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SUMMER SAVINGS - Save £3 On Your Order -  PROMO CODE: JVCF22A   Min Order £15, Ends 23:59 4th July

L-Lysine Capsules - 500mg

A necessary building block for all protein

88 reviews9610020
Only 8.3p per capsule
In stock
- Best Price
Only 8.2p per capsule
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Key features

  • An essential amino acid
  • Required for protein synthesis
  • Important for normal growth and muscle turnover
  • Premium, vegetarian friendly capsule
L-Lysine 500mg capsule view
Capsule Size
23mm x 8mm two-piece capsule
  • Description
  • Product Information
  • Feefo Reviews Reviews

What is L-Lysine? 

Lysine is an essential amino acid, which means that the human body cannot synthesise it.

Why take L-Lysine?

Amino acids are critical to life, and have many functions in metabolism. One particularly important function is to serve as the building blocks of proteins, which are linear chains of amino acids. Amino acids can be linked together in varying sequences to form a vast variety of proteins.

L-Lysine is a necessary building block for all protein in the body.

Just Vitamins L-Lysine provides 500mg of high-grade ingredient in fully vegetarian capsule.

Nutritional Information
One capsule typically provides 500mg of L-Lysine.
Allergen Advice
Ingredients containing allergens are highlighted in bold in the ingredients list. 
List of Ingredients
L-Lysine, Bulking Agent (Maltodextrin), Hydroxypropylmethyl Cellulose, Magnesium Stearate.
Dosage / Suggested Intake
Swallow one to two capsules per day with food or as directed by your health professional.
Legal Category
Food Supplement with L-Lysine


Customer Reviews for L-Lysine 500mg

The views expressed below are the personal opinion of Just Vitamins customers. Just Vitamins does not endorse these views, nor should they be regarded as health claims or medical advice. All reviews are collected and verified as genuine by a 3rd party called Feefo.

Overall product rating 9.6 / 10 - 88 customers have independently reviewed and recommend L-Lysine from 88 reviews (showing latest 25 reviews)
Review Date
Review Details
Service rating: Always quick service
Product: Exactly what I wanted but a bit on the large size
Easily negotiated website. Prompt delivery.
Great service. Especially like that Vitamins etc come in recyclable packaging & not plastic bottles.
Service rating: Friendly helpful staff, quality products, earth friendly packaging and delivered quickly and in excellent condition
Product: Easy to take, helps prevent me getting colds and cold sores
Service rating: My order arrived promptly and well-packaged
Product: Not tried yet, so can't comment
Service rating: letterbox friendly packaging
Product: suffer from histamine intolerance which causes recurring mouth ulcers and find this supplement eases the problem
Service rating: All good thank you
Product: It’s for my cat who has feline herpes.
As expected the usual speedy service
Service rating: Fast delivery. The tablets come in flat packets that go through the letterbox.
Product: Taking it for outbreak of cold sores. Always works.
All very simple, clear, good quality products, good packaging, etc
Service rating: Milk Thistle & L-Lysine
Product: I’m taking these after researching about the therapeutic effects for a cold sore problem and the Health benefits in general
Service rating: Great service, quick despatch and very happy with the product. I'll definitely use them again.
Product: Keeps cold sores away! I can't tell if it works because I don't get a cold sore every month any more! It must!
Service rating: By delivering the order!
Product: It never arrived unfortunately
The delivery to Ireland was fast, the pills have a good size, much easier to swallow than any other that I bought before.
Service rating: Prices are very competitive, the range of products is very wide and being added to regularly - and the delivery is speedy and efficient. The web site is really easy to use too.
Product: Easy to take, and recommended by some scientists as an antiviral supplement. My immune system isn't great, and in these pandemic times, I believe that this supplement could help protect against Corona-type viruses as well as the documented DNA viruses. This isn't an established fact - but I think it makes sense for those of us who are not well to have this as an extra defence.
Service rating: Great, arrived fast. Good price.
Product: I take these to try and prevent cold sores - whenever I feel like I might be getting one I take a few of these tablets, haven't had one since I started taking them (could be down to several factors but I really do think these help).
Discount given. Delivered speedily. Packaging now recyclable. All good😊
As excellent as ever. I’ve been buying from them for years.
I am in no position to make comment. Due to some mix up, I thought I had placed an order with "Natures Best" of Tonbridge Wells, but I failed to notice that when I selected "Vitamins" (as one would from Natures Best) I found that there was no slot for Account number, so I just went through as a guest. The pills duly arrived quite promptly. Thank you. Goodbye.
Easy to use website. Clear expectation on delivery.
Great quick service
Service rating: The vitamins I ordered came the next day. Brilliant service. Will order again.
Product: I get monthly cold sores and since taking L-Lysine I’ve not had one for 2 months
Service rating: You can rely on Just Vitamins for an excellent service and a good quality Vitamin whatever one you orde.
Product: L-Lysine another vitamin for the me I take it for cold sore prevention and it works. If you suffer from these it's worth a try.
Service rating: excellent product excellent delivery
Product: because they were great value for money
Arrived very quickly. My only concern is that there is nothing on the packet to say it meets food quality standards.

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