When it comes to protein powders, the market is flooded with options, from pure whey isolates to plant-based alternatives. One product that’s been making waves is International Protein Synergy, a multi-protein blend that claims to offer sustained-release protein absorption. As someone who’s always on the lookout for high-quality supplements that align with both performance and recovery, I decided to put this product to the test for four weeks.
Since I specialise in helping skinny-fat guys transform their physiques, I wanted to see if this protein blend could be a good fit for building muscle while staying lean. I also very rarely ever go for strawberry-flavoured protein powders, but I have to say—this is the best-tasting strawberry protein I have ever had in my life! I also should mention that I’m not paid or sponsored by International Protein.
What is International Protein Synergy?
International Protein Synergy is a 6-matrix protein blend designed to deliver a steady release of amino acids over time. Unlike single-source whey isolates that absorb quickly, this blend contains a mix of fast, medium, and slow-digesting proteins, making it ideal for prolonged muscle recovery. The flavour I tested was Strawberry, and I’ll get into the taste experience in a moment.
Who Founded International Protein?
International Protein was co-founded by Christine Envall, a food scientist, sports nutritionist, and IFBB Professional Bodybuilder, along with Troy Bremner, a sports supplement expert. Christine Envall is not only a three-time IFBB world champion, but also Australia’s only IFBB Professional female bodybuilder. Her background in both competitive bodybuilding and food science gives International Protein a unique edge in formulating high-quality supplements designed for serious athletes.
The company has gained a reputation for producing research-backed, high-quality sports supplements, with a strong emphasis on performance, muscle growth, and recovery. Given Christine’s experience in the bodybuilding industry, it’s no surprise that International Protein Synergy was developed with muscle-building efficiency in mind.
Related: Still stuck in the skinny-fat trap? You train hard, eat “healthy,” but still look soft instead of strong—sound familiar? Stop spinning your wheels. I’ll show you exactly how to build muscle, drop fat, and finally get the lean, athletic physique you’ve been chasing 👉 Click here to apply for online coaching today!
Nutritional Breakdown
Here’s what you’re getting per serve (based on the label):
✅ 32.89g protein per serving – A solid amount, comparable to high-end protein powders. There is a 40 gram serving size which means you are getting 82% protein per serve.
✅ 1.29g sugar – Low in sugar, which is great for those watching their intake.
✅ 2.5g carbs – Again, very low, making it suitable for those on a low-carb diet.
✅ 2.09g fat – Slightly more than a pure isolate, but nothing excessive.
✅ Digestive enzymes included – Helps with digestion and absorption.
This nutritional profile suggests that International Protein Synergy is a great option for muscle recovery and lean muscle building, without unnecessary fillers. You do pay the price for this! When it comes to protein powders, you get what you pay for…
Taste & Mixability
I tested the Strawberry flavour, and honestly, it’s the best strawberry-flavoured protein powder I have ever had. It’s not overly sweet, and it doesn’t have that artificial aftertaste that some protein powders suffer from. Mixed with water, the consistency is smooth with no noticeable clumps. Mixing it with milk, however, makes it creamier and brings out more of the strawberry flavour. Awesome!
Amino Acid Profile – How Does It Compare?
Amino acids are the building blocks of protein, and a high-quality protein supplement should offer a robust profile, particularly in essential amino acids (EAAs) and branched-chain amino acids (BCAAs). Here’s what International Protein Synergy delivers per 40g serving:
✅ Leucine: 3376 mg
✅ Isoleucine: 1892 mg
✅ Valine: 1936 mg (These three make up the BCAA content, critical for muscle growth and recovery.)
✅ Lysine: 2904 mg
✅ Threonine: 2040 mg
✅ Methionine: 756 mg
✅ Phenylalanine: 1252 mg
✅ Tryptophan: 606 mg
✅ Histidine: 662 mg
For non-essential amino acids, it’s also rich in Glutamic Acid (5994 mg per serve), which aids in recovery, digestion, and immune function. At the time of sampling this product, I was preparing for my first ever Hyrox competition (Men’s Pro Division). I needed to try a product that could allow me to recover faster from my Hyrox training sessions.
Comparison to Other Protein Powders
Compared to a standard whey isolate, International Protein Synergy provides a similar BCAA content but offers a more balanced release of amino acids over time, thanks to its blend of fast and slow-digesting proteins. This makes it superior for anyone looking for prolonged muscle repair rather than just a quick post-workout protein spike.
Plant-based protein powders, on the other hand, often lack the full spectrum of EAAs, meaning they require additional amino acid fortification. While some whey concentrates and blends may provide similar profiles, many lack the digestive enzymes included in International Protein Synergy, making this a better choice for absorption and gut health.
Who is This For?
This protein blend is ideal for:
✅ Skinny-fat guys looking to build muscle while keeping fat gain minimal.
✅ Athletes and gym-goers looking for sustained protein release throughout the day.
✅ People who struggle with digestion, thanks to the added enzymes.
✅ Those looking for a versatile protein that can be used post-workout or before bed.
If you’re someone who prefers a quick-digesting whey isolate, this might not be the best option for you. But if you want a balanced release of amino acids to support recovery over a longer period, this blend works well.
Final Verdict
International Protein Synergy is a solid choice if you’re looking for a multi-source protein blend that provides sustained amino acid release. The taste is exceptional, the mixability is great, and the nutritional profile is strong. If your goal is muscle recovery and lean mass building—especially for skinny-fat guys who want to transform their physique—this is worth considering.
Would I personally use it? Yes, especially as a nighttime protein or when I need something more than just a quick whey hit. If you’re interested in trying it for yourself, it’s definitely one of the better blends on the market.
Have you tried International Protein Synergy? Let me know your thoughts in the comments!
Related: Still stuck in the skinny-fat trap? You train hard, eat “healthy,” but still look soft instead of strong—sound familiar? Stop spinning your wheels. I’ll show you exactly how to build muscle, drop fat, and finally get the lean, athletic physique you’ve been chasing 👉 Click here to apply for online coaching today!
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