Proteins

Protein constitutes about 20% of an adult's body mass, making it the second most abundant component after water. As a sports nutritionist with 15 years of experience, I can confirm that adequate protein intake is fundamental for recovery, muscle growth, and overall athletic performance. According to the position of the International Society of Sports Nutrition (ISSN), athletes and physically active individuals need 1.4 to 2.0 grams of protein per kilogram of body weight daily to optimize adaptation to training.

In my practice, I observe that many people underestimate the role of protein supplements in achieving these levels, especially with intensive training regimens or limited dietary intake. Here you will find 41 products that can help you meet your daily needs.

Choosing the right protein depends on your individual goals and dietary preferences. Whey protein is ideal for rapid absorption after a workout, while casein provides a slower release of amino acids, suitable for consumption before sleep. Plant-based proteins are an excellent alternative for vegans or people with lactose intolerance. Carefully examine the composition and choose a product that best suits your needs for recovery and growth.

What is the best protein on the market in 2026?

The choice of quality protein depends on three factors: biological value, raw material purity, and manufacturer transparency. As the exclusive official importer for Bulgaria of global leaders, SportZone offers products that meet all these criteria — without intermediaries and without counterfeits.

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Which protein for which goal?

Why buy from SportZone

We are an official partner of absolutely all brands in the catalog. Every product comes directly from the manufacturer — 100% original, with fresh expiration dates and activated international warranty. Free shipping over 50 EUR for orders in Bulgaria.

Types of Protein Powder – A Complete Guide 2026

In my practice, I clearly distinguish between whey concentrate (about 70-80% protein, best price/quality ratio), whey isolate (90%+ protein, minimal lactose, rapid absorption), and hydrolysate (pre-digested for ultra-fast absorption, ideal before and immediately after training). Casein, plant-based blends (pea, rice, hemp), and egg protein are specialized solutions for specific goals and dietary regimes.

Comparison Table: Which Protein When

How to Calculate Your Daily Protein Intake

According to the position of the ISSN (International Society of Sports Nutrition), active individuals need 1.4–2.0 g of protein per kilogram of body weight daily. For an 80 kg male, this means 112-160 g per day, distributed in 4-5 servings of 25-40 g. From my experience: if you eat strictly from complete sources (meat, fish, eggs, dairy), one or two protein doses cover the difference without excessive caloric load.

Distribution Example (80 kg male, goal: mass maintenance)

Protein for Women – Is There a Difference?

I am often asked if women should avoid protein powder for fear of becoming “masculine”. Absolutely not – protein itself does not build mass; calories and training do. Women who strength train 3-4 times a week recover faster with 1.2-1.6 g/kg of protein daily. Whey isolate with a pleasant taste (strawberry, vanilla, chocolate) is the most accessible choice – it replaces dessert without the extra sugars.

Safety and Contraindications

Quality whey protein is safe for healthy adults. Individuals with diagnosed kidney disease or severe liver damage must consult a doctor before consumption. Lactose intolerance is rarely an issue with isolates (under 1% lactose), but with concentrates, it can cause discomfort. Always start with half a serving to test tolerance.

The information does not replace medical advice. For health problems, consult a doctor or dietitian.

B2B – Wholesale for Gyms, Sports Clubs, and Stores

SportZone is an official importer and offers preferential terms for fitness centers, dietitians, trainers, and retail outlets. You get access to quick ordering, individual trade prices, marketing support from the manufacturer, and certificates of authenticity for each batch. Register as a trader to activate a B2B profile.