They Isolate I've been looking for
"Ingredients list is only what needs to be in there. Digests perfectly and the flavors are better than expected. Will be a regular customer"
Precision ISO 100% Whey Protein Isolate Powder, Pasture Fed, 27g Protein for Muscle Recovery, 1 to 2g Carbs, No Added Sugar, Third Party Tested
27g of pasture fed whey protein isolate per scoop, with just 1 to 2g of carbs and no added sugar.
- Pasture Fed
- Gluten Free
- No Added Sugar
★★★★★
I love that it has 4 ingredients and taste good not chalky or gritty. Low cal. Only protein powder I'll buy!
★★★★★
Been buying this product for over 4 years. Love the flavor and doesn't get you bloated like other brands.
★★★★★
Love this protein powder so much! It isn't chalky and doesn't leave clumps after mixing and shaking. The taste is good too!
Flavor
Size
- 27 grams of protein per scoop to support muscle recovery and lean muscle. In 49 trials with 1,863 adults who lifted weights, protein supplements improved strength and lean mass (Morton 2018).
- Supports muscle protein synthesis after training: 20g of whey isolate raised it 49% in 48 trained young men (Witard 2014).
- Fast absorbing, so it fits right before or after a workout: whey gave a sharp rise in blood amino acids after one meal and lifted protein synthesis 68% (Boirie 1997).
- Filtered to remove most of the lactose found in regular whey: isolate runs about 0.5% lactose, against 10 to 55% in whey concentrate (Hoffman 2004).
- Just 1 to 2 grams of carbs per scoop, with no added sugar, sweetened with stevia leaf extract.
- Third party tested for purity and potency.
Read more: Whey Isolate vs Whey Protein: What You Actually Pay Extra For
Mix 1 to 2 scoops with 8 to 16 oz of water. Have it before or after a workout, or any time you need to hit your protein for the day. It also works in smoothies and baking.
What is the difference between whey protein and whey protein isolate?
Isolate is whey that goes through extra filtering to take out most of the fat and most of the lactose. All whey starts as the protein left over when milk is made into cheese, and the protein itself doesn't change. You just get more protein and less of everything else, which is how a scoop of Precision ISO carries 27 grams of protein and only 1 to 2 grams of carbs.
Does whey protein isolate have lactose?
You get a little, but far less than in regular whey, because isolate is filtered to remove most of the lactose. Lactose is a carbohydrate, and a scoop of Precision ISO has just 1 to 2 grams of carbs in total, so there isn't much room for it. We say most, not all, so if lactose gives you real trouble, ask your doctor before you switch.
Can I take Precision ISO if I have a milk allergy?
If you have a milk allergy, Precision ISO isn't a fit, because whey is a milk protein. A milk allergy is a different thing from trouble digesting lactose, and filtering doesn't change that. The tub contains milk and soy (lecithin), and it's made in a facility that may also process egg, tree nuts, sesame, peanuts, fish and wheat.
What's in Precision ISO, and how is it sweetened?
You get four ingredients: pasture fed whey protein isolate, natural flavors, stevia leaf extract and salt, with small differences from flavor to flavor. It's sweetened with stevia leaf extract, a natural sweetener, so there are no artificial sweeteners in it. Precision ISO is also third party tested for purity and potency.
Can you cook or bake with whey protein isolate?
Yes, you can. Precision ISO works in smoothies and baking as well as in a shaker bottle. For a plain shake, mix 1 to 2 scoops with 8 to 16 ounces of water and drink it before or after a workout, or any time you need to hit your protein for the day.
Should I get Precision ISO or Precision Blend?
Get Precision ISO if you want 27 grams of protein with just 1 to 2 grams of carbs in a shake that digests fast, which makes it a good fit right before or after training. Pick Precision Blend if you'd rather have a shake that keeps you full for hours. It mixes in slower digesting proteins, so it works better between meals.
Does whey protein isolate have casein?
Whey protein isolate comes from whey, not casein, and you won't find casein in the Precision ISO ingredient list. Milk protein is about 80% casein and 20% whey. The two separate when milk is made into cheese: casein forms the curd and the whey drains off. If you want casein for slower digestion, Precision Blend adds micellar casein to the mix.
Is whey protein isolate gluten free?
Whey has no gluten of its own, but Precision ISO does not carry a gluten free label. Gluten comes from wheat, barley and rye, not milk, and the facility that makes Precision ISO may also process wheat. A US gluten free label means less than 20 parts per million of gluten, so if you have celiac disease, ask your doctor before you rely on a powder without one.
Can you take whey protein isolate every day?
Yes, you can take whey protein isolate every day as one source of protein in your diet. Each scoop of Precision ISO gives you 27 grams. The International Society of Sports Nutrition puts the daily total for active people at 1.4 to 2.0 grams of protein per kilogram of body weight, from food and shakes together. For a 170 pound person, that is about 108 to 154 grams a day. If you have kidney disease, ask your doctor how much protein is right for you.
Can whey protein isolate go bad?
Yes, it can, though a dry powder lasts a long time when you store it well. A USDA study found sealed whey protein concentrate kept for at least 18 months at normal temperatures but only about 9 months at 95 degrees. As it aged, the powder turned yellow and caked. Keep the lid tight, store the tub somewhere cool and dry, and always use a dry scoop.
Is whey protein isolate keto friendly?
Precision ISO fits easily into a keto or low carb day, with just 1 to 2 grams of carbohydrate per scoop depending on the flavor. A scoop of Vanilla has 27 grams of protein, 1 gram of carbs and 0 grams of fat. Stevia leaf extract sweetens it, and it has no added sugar.
- Pasture Fed
- Gluten Free
- No Added Sugar
★★★★★
I love that it has 4 ingredients and taste good not chalky or gritty. Low cal. Only protein powder I'll buy!
★★★★★
Been buying this product for over 4 years. Love the flavor and doesn't get you bloated like other brands.
★★★★★
Love this protein powder so much! It isn't chalky and doesn't leave clumps after mixing and shaking. The taste is good too!
Flavor
Size
- 27 grams of protein per scoop to support muscle recovery and lean muscle. In 49 trials with 1,863 adults who lifted weights, protein supplements improved strength and lean mass (Morton 2018).
- Supports muscle protein synthesis after training: 20g of whey isolate raised it 49% in 48 trained young men (Witard 2014).
- Fast absorbing, so it fits right before or after a workout: whey gave a sharp rise in blood amino acids after one meal and lifted protein synthesis 68% (Boirie 1997).
- Filtered to remove most of the lactose found in regular whey: isolate runs about 0.5% lactose, against 10 to 55% in whey concentrate (Hoffman 2004).
- Just 1 to 2 grams of carbs per scoop, with no added sugar, sweetened with stevia leaf extract.
- Third party tested for purity and potency.
Read more: Whey Isolate vs Whey Protein: What You Actually Pay Extra For
Mix 1 to 2 scoops with 8 to 16 oz of water. Have it before or after a workout, or any time you need to hit your protein for the day. It also works in smoothies and baking.
What is the difference between whey protein and whey protein isolate?
Isolate is whey that goes through extra filtering to take out most of the fat and most of the lactose. All whey starts as the protein left over when milk is made into cheese, and the protein itself doesn't change. You just get more protein and less of everything else, which is how a scoop of Precision ISO carries 27 grams of protein and only 1 to 2 grams of carbs.
Does whey protein isolate have lactose?
You get a little, but far less than in regular whey, because isolate is filtered to remove most of the lactose. Lactose is a carbohydrate, and a scoop of Precision ISO has just 1 to 2 grams of carbs in total, so there isn't much room for it. We say most, not all, so if lactose gives you real trouble, ask your doctor before you switch.
Can I take Precision ISO if I have a milk allergy?
If you have a milk allergy, Precision ISO isn't a fit, because whey is a milk protein. A milk allergy is a different thing from trouble digesting lactose, and filtering doesn't change that. The tub contains milk and soy (lecithin), and it's made in a facility that may also process egg, tree nuts, sesame, peanuts, fish and wheat.
What's in Precision ISO, and how is it sweetened?
You get four ingredients: pasture fed whey protein isolate, natural flavors, stevia leaf extract and salt, with small differences from flavor to flavor. It's sweetened with stevia leaf extract, a natural sweetener, so there are no artificial sweeteners in it. Precision ISO is also third party tested for purity and potency.
Can you cook or bake with whey protein isolate?
Yes, you can. Precision ISO works in smoothies and baking as well as in a shaker bottle. For a plain shake, mix 1 to 2 scoops with 8 to 16 ounces of water and drink it before or after a workout, or any time you need to hit your protein for the day.
Should I get Precision ISO or Precision Blend?
Get Precision ISO if you want 27 grams of protein with just 1 to 2 grams of carbs in a shake that digests fast, which makes it a good fit right before or after training. Pick Precision Blend if you'd rather have a shake that keeps you full for hours. It mixes in slower digesting proteins, so it works better between meals.
Does whey protein isolate have casein?
Whey protein isolate comes from whey, not casein, and you won't find casein in the Precision ISO ingredient list. Milk protein is about 80% casein and 20% whey. The two separate when milk is made into cheese: casein forms the curd and the whey drains off. If you want casein for slower digestion, Precision Blend adds micellar casein to the mix.
Is whey protein isolate gluten free?
Whey has no gluten of its own, but Precision ISO does not carry a gluten free label. Gluten comes from wheat, barley and rye, not milk, and the facility that makes Precision ISO may also process wheat. A US gluten free label means less than 20 parts per million of gluten, so if you have celiac disease, ask your doctor before you rely on a powder without one.
Can you take whey protein isolate every day?
Yes, you can take whey protein isolate every day as one source of protein in your diet. Each scoop of Precision ISO gives you 27 grams. The International Society of Sports Nutrition puts the daily total for active people at 1.4 to 2.0 grams of protein per kilogram of body weight, from food and shakes together. For a 170 pound person, that is about 108 to 154 grams a day. If you have kidney disease, ask your doctor how much protein is right for you.
Can whey protein isolate go bad?
Yes, it can, though a dry powder lasts a long time when you store it well. A USDA study found sealed whey protein concentrate kept for at least 18 months at normal temperatures but only about 9 months at 95 degrees. As it aged, the powder turned yellow and caked. Keep the lid tight, store the tub somewhere cool and dry, and always use a dry scoop.
Is whey protein isolate keto friendly?
Precision ISO fits easily into a keto or low carb day, with just 1 to 2 grams of carbohydrate per scoop depending on the flavor. A scoop of Vanilla has 27 grams of protein, 1 gram of carbs and 0 grams of fat. Stevia leaf extract sweetens it, and it has no added sugar.
27 grams of protein. 1 to 2 grams of carbs. Four ingredients.
Precision ISO is a pasture fed whey protein isolate powder, filtered to strip out most of the fat and lactose. Each scoop gives you 27g of protein with no added sugar, sweetened with stevia leaf extract and third party tested for purity and potency.
Precision ISO at a glance
| Protein per scoop | 27g |
|---|---|
| Carbs per scoop | 1 to 2g, depending on flavor |
| Fat per scoop | 0g in Vanilla, may vary slightly by flavor |
| Added sugar | None |
| Sweetener | Stevia leaf extract |
| Protein source | Pasture fed whey protein isolate |
| Ingredients | Pasture fed whey protein isolate, natural flavors, stevia leaf extract, salt (may vary slightly by flavor) |
| Tub sizes | 1.5lb and 4lb |
| How to mix | 1 to 2 scoops in 8 to 16 oz of water |
| Testing | Third party tested for purity and potency |
How much protein is in a scoop of Precision ISO?
One scoop of Precision ISO gives you 27 grams of protein. Two scoops, the top of the label range, give you 54 grams.
That lines up with the research on a single serving. In a 2014 trial in the American Journal of Clinical Nutrition, 48 trained young men drank 0, 10, 20 or 40 grams of whey isolate after leg training. Twenty grams raised muscle protein synthesis by 49% and 40 grams by 56%.
Your daily total matters more than any one shake. The International Society of Sports Nutrition puts most exercising people at 1.4 to 2.0 grams of protein per kilogram a day. For a 170 pound adult, that is about 108 to 154 grams, so one scoop covers a fifth to a quarter of it.
Wondering how many scoops fit in your day? Read how many protein shakes a day you can have.
Whey protein isolate benefits, study by study
You should be able to see what the research found, so each row is one published study or position stand, with what it measured and the amount behind it.
| Benefit | What the research measured | Amount | Source |
|---|---|---|---|
| Strength and lean muscle | 49 trials, 1,863 adults who lifted weights: protein supplements improved strength and lean mass, with gains leveling off past about 1.62g per kg a day | Total daily protein | Morton 2018, British Journal of Sports Medicine |
| Muscle repair after training | Muscle protein synthesis up 49% with 20g and 56% with 40g, 48 trained young men | 20 or 40g whey isolate after exercise | Witard 2014, American Journal of Clinical Nutrition |
| Fast digestion | A sharp, short rise in blood amino acids, with whole body protein synthesis up 68% after one meal | One whey meal | Boirie 1997, Proceedings of the National Academy of Sciences |
| Daily protein for active people | Position stand: most exercising people do well on 1.4 to 2.0g per kg a day | Daily total | Jager 2017, Journal of the International Society of Sports Nutrition |
| Easier on lactose | Systematic review: most adults with lactose intolerance handle 12 to 15g of lactose, about a cup of milk | Up to 12 to 15g lactose | Shaukat 2010, Annals of Internal Medicine |
Read the studies: Morton 2018, Witard 2014, Boirie 1997, Jager 2017, Shaukat 2010.
Whey protein isolate vs whey protein concentrate
If you are choosing between the two, both come from the same milk protein. The difference is how far the whey is filtered.
Concentrate is filtered less, so it keeps more of the fat and lactose. Isolate is filtered further, which leaves 90% protein or more, as a 2004 review in the Journal of Sports Science and Medicine lays out.
The protein that builds muscle is the same. What changes is how much fat and lactose come along with each gram. See the full breakdown in whey isolate vs whey protein.
| Measure | Whey protein isolate | Whey protein concentrate |
|---|---|---|
| Protein | 90% or more | 25 to 89% |
| Lactose | About 0.5% | 10 to 55% |
| Fat | About 0.5% | 2 to 10% |
| Fits best if | You track carbs and fat, or regular whey upsets your stomach | Price per tub is your first concern |
Composition ranges from Hoffman and Falvo 2004, Journal of Sports Science and Medicine, Table 2. They describe the whey ingredient, not a flavored scoop. Shop every isolate protein powder we carry.
Whey isolate vs casein
If you want a shake that lasts longer, casein is the other half of milk protein. Milk protein is about 80% casein and 20% whey. When milk is made into cheese, casein forms the curd and the whey drains off.
The two digest at very different speeds. In a 1997 study in the Proceedings of the National Academy of Sciences, whey caused a sharp, short rise in blood amino acids. Casein gave a moderate rise that lasted for hours, probably because it leaves the stomach slowly.
That makes whey isolate the pick around a workout and casein the pick for a long stretch without food. Precision ISO is 100% whey protein isolate. If you want both speeds in one scoop, Precision Blend adds micellar casein.
| Measure | Whey isolate | Casein |
|---|---|---|
| Digestion | Fast | Slow |
| Blood amino acids after a meal | Sharp, short rise | Moderate rise that lasts for hours |
| Whole body protein synthesis after one meal | Up 68% | Up 31% |
| Best time | Right before or after training | Between meals |
Figures from Boirie 1997, Proceedings of the National Academy of Sciences, one meal in healthy adults.
What pasture fed whey isolate means
If you see pasture fed on a tub, it describes how the cows behind the milk are raised, with time out on pasture.
Whey isolate is a complete protein with all nine essential amino acids, as a 2015 review in the Journal of Food Science describes. Precision ISO is made from pasture fed whey protein isolate.
How whey protein isolate is made
- 1
Cheese making splits the milk
Casein forms the curd and the whey drains off as a liquid. All whey starts here.
- 2
Filtering concentrates the protein
Extra filtering strips out most of the fat and most of the lactose. What is left is isolate, 90% protein or more.
- 3
Into your scoop
Precision ISO adds natural flavors, stevia leaf extract and salt, with no added sugar. It is third party tested for purity and potency.
When to take whey protein isolate
You can take it whenever you need protein. Mix 1 to 2 scoops with 8 to 16 oz of water. Have it before or after a workout, or any time you need to hit your protein for the day. It also works in smoothies and baking.
Right after training is where the research sits. In the 2014 whey isolate trial, the men drank their shake about 10 minutes after leg training. Whey digests fast, so it fits right before a session too.
Spreading protein across the day helps more than one big shake. A 2018 review in the Journal of the International Society of Sports Nutrition suggests about 0.4 grams per kilogram per meal, across at least four meals a day.
3 reasons to take Precision ISO
27 grams in one scoop
27 grams of protein per scoop to support muscle recovery and lean muscle. Two scoops give you 54 grams.
Low carb, no added sugar
Just 1 to 2 grams of carbs per scoop, sweetened with stevia leaf extract. It fits easily into a keto or low carb day.
A short, tested label
Pasture fed whey protein isolate, natural flavors, stevia leaf extract and salt. Third party tested for purity and potency.
Overall rating: 4.8469057 / 5 from 307 reviews.
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Review highlights
Reviews
Really Good
"Not a fan of chalky powders. This one tastes really good. Can drink it alone or in coffee. Good product."
Taste great!
"I love the flavor! It dissolves fairly well, I do wish it didn’t foam as much but over all I love the powder!"
Tasty and natural ingredients
"Love this protein powder blends well in smoothies and tastes so good. Also great to stir into Greek yogurt or overnight oats for added protein."
Amazing!
"Precision ISO Protein Whey Protein Isolate is an tip tier brand. My body can feel the positive effects and my taste buds appricate the taste. Other whey power brands are disgusting, but this brand is superior in flavor. I got the vanilla whey powder and I will be trying the chocolate next!"
Vanilla
"The Vanilla was ok. I prefer the peanut cookie butter."
Very Tasty!
"I have been ordering this protein for the past few months to blend with my morning smoothie. It is absolutely one of the best proteins I've ever had the pleasure of trying!"
Love it!
"Good protein powder overall. Mixes well, tastes better than expected, and doesn’t leave a chalky texture. I’ve been using it consistently after workouts and it helps keep me full. Would definitely buy again."
Mexican Hot Chocolate
"Not a big fan of the taste it was really grainy and thickened my Greek yogurt up"
Love it!
"Super great brand of protein, the chocolate peanut butter is so yummy."