amounts, which lets a formula lead with the expensive ingredient on the label and the cheap one in the tub. NutraBio prints the grams from each source and publishes lab results by lot number at checkmysupps.com.How it compares NutraBio Signature Protein 25g / 130 cal Slow-release blend. Between meals, daytime, before bed NutraBio 100% Whey Isolate 25g / 120 cal Fast and leanest. Zero fat, most leucine per scoop NutraBio Clear Whey Isolate 20g / 80 cal Drinks like fruit juice, not a shake NutraBio Extreme Mass 53g / 660 cal For adding calories, not replacing a protein shake Signature Protein is the pick when the shake has to hold you for hours. Whey isolate is the pick when the goal is the most protein and leucine for the fewest calories.How to use it One scoop in 6 to 8oz of cold water. Casein thickens as it sits, so add liquid if you want it thinner. Between meals. This is where a slow blend earns its place. It digests over hours and tends to be more filling than whey. Before bed. The pre-sleep protein studies used around 40g of casein. One scoop supplies about 15g of casein inside 25g of total protein, so count it as a solid contribution, not a copy of the research dose. After training. It works. A fast whey has a slight edge on leucine and speed, but hitting your daily protein total matters more. In food. Casein blends thicken well, so this stirs into oats or Greek yogurt and makes a decent protein pudding with less liquid.Who this is for Anyone who wants one protein for all day instead of only the post-workout window People who find whey leaves them hungry again within the hour Anyone looking for a before-bed protein without buying a separate casein Adults focused on holding on to muscle with age, where steady daily protein matters most People who want part of their protein from a non-dairy source, with egg white as about a third of the blend Anyone who wants to see the grams from every source and check the lab resultsWho this is not forIf you have a milk or egg allergy, this is not suitable. Our plant proteins are the alternative.If you want the fastest, leanest post-workout shake, NutraBio 100% Whey Isolate has more leucine, zero fat and fewer calories.If you are strongly lactose intolerant, the added lactase helps, but a casein-heavy blend carries more lactose than a whey isolate. Start with a half scoop.If you are vegan, every source here is animal-derived.Stack it with: creatine, which mixes into a shake without changing the taste.Frequently asked questionsHow much protein is in NutraBio Signature Protein?25g per scoop at 130 calories: 8.7g from milk protein isolate, 8.2g from micellar casein and 8.1g from egg white, with zero sugar.Is Signature Protein a whey protein?No. It contains a small amount of whey as part of the milk protein isolate, but around 60% of the protein is casein and about a third is egg white. It digests far more slowly than a whey.What is the difference between Signature Protein and whey isolate?Speed and leanness. Whey isolate digests quickly, has more leucine and no fat. Signature Protein releases amino acids over several hours and is more filling. Whey suits the post-workout window, Signature suits the rest of the day.Can I take it before bed?Yes. The casein content makes it a good fit, since it digests slowly overnight. One scoop gives about 15g of casein, which is below the 40g used in most pre-sleep studies.Can I use it after a workout?Yes. Whey is slightly better suited to that window, but total daily protein matters far more than timing.Is it easy on the stomach?It includes 250mg of protease and lactase, and the lactase helps with the small amount of lactose present. It will not help with a milk or egg allergy.What is milk protein isolate?Milk protein filtered to remove most of the fat and lactose while keeping casein and whey in their natural ratio of about 80 to 20.Is it third-party tested?Yes. Every lot is independently lab tested, and you can look up the results for your tub by lot number at checkmysupps.com.Where can I buy NutraBio Signature Protein near Philadelphia?At Coalition Nutrition, 2026 E Old Lincoln Hwy in Langhorne, PA, or online here. Come in and we will tell you plainly whether this or a whey fits what you are doing. Read more

Authorized Dealer NutraBio

Size: 5lb

Flavor: Creamy Vanilla

Variant

Price:

$ 99.99

Quantity:

Every Day Low Pricing Available In Store

Authorized Retailer

Fast Shipping

Real Support If You Need It

PRODUCT LABEL

NutraBio Signature Protein

25 grams of protein from three fully disclosed sources: 8.7g milk protein isolate, 8.2g micellar casein and 8.1g egg white protein. 130 calories, 3g of carbohydrate, 2g of fat and zero sugar per scoop.

What this protein actually is: a slow blend, not a whey

The label lists three sources in near-equal amounts. One extra step of arithmetic tells you how the shake behaves once you drink it, and it is the most useful thing on this page.

Milk protein isolate is milk protein filtered as a whole. It keeps milk's natural ratio of roughly 80% casein to 20% whey. Apply that to the 8.7g in this formula and the real picture looks like this:

Casein (micellar casein plus the casein in the milk isolate)	~15g	About 60% of the protein. Slow.
Egg white	8.1g	About 32%. Medium.
Whey (the whey fraction of the milk isolate)	~1.7g	About 7%. Fast.

Signature Protein is a sustained-release protein with a small fast fraction on top. That is a different tool from a whey isolate, and it is the reason to buy it or to skip it. The split above is our arithmetic from the typical composition of milk protein isolate, not a figure printed on the tub.

How each source works

Micellar casein (8.2g). Casein clots when it meets stomach acid and forms a soft gel. That gel leaves the stomach slowly, so amino acids reach the bloodstream as a steady supply over several hours instead of a single spike. Micellar casein is the intact form, as opposed to cheaper caseinates.
Milk protein isolate (8.7g). Casein and whey together in the ratio milk makes them. The small whey portion arrives first, the casein portion follows.
Egg white protein (8.1g). Digests at a pace between whey and casein. It is naturally lactose free, sits at the top of the protein quality scale (a PDCAAS of 1.0) and brings a different amino acid balance from dairy, with more of the sulfur amino acids.

All three are complete proteins, so the blend supplies all nine essential amino acids.

The honest read on leucine

Leucine is the amino acid that switches on muscle protein synthesis, and roughly 2 to 3 grams per meal is the commonly cited target. Whey is the richest source at around 11% leucine. Casein and egg white sit closer to 8 to 9%.

By our estimate, one scoop of Signature Protein delivers about 2.2 to 2.4g of leucine, against roughly 2.7g from 25g of whey isolate. That is inside the target range, but it is lower than whey, and it arrives more gradually. The label does not print an amino acid profile, so treat this as an estimate from typical values for each source.

For most people this difference is small. Total daily protein drives results far more than the speed of any single shake.

The enzyme complex, and what it does not do

Each scoop includes a 250mg digestive enzyme complex of protease and lactase.

Lactase splits lactose into simple sugars your gut can absorb. Milk protein isolate and casein carry small amounts of residual lactose, so this is the more useful of the two if dairy shakes tend to leave you bloated.
Protease begins breaking protein into smaller peptides. A healthy digestive system already does this well, so expect a modest benefit at most.

Enzymes do nothing for a milk or egg allergy. An allergy is an immune reaction to the proteins themselves, and this product is made of exactly those proteins.

Why one scoop carries 30% of your daily calcium

Casein micelles are held together by calcium phosphate, so calcium travels with the protein instead of being added afterward. A casein-heavy blend is naturally calcium-rich, which is useful if your diet is light on dairy.

Specs

Protein	25g (8.7g milk protein isolate, 8.2g micellar casein, 8.1g egg white)
Calories	130
Carbohydrate	3g
Sugar	0g
Fat	2g
Calcium	30% of daily value
Enzymes	250mg protease and lactase complex
Sizes	2lb (about 26 servings) and 5lb
Flavors	Chocolate Milkshake, Creamy Vanilla, Cookies & Cream, Banana Creme
Label	Fully disclosed, no proprietary blends
Testing	Every lot third-party tested, results at checkmysupps.com
Certification	Kosher and halal
Allergens	Milk, egg

Why the disclosed split matters on a blend. Most protein blends list their sources without amounts, which lets a formula lead with the expensive ingredient on the label and the cheap one in the tub. NutraBio prints the grams from each source and publishes lab results by lot number at checkmysupps.com.

How it compares

NutraBio Signature Protein	25g / 130 cal	Slow-release blend. Between meals, daytime, before bed
NutraBio 100% Whey Isolate	25g / 120 cal	Fast and leanest. Zero fat, most leucine per scoop
NutraBio Clear Whey Isolate	20g / 80 cal	Drinks like fruit juice, not a shake
NutraBio Extreme Mass	53g / 660 cal	For adding calories, not replacing a protein shake

Signature Protein is the pick when the shake has to hold you for hours. Whey isolate is the pick when the goal is the most protein and leucine for the fewest calories.

How to use it

One scoop in 6 to 8oz of cold water. Casein thickens as it sits, so add liquid if you want it thinner.
Between meals. This is where a slow blend earns its place. It digests over hours and tends to be more filling than whey.
Before bed. The pre-sleep protein studies used around 40g of casein. One scoop supplies about 15g of casein inside 25g of total protein, so count it as a solid contribution, not a copy of the research dose.
After training. It works. A fast whey has a slight edge on leucine and speed, but hitting your daily protein total matters more.
In food. Casein blends thicken well, so this stirs into oats or Greek yogurt and makes a decent protein pudding with less liquid.

Who this is for

Anyone who wants one protein for all day instead of only the post-workout window
People who find whey leaves them hungry again within the hour
Anyone looking for a before-bed protein without buying a separate casein
Adults focused on holding on to muscle with age, where steady daily protein matters most
People who want part of their protein from a non-dairy source, with egg white as about a third of the blend
Anyone who wants to see the grams from every source and check the lab results

Who this is not for

If you have a milk or egg allergy, this is not suitable. Our plant proteins are the alternative.

If you want the fastest, leanest post-workout shake, NutraBio 100% Whey Isolate has more leucine, zero fat and fewer calories.

If you are strongly lactose intolerant, the added lactase helps, but a casein-heavy blend carries more lactose than a whey isolate. Start with a half scoop.

If you are vegan, every source here is animal-derived.

Stack it with: creatine, which mixes into a shake without changing the taste.

Frequently asked questions

How much protein is in NutraBio Signature Protein?
25g per scoop at 130 calories: 8.7g from milk protein isolate, 8.2g from micellar casein and 8.1g from egg white, with zero sugar.

Is Signature Protein a whey protein?
No. It contains a small amount of whey as part of the milk protein isolate, but around 60% of the protein is casein and about a third is egg white. It digests far more slowly than a whey.

What is the difference between Signature Protein and whey isolate?
Speed and leanness. Whey isolate digests quickly, has more leucine and no fat. Signature Protein releases amino acids over several hours and is more filling. Whey suits the post-workout window, Signature suits the rest of the day.

Can I take it before bed?
Yes. The casein content makes it a good fit, since it digests slowly overnight. One scoop gives about 15g of casein, which is below the 40g used in most pre-sleep studies.

Can I use it after a workout?
Yes. Whey is slightly better suited to that window, but total daily protein matters far more than timing.

Is it easy on the stomach?
It includes 250mg of protease and lactase, and the lactase helps with the small amount of lactose present. It will not help with a milk or egg allergy.

What is milk protein isolate?
Milk protein filtered to remove most of the fat and lactose while keeping casein and whey in their natural ratio of about 80 to 20.

Is it third-party tested?
Yes. Every lot is independently lab tested, and you can look up the results for your tub by lot number at checkmysupps.com.

Where can I buy NutraBio Signature Protein near Philadelphia?
At Coalition Nutrition, 2026 E Old Lincoln Hwy in Langhorne, PA, or online here. Come in and we will tell you plainly whether this or a whey fits what you are doing.