Optimum Nutrition are giving Attitude readers the chance to win one of three Gold Standard stacks.

Each stack contains a 5lb tub GS Chocolate Whey, a 4lb tub Vanilla Casein, Gold Standard BCAA Peach & Passion Fruit, and Gold Standard Pre-workout Pink Lemonade.

To be in with a chance of winning, simply enter your details below:

Please wait...

Gold Standard Whey

Genuine athletes know that their protein choice matters. That’s why we are committed to delivering you with quality and trust in our Gold Standard 100% Whey – the world’s No.1 protein. Demand the same level of quality from your sports nutrition as you do from your training.

There’s only one #GoldStandard

  • 24g of premium whey protein but low in sugars and fat
  • 5.5g of naturally occurring BCAA in each serving
  • 4g glutamine & glutamine acid
  • Enjoy first thing in the morning &/or pre or post-workout
  • High protein to support muscle growth & maintenance
  • Over 30 Years of setting the Gold Standard


  • In the gym, during your workout, Gold Standard BCAA™ can help you during intense training while supporting your immune system and reducing tiredness*, so you can hit your next workout. This scientific blend of Vitamin C, Magnesium, and 5g of branched chain amino acids is the only intra-workout formula to contain new ingredients, Rhodiola rosea + Wellmune®
  • 5 g BCAAs in 2:1:1 ratio
  • Vitamin C* to support immunity
  • Magnesium** for muscle support
  • Magnesium and vitamin C to reduce tiredness and fatigue
  • Unique formula that contains Rhodiola rosea, Wellmune® and a blend of electrolytes.
  • Light, Refreshing and Easily Drinkable
  • Banned substance tested


What Does It Do?

This formula provides you with the essential ingredients to achieve your TRUE STRENGTH including 175 mg of caffeine from natural sources to help increase alertness and focus in the gym. Gold Standard Pre-Workout is made with premium ingredients including creatine for power & performance and vitamins B1, B3, B5, B6 and B12 which all contribute to normal energy yielding metabolism.

  • Unleash focus, power and performance.
  • Made with premium ingredients.
  • 175 mg of caffeine from natural sources.
  • 3 g creatine for power & performance.


Our Gold Standard 100% Casein is the World’s No. 1 and the industry’s first all-micellar Casein. It delivers 24 g of slower digesting casein proteins to support muscle growth.

  • Slower-digesting protein powder.
  • Supports muscle growth and maintenance.
  • 24 g of pure micellar casein but just 0.5 g of fat & no added sugar.
  • Enjoy before bed to support muscle growth while you rest.