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What's Your Fitness Goal?

NOW Foods Whey Protein Isolate, 100% Pure 5Lb (Packaging May Vary)

from Now Foods
4.5 out of 5 stars 1,822 customer reviews
| 162 answered questions
About the Product
  • 100% Pure - Mixes Instantly - Microfiltered
  • High in Branch Chain Amino Acids
  • Natural Unflavored - All Natural - No Aspartame, No Sucralose, No Acesulfame-K

Frequently Bought Together

  • NOW Foods Whey Protein Isolate, 100% Pure 5Lb (Packaging May Vary)
  • +
  • Amazing Grass Green SuperFood Original, 30 Servings, 8.5 Ounces
  • +
  • Healthworks Raw Certified Organic Cacao Powder, 1 lb
Total price: $90.23
Buy the selected items together


Product Description

Flavor: Unflavored | Size: 5 lbs

NOW® Whey Protein Isolate is a high quality protein supplement that is both bioavailable and easily digested. Whey protein contains a high concentration of Branched Chain Amino Acids (BCAA's), which are important for efficient muscle metabolism.* These qualities make NOW® Whey Protein Isolate an ideal supplement for active individuals. Whey protein is considered to have the highest Biological Value of any protein source - superior in essential amino acid content to beef, milk, casein or soy. Since 1968, NOW® has earned a valued reputation for producing quality products at reasonable prices. Our Quality Assurance and Quality Control teams of certified nutritionists, chemists and technicians thoroughly evaluate all products, processes, packaging and sources. Our responsiblity and pledge is to honestly and accurately label quality products that are fresh, potent and effective.

Product Details

Flavor: Unflavored | Size: 5 lbs
  • Product Dimensions: 6 x 5 x 4 inches ; 5 pounds
  • Shipping Weight: 5.8 pounds (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B0015AQL1Q
  • UPC: 733739021748
  • California residents: Click here for Proposition 65 warning.
  • Item model number: 733739021748
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (1,822 customer reviews)
  • Amazon Best Sellers Rank: #409 in Health & Personal Care (See Top 100 in Health & Personal Care)

Important Information

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Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By L. Cox on August 12, 2008
I'm a personal trainer, nutritionist, and former bodybuilder. The pure unflavored whey protein isolate is definitely the best protein powder you can find. There are many health benefits to using whey protein, but with all of the artificial sweeteners and additives in most powders, those health benefits are ruined. Insulin sensitivity is a major factor when it comes to burning fat and building muscle. Lack of insulin sensitivity is the reason for sugar cravings and getting the shakes when you don't have your Coke or Pepsi everyday. Whey protein is proven to improve insulin sensitivity more than any other protein source, but common additives like Acesulfame and Aspartame cause insulin secretion much like sugar, and that diminishes the whey's ability to increase insulin sensitivity. The key to burning fat 24 hours a day is to keep your insulin in a low to moderate range, and avoiding spikes.

As for guys trying to build big muscles, insulin and growth hormone are very important for building muscle, but when one increases the other decreases. That's why professional bodybuilders use both insulin and HGH at the same so they can get the best of both worlds. Unless you want to pay $2,000 a month for prescription HGH and insulin, your best bet is to keep your insulin in a low to moderate range so you can gradually build solid permanent muscle while gradually lowering your body fat at the same time. Having a high carbohydrate protein shake immediately after your workouts do help build muscle by filling your muscles with glucose, and that's fine if you're going for the modern Ronnie Coleman look. The low sugar/insulin diet is best if you're going for the lean old school Scharzenegger look.
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Flavor Name: UnflavoredSize: 5 lbs Verified Purchase
A lot of the criticism levied against this product on here is unfounded. Is this powder the greatest thing ever? No. However much of the 'negatives' reflect customers who should not have purchased this product to begin with. I will attempt to explain why.

First off, people say that it is "too foamy" when blended. Well, maybe you should buy a protein powder with a chemical in it to inhibit foaming.
Second off, people say that it does not taste good. Well, maybe you should buy a protein powder with a chemical in it to taste like some artificial flavor.

This product has 2 ingredients in it, which is why I bought it. I think it's digusting how long the list is on a lot of the boutique powders, and if you ask a sales rep. what they do, they can only give you the company line- which is 90% of the time not even remotely medically accurate. It's basically cutting the stuff need to make more money. So, first ingredient here is Microfiltered Whey Protein. That's what you want, warts and all. Flavor, color, texture- if you wanted WPI- then deal with it. Second ingredient is Soy Lechithin which is less than 1% of the product (it says so on the packaging). That's for (brace yourself, big word coming up) emulsification. In other words, it keeps powder, well, powdery. It basically prevents the whey (milk product) from caking up or breaking down. It's basically in everything you eat.

Sorry to disappoint you that there isn't any more to talk about. Honestly, you can look up whey protein isolate on wikipedia- what it does, what it does not do. Try doing the same with all the rat poison ingredients in other stuff, and then write a review praising how good it is for you.
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14 Comments 389 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Flavor Name: UnflavoredSize: 5 lbs Verified Purchase
tl;dr: it's lead, and it's nothing.

I've been using this powder for years. My latest shipment, for the first time, had a sticker on it that says "California Residents Proposition 65 WARNING: This product contains a substance known to the State of California to cause birth defects or other reproductive harm." Even though birth defects are not an issue for me (I'm male, and I'm also not planning on having kids), it drove me crazy that they didn't say what substance the warning was for. I also failed to find the answer anywhere online. (NOW Foods does have a "California Residents Proposition 65 Warning FAQs" page, but it doesn't specifically cover this product.)

I asked a question on the Amazon product page, but just got the usual collection of replies from people who don't understand that you're NOT SUPPOSED TO ANSWER IF YOU DON'T KNOW. Sheesh.

So finally I figured out that I could contact NOW Foods directly (they have a question submission form on their web site), so I did that. They answered the following day. Here's their response:

"The warning is based on legal settlements with attorneys that proposed the Prop 65 regulation for the State of California that mandates even low lead levels found naturally in the Whey protein be stickered. See our site on Prop 65 info: [link to the FAQ I mentioned above]".

So there you have it. California requires this label if there's a chance of more than 0.5 micrograms per day of lead in a product (I assume for this product they figure people will have one or two servings per day). Obviously it's still under the federal legal limit. The federal regulations seem to be a bit complicated, but for example, they seem to allow up to 15 micrograms per liter in drinking water. They allow 0.
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