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.
"L-glutamine is an amino acid found in proteins of all life forms. It is classified as a semi-essential or conditionally essential amino acid. L-glutamine is the most abundant amino acid in the body, and plasma glutamine levels are the highest of any amino acid. L-glutamine is predominantly synthesized and stored in skeletal muscle. The amino acid L-glutamate is metabolized to L-glutamine in a reaction catalyzed by the enzyme glutamine synthase, a reaction which, in addition to L-glutamate, requires ammonia, ATP and magnesium. L-Glutamine is becoming one of the most widely-used supplements within the health supplement industry. Not only is it proving extremely popular with body builders, strength athletes and those interested in maximising physical strength and power, it is also becoming a hot product for the non-athletic individual interested in optimal health and strong immunity from illness."