Of the twenty amino acids that make up our proteins, nine are “essential” — meaning the body simply cannot produce them, and lysine is one of them. The only way to get it every day is through food or supplementation. The “L-” prefix denotes the levorotatory form, the only naturally occurring, biologically active form found in food and usable by your cells — exactly the molecule your body needs, with no chemical alteration. Lysine plays several major roles: it takes part in collagen formation, supports immune defences, improves calcium absorption, and feeds into carnitine production, essential for turning fat into energy. The WHO sets requirements at 30–40 mg per kg of body weight per day — roughly 2,100–2,800 mg for a 70 kg adult — a level many people, especially those eating little or no animal protein, struggle to reach through diet alone.

Lysine is prized for its role in natural defences: it feeds into the production of antibodies, enzymes and hormones involved in the immune response. It has also built a reputation around cold sores (herpes labialis): several lines of evidence point to lysine competing with arginine, another amino acid the HSV-1 virus needs to replicate — favouring lysine over arginine is thought to make replication harder for the virus and space out flare-ups in people prone to recurrences. At 600 mg per capsule, Dynveo L-Lysine makes it easy to adjust the dose from simple maintenance to a reinforced course.

Lysine works behind the scenes on everything that structures the body. Collagen — the most abundant protein in the body, forming the framework of skin, tendons, ligaments, cartilage and bone — cannot be built solidly without lysine, which forms the cross-links giving collagen its strength and elasticity. Lysine also improves calcium absorption in the gut and reduces urinary calcium loss, helping the body make better use of the calcium already consumed — a valuable asset for bone strength, particularly around menopause and in older adults. For athletes, lysine directly supports muscle-protein synthesis (building and repairing fibres after exercise) and fuels carnitine production, which shuttles fat into mitochondria to be burned for energy — supporting endurance and recovery.

Dynveo’s lysine is obtained through natural fermentation of non-GMO corn rather than chemical synthesis, with purity above 99%, each batch tested and certified. There are zero excipients — no additives, fillers or colourings, just lysine — in a pullulan (plant-based) capsule shell that better protects the active ingredient from air and moisture. The formula is 100% vegan, with no animal source, gelatin or lactose, made in France (Montpellier) under ISO-certified quality control, in eco-responsible, biodegradable packaging free of bisphenols and phthalates.

Dose: 1 to 3 capsules a day with a large glass of water, ideally in the morning on an empty stomach or 30 minutes before a meal for optimal absorption. Maintenance: 1 capsule a day (600 mg). Reinforced course: 3 capsules a day (1,800 mg), split across the day if preferred, for 1 to 3 months during demanding periods. Lysine can be taken continuously or in 2–3 month courses followed by a one-month break. Pairs well with vitamin C (boosts collagen synthesis alongside lysine) and zinc bisglycinate (the classic immunity partner, especially in winter).

Do not exceed the recommended dose. This product is not a substitute for a varied diet or a healthy lifestyle. Keep out of reach of children. Store away from heat, light and moisture. Not recommended for pregnant or breastfeeding women without medical advice. If on medication, ask your doctor or pharmacist for advice.

What is L-Lysine actually used for?

An essential amino acid the body cannot make, involved in collagen synthesis (skin, tendons, bone), immune support, calcium absorption, carnitine production and muscle building — especially useful when dietary intake falls short.

How much lysine should I take per day?

The WHO recommends 30–40 mg per kg per day, or 2,100–2,800 mg for a 70 kg adult. With Dynveo L-Lysine at 600 mg per capsule, 3 capsules provide 1,800 mg.

Is lysine effective against cold sores?

Some evidence suggests regular lysine intake may space out cold-sore flare-ups in people prone to recurrences, by competing with arginine. Note that lysine is not a medicine and does not treat herpes — consult your doctor for medical concerns.

Is Dynveo L-Lysine really vegan?

Yes, 100%. It comes from fermentation of non-GMO corn with no animal source, and the capsules are pullulan, a plant-based polysaccharide — no gelatin, no lactose.

Herba Barona is an independent specialist supplement shop in the heart of Paris — established in 2006. What you order is genuinely on our shelves: we ship from our own stock, with no dropshipping and no long waits.

Visit us at 10 rue Théophile Roussel, Paris 12 — or use Click & Collect and pick up your order in-store. We also deliver across France and Europe. Friendly, expert advice in English from our team.

Where is the shop?

Herba Barona is at 10 rue Théophile Roussel, 75012 Paris — a two-minute walk from Ledru-Rollin (line 8), close to Bastille. Open Tuesday to Saturday, 9:30 am–6:30 pm.

Can I order online or collect in store?

Yes. We ship across France and Europe under the same conditions as our French store, or choose Click & Collect to pick up your order for free at our Paris shop.