# How do I know if this whey protein isolate is good?

**URL:** <https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273>\
**Category:** Nutrition Q&A \[Moderated\]\
**Created:** [August 26, 2021, 2:03pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273 "2021-08-26T14:03:40Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![eddiemun0503](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.barbellmedicine.com/eddiemun0503/32/731_2.png) [@eddiemun0503](https://forum.barbellmedicine.com/u/eddiemun0503)\
**Post date:** [August 26, 2021, 2:03pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273/1 "2021-08-26T14:03:40Z")

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Dear Dr. Feigenbaum,

I live in Germany, so unfortunately I can’t order your Whey RX here, so I’ve been relying on the local market for protein supplements.

The protein powder showed the amino acid profiles by 100g ratios, so I calculated the leucine, valine, and isoleucine contents per scoop (30g), which amounted to

2.88g leucine  
1.56 valine  
1.86 isoleucine.

It also says that the total protein amount per 30g (per scoop) is 25.2g protein. Is this a good protein supplement?

As for whether the product is CGMP certified, I am unsure as this is a German product. I’m not well versed in the manufacturing processes in Germany, but that aside, is the amino acid profile good enough?

Sincerely,

Eddie Mun

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**Author:** ![Jordan\_Feigenbaum](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.barbellmedicine.com/jordan_feigenbaum/32/1315_2.png) [@Jordan\_Feigenbaum](https://forum.barbellmedicine.com/u/Jordan_Feigenbaum)\
**Post date:** [August 26, 2021, 2:39pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273/2 "2021-08-26T14:39:36Z")

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I can’t speak to the amino acid profile, as it’s not listed here. The BCAA content does not raise any alarm bells. As I’ve mentioned in a number of places previously, I would make sure there’s no evidence of protein spiking (e.g. high glycine content, glutamine, creatine, etc.), has \< 120 Calories per serving, and is certified.

For the latter, I would look for cGMP certification (in Europe this may be EU-cGMP or WHO cGMP) and 3rd party testing like Informed Consent, NSF, etc.

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**Author:** ![Jordan\_Feigenbaum](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.barbellmedicine.com/jordan_feigenbaum/32/1315_2.png) [@Jordan\_Feigenbaum](https://forum.barbellmedicine.com/u/Jordan_Feigenbaum)\
**Post date:** [August 27, 2021, 3:47pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273/3 "2021-08-27T15:47:44Z")

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Any glutamine or creatine in a whey protein supplement is a red flag. Typical glycine content is like 1.15g per 100g whey. Anything significantly higher than that is also a red flag.

Eddie, I will not be reviewing the amino acid profile personally for you, as I think you’re capable of making this decision on your own.

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**Author:** ![Omar](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@Omar](https://forum.barbellmedicine.com/u/Omar)\
**Post date:** [August 27, 2021, 5:35pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273/4 "2021-08-27T17:35:43Z")

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Would you consider 1.6g per 100g of protein significantly higher?

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**Author:** ![eddiemun0503](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.barbellmedicine.com/eddiemun0503/32/731_2.png) [@eddiemun0503](https://forum.barbellmedicine.com/u/eddiemun0503)\
**Post date:** [August 27, 2021, 9:11pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273/5 "2021-08-27T21:11:55Z")

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Thank you, doc!

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**Author:** ![Jordan\_Feigenbaum](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.barbellmedicine.com/jordan_feigenbaum/32/1315_2.png) [@Jordan\_Feigenbaum](https://forum.barbellmedicine.com/u/Jordan_Feigenbaum)\
**Post date:** [August 28, 2021, 3:30pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273/6 "2021-08-28T15:30:07Z")

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> [@Omar](#):
>
> Would you consider 1.6g per 100g of protein significantly higher?

It’s not crazy high, but still no real reason for it.

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**Author:** ![Omar](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@Omar](https://forum.barbellmedicine.com/u/Omar)\
**Post date:** [August 28, 2021, 3:33pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273/7 "2021-08-28T15:33:22Z")

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Thanks for the info!

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**Author:** ![rayo77](https://avatars.discourse-cdn.com/v4/letter/r/ebca7d/32.png) [@rayo77](https://forum.barbellmedicine.com/u/rayo77)\
**Post date:** [August 31, 2021, 12:43pm UTC](https://forum.barbellmedicine.com/t/how-do-i-know-if-this-whey-protein-isolate-is-good/11273/8 "2021-08-31T12:43:02Z")

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Thanks for the info on the protein spiking – never knew dumping creatine in was a way cheap way to boost protein figs.