Lysine

Lysine is one of the nine essential amino acids, meaning the human body cannot synthesise it and must acquire it from food or supplementation. It is a fundamental building block for protein synthesis and plays a structural role in the formation of collagen, the most abundant protein in connective tissues including skin, bones, tendons, and cartilage. As a private-label ingredient, lysine is well-established across EU and US supplement markets, particularly in formulations targeting skin health, immune support, and sports recovery.

Brands choose lysine for gummy formats because of its neutral taste profile, low cost, and strong consumer recognition. It pairs naturally with Vitamin C and Zinc — both of which carry EFSA-authorised health claims — allowing brands to build credible claim stacks around collagen formation and immune function. Lysine is also one of the most familiar and commercially understood amino acid actives across EU and US markets, making it a low-risk addition to any gummy range.

Origin and history

Lysine was first isolated in 1889 by German chemist Edmund Drechsel from casein, a milk protein. Its structure was elucidated in the early 20th century, and it was classified as an essential amino acid in the 1930s when researchers demonstrated that animals could not survive on diets lacking it. Industrial production of L-lysine began in the 1960s using fermentation processes with Corynebacterium glutamicum, a method still used today for the majority of global supply.

Today, lysine is produced commercially through bacterial fermentation of carbohydrate feedstocks such as corn, sugarcane, or cassava. The fermentation broth is purified, converted to the hydrochloride salt (L-lysine HCl) for stability and solubility, and dried into crystalline powder. This manufacturing process is well-established, cost-efficient, and scalable, making lysine one of the most affordable amino acids available for supplement manufacturing.

Scientific overview

Lysine functions as a substrate for protein synthesis and is particularly concentrated in collagen, where it undergoes enzymatic hydroxylation to form hydroxylysine — a critical step for collagen cross-linking and structural integrity. This mechanism underpins its role in connective tissue health, skin elasticity, and wound healing. Lysine also competes with arginine for transport and metabolism, which is the basis for its use in herpes simplex virus management, as higher lysine:arginine ratios may reduce viral replication.

Bioavailability of L-lysine HCl is high, with absorption occurring primarily in the small intestine via carrier-mediated transport shared with other cationic amino acids. The hydrochloride form is preferred in supplement manufacturing because it offers better solubility and stability than the free-base form. Lysine is heat-stable and water-soluble, making it well-suited for gummy manufacturing without degradation concerns during processing.

From a manufacturing perspective, lysine presents few challenges. It is heat-stable, soluble in gummy matrices, and has a neutral taste that does not require masking. The primary formulation consideration is payload — achieving doses of 500 mg to 3000 mg per serving requires careful gummy weight and density planning. Cost-per-mg is low, making lysine an economical active for high-dose formulations.

Lysine occupies a well-defined position in the amino acid supplement market, particularly for skin health, immune support, and sports recovery ranges. Consumer awareness of lysine is moderate but growing, especially among audiences interested in collagen support and herpes management. For brand founders, lysine offers a cost-effective way to build a credible amino acid story without the premium pricing associated with branched-chain amino acids or specialty amino acids. It is frequently positioned alongside Vitamin C and Zinc in beauty-from-within and immune defence gummy ranges.

From a formulation and manufacturing standpoint, lysine is one of the easiest amino acids to work with in gummy production. It is heat-stable, water-soluble, and neutral-tasting, which means it does not require flavour masking or special processing conditions. The main tradeoff is payload — a 1000 mg dose of lysine in a 3 g gummy represents one-third of the total weight, which limits space for other actives. DAT reviews target dose and gummy weight per project to confirm feasibility and recommend the optimal gummy format.

For pack copy, brands must observe strict claim discipline. Lysine has no EFSA-authorised health claims under Regulation 432/2012, so any claim positioning must be delivered through co-formulated nutrients. For example, a gummy containing lysine and Vitamin C can carry the claim "Vitamin C contributes to normal collagen formation for the normal function of skin." A gummy with lysine and Zinc can carry "Zinc contributes to normal immune function." DAT reviews all claim wording per project and market to ensure compliance with EU and UK regulations.