Syntrax Matrix Sustained-Release Protein Blend 2 lb
- Sustained-release blend: whey, micellar casein, egg white
- Zero sugar, low carbohydrate
- Grass-fed, rBST-free whey, ultrafiltered
- Glutamine peptides added
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A slow-digesting protein blend for lifters who want amino acids spread over hours, such as before bed or between long meal gaps. It contains milk and egg protein, so it does not suit dairy or egg allergies.
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ASIN: B00HD6AURWCategory: Whey Protein Powders
Overview
Mixing this blend before bed or between meals gives a slow, steady protein release, because Syntrax combines fast whey with slower micellar casein and egg white. Glutamine peptides round out the amino acid profile, with zero sugar and few carbs.
Pairing fast and slow proteins gives a longer amino acid supply than whey alone, which suits a nighttime shake. The formula is sugar free and low in carbs. Protein per serving and calories are not given in the listing, so comparing it means reading the tub.
Who it's for
Strength athletes who go long stretches between meals or train late can use the casein and egg blend to cover the night. People avoiding dairy or eggs need a plant protein.
Pros and cons
- Fast and slow proteins combined
- Zero sugar, low carb
- Grass-fed, rBST-free whey
- Glutamine peptides included
- Protein per serving not listed
- Contains milk and egg
- Calories not stated
Performance notes
Whey digests quickly while micellar casein and egg white release amino acids more slowly, which spreads protein delivery over hours. Casein thickens shakes, so more liquid gives a thinner drink. Sugar free sweetening holds carbohydrate intake down.
Specifications
| Brand | Syntrax |
|---|---|
| Protein Source | Whey, micellar casein, egg white |
| Flavor | Simply Vanilla |
| Release type | Sustained release |
| Carbohydrates | Low carb |
| Sugar | Zero sugar |
| Whey type | Grass-fed, rBST-free, ultrafiltered |
| Added ingredients | Glutamine peptides |
Frequently asked questions
Can I take Syntrax Matrix if I am lactose intolerant?
It contains whey and micellar casein, both milk proteins. The listing makes no lactose free claim, so check with a doctor if you are sensitive.
Is Syntrax Matrix a pure whey protein?
No. It blends ultrafiltered whey with micellar casein, egg white protein and glutamine peptides.
Does Syntrax Matrix have sugar?
The listing says zero sugar and low carbohydrate content.
When should I drink a sustained-release protein?
The blend is built to release amino acids over time, which is why it is often taken between meals or before sleep.