Proprietary Protein Blend
Also known as: Protein supplement, Mixed protein supplement, Protein blend, Proprietary Protein Blend
Overview
A proprietary protein blend is a dietary supplement comprising a mixture of various protein sources, such as whey protein, casein protein, soy protein, and sometimes additional amino acids. These mixtures are designed to provide a complete amino acid profile to support various health and fitness goals. Commonly utilized by athletes, bodybuilders, and older adults, these supplements aim to enhance muscle growth, recovery, and overall health. The effectiveness and composition of proprietary blends can vary significantly between manufacturers, but they generally focus on achieving high protein efficiency ratios and good digestibility. While extensive research backs individual protein sources, proprietary blends' specific effects are less consistently studied due to variability in protein combinations and formulations.
Benefits
Key benefits of proprietary protein blends include improved muscle mass and strength, particularly in older adults and athletes. Systematic reviews indicate that protein supplementation can significantly enhance muscle strength, with a standardized mean difference (SMD) greater than 0.5. Meta-analyses highlight that such blends also improve endurance performance among athletes. The effects are particularly noteworthy for older adults, with protein and essential amino acid (EAA) supplements shown to enhance physical function. Overall, the benefits of protein supplementation may take several weeks to months to manifest, commonly requiring consistent usage alongside resistance training.
How it works
Proprietary protein blends exert their effects primarily by supplying essential amino acids that stimulate muscle protein synthesis (MPS), crucial for muscle growth and repair. These proteins interact with various body systems, especially the muscular and endocrine systems. The mechanisms involve the mTOR (mechanistic target of rapamycin) pathway, which regulates cellular growth and protein synthesis. Different protein sources have varied absorption rates, with whey protein being rapidly absorbed, while casein provides a slower release of amino acids, ensuring a sustained protein supply.
Side effects
Protein supplements are generally safe when taken in recommended amounts, with common side effects including gastrointestinal discomfort such as bloating, gas, and cramping. Less common side effects include allergic reactions to milk or soy proteins. Rarely, severe allergic responses or kidney strain may occur in individuals with pre-existing kidney problems. Notably, protein supplements can interact with certain medications, such as blood thinners. Contraindications exist for individuals with severe kidney or liver diseases, and pregnant or breastfeeding women should consult healthcare providers before use. It's important to monitor intake and consult a healthcare professional in case of adverse effects.
Dosage
The recommended dosage of proprietary protein blends generally starts at a minimum of 20-30 grams of protein per serving to effectively stimulate muscle protein synthesis. For athletes, a daily intake of 1.2 to 1.6 grams of protein per kilogram of body weight is often advised, while older adults may benefit from 1.0 to 1.2 grams per kilogram. Evaluating individual needs and goals is essential, as excessive protein intake (over 2 grams per kilogram per day) can pose health risks. Timing of supplementation is also crucial, with post-workout and pre-bedtime being optimal for recovery and muscle building. For different protein types, consider that whey protein is suitable immediately after workouts, while casein is recommended at night for gradual release.
FAQs
Are protein supplements safe?
Generally, protein supplements are considered safe, but those with kidney or liver issues should consult a healthcare provider.
When should I take protein supplements?
Timing varies based on goals; post-workout and pre-bedtime are common for optimal muscle recovery and growth.
What results can I expect from protein supplementation?
Improvements in muscle mass, strength, and endurance can typically be observed over several weeks to months.
Is more protein always better?
High protein doses don't necessarily lead to better results and can cause side effects, so moderation is key.
Research Sources
- https://www.cambridge.org/core/journals/british-journal-of-nutrition/article/systematic-review-and-metaanalysis-of-the-effect-of-protein-and-amino-acid-supplements-in-older-adults-with-acute-or-chronic-conditions/83C8288C73D79685854E78D5415B9029 – A systematic review showed that protein and EAA supplements significantly improved fat-free mass, muscle strength, and physical function in older adults with various health conditions, showcasing high-quality evidence gathered from multiple studies.
- https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2024.1455728/full – This Bayesian meta-analysis explored the effects of protein intake on athletic performance, finding that higher protein consumption improved endurance performance and muscle glycogen levels in athletes across the collected studies.
- https://www.mdpi.com/2072-6643/16/7/941 – A systematic review and network meta-analysis revealed that different protein supplements have varying degrees of efficacy on muscle mass, strength, and mobility, highlighting whey and casein as particularly effective for these outcomes.
Supplements Containing Proprietary Protein Blend

Only Protein Meal Replacement Vanilla
Only Protein

Only Protein Meal Replacement Chocolate
Only Protein

100% Vegan Protein Vanilla Flavor
BioChem

100% Vegan Protein Chocolate Flavor
BioChem

100% Hemp & Whey Powder Vanilla
BioChem Sports

Liquid Amino Complex Natural Orange Flavor
Iron-Tek

Trutein Chocolate Mint
Body Nutrition

Trutein Lemon Meringue Pie
Body Nutrition

Trutein Chocolate Mint
Body Nutrition

Trutein Lemon Meringue Pie
Body Nutrition

Trutein Smores
Body Nutrition
Recommended Articles

Top Fertility Supplements for Women in 2025
By 2025, new FDA-approved fertility supplements, emphasizing organic ingredients, have shown significant effectiveness in aiding conception for women in their 30s.

Barcode-Scanner Apps & Supplements: A Reality Check
Barcode-scanner supplement apps vary in accuracy, especially with proprietary blends, but advancements are improving their reliability.

Legal Pre-Workout Supplements for Athletes
Legal pre-workout supplements like those with caffeine, beta-alanine, and creatine can safely enhance athletic performance without failing doping tests.

Top Testosterone Boosters for Cyclists: A Buyer's Guide
For cyclists, choosing testosterone boosters involves finding scientifically-backed, third-party tested products, with top picks including brands like TestoGen and Prime Male.