Sellers at Tesco are third party sellers we have invited to sell on Tesco direct. These are companies we’ve selected to provide you with a wider range of products to choose from in one place. They are a mixture of well-known high street retailers and specialist retailers who operate online. Plus, you earn Clubcard points on all seller orders.
Seller deliveries & returns
Delivery times and costs vary by seller - further details are shown on the product pages and at checkout.
If Click & Collect is available from a seller, it will also show on the product page and at checkout.
The delivery and return of seller items is managed by each seller. For further details, or if you have a question about the delivery or return of a seller product, please use the Seller directory to find the seller’s ‘help’ page.
The Sci-Mx Mass system is a scientifically advanced mass gain shake for muscle size, bulk and power. High in branched chain amino acids and glutamine for recovery and growth, it's a super high protein, high calorie and high carbohydrate mass gain formula. Sci-Mx mass system is designed to accelerate muscle gains when used in conjunction with heavy weight training.
The ultimate mass builder, it contains 46g of cutting edge GRS-5® gradual release system protein per serving. The cross-action™ carbohydrates are sourced from corn so the formula contains no low grade sugar. No other mass gainer contains GRS-5® Protein, Aminogen® and Vit-MX-Sport™.