California Gold Nutrition

BSN

BSN (Bio-Engineered Supplements & Nutrition) was founded in Florida, USA in 2001 and quickly became one of the leading brands. Glanbia (owner of Optimum Nutrition) acquired it in 2011. BSN's best-known product is Syntha-6, a multi-source protein of whey concentrate, whey isolate and micellar casein. The blend digests over a longer period and tastes like a smooth milkshake. The N.O.-Xplode pre-workout and True-Mass gainer are classics too. Who it suits: anyone looking for a tasty, filling protein, people who drink protein during the day or before bed, and those building mass. ⭐ Quality score: 4.5/5 — Glanbia's quality system and long-proven recipes.

Nutricost

Nutricost is a brand from Utah, USA known for simple, clean-label supplements. Its products are made in a GMP-compliant facility and tested by an independent accredited lab. The range is mostly single-ingredient: creatine monohydrate, glutamine, beta-alanine, citrulline, vitamins, minerals, CoQ10 and omega-3 — precisely dosed formulas without unnecessary extras at a fair price. Who it suits: experienced athletes who build their own stack and value exact doses and good value. ⭐ Quality score: 4/5 — independent testing and GMP manufacturing.

Body Builder

Body Builder is a sports nutrition brand manufactured in the EU to GMP standards.

MuscleMeds

MuscleMeds is a US brand known above all for Carnivor, a protein isolate made by hydrolysing USDA-inspected beef — one of the first products to make beef protein popular in sports nutrition. Carnivor contains no dairy, lactose or sugar and includes creatine monohydrate and BCAAs, making it a great alternative for anyone who can't tolerate milk. Carnivor Mass gainer and Carnivor Shred complete the range. Who it suits: people who are lactose-sensitive or want dairy-free protein, and paleo eaters. ⭐ Quality score: 4/5 — a pioneer of beef protein.