Swanson L-Lysine - Free Form, Supports Nervous System Health, 500 mg (100 Vegan Capsules)
$11.09
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Guests are saying
L Lysine is highly regarded for its effectiveness in preventing cold sores and supporting overall immune health. Many guests have shared their positive experiences, noting its benefits for stress relief and mouth health. The capsule form is preferred for its ease of use, and guests appreciate the value for money. Regular use has led to significant improvements in their health, making it a staple in their daily routines.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.8 out of 5 stars with 158 reviews
100% would recommend
1 recommendations
5 out of 5 stars
23 April, 2026
originally posted on swansonvitamins.com
L-lysine
L-lysine is an essential amino acid essential for tissue growth and repair. Since your body cannot produce lysine on its own, it needs to be obtained through diet or supplements.
5 out of 5 stars
23 March, 2026
originally posted on swansonvitamins.com
It is a good product and Swanson has fast delivery.
L-Lysine is great for stress, my doctor said I should use it.
5 out of 5 stars
17 March, 2026
originally posted on swansonvitamins.com
love these
these help with blisters in my mouth from stomach issues and allergies
5 out of 5 stars
15 March, 2026
originally posted on swansonvitamins.com
L-Lysine
Swanson is the only site I could find that carries Capsule form of L-Lysine
5 out of 5 stars
15 March, 2026
originally posted on swansonvitamins.com
Great product great value
I take this every night for decades. When I was in highschool 50 years ago I got cold sores and my Doctor said that my body was lacking this amino acid. So I've been taking it ever since. If I feel the tingling in my lip I load up on the dosage.
5 out of 5 stars
13 March, 2026
originally posted on swansonvitamins.com
Cold sore prevention
Very effective in the prevention of cold sores both inside and outside of the mouth. I ran out recently and kept forgetting to re order. Sure enough I got a cold sore on my lip. Before using this product due to stress or getting run down physically, especially after being sick I was regularly getting cold sores. Now, when using this I don't.
5 out of 5 stars
9 February, 2026
originally posted on swansonvitamins.com
I definitely need these
Really good stuff. I can be without it. Especially in winter.
5 out of 5 stars
5 February, 2026
originally posted on swansonvitamins.com
Great for cold sores
Whenever I feel a cold sore come on, I take lysine. I find it helps with severity and cuts down the time of a col sore.
5 out of 5 stars
22 January, 2026
originally posted on swansonvitamins.com
Good anti-viral
Be sure to take this on an empty stomach before a meal, being a single amino acid, it is better absorbed that way. I have been using this for years for its anti-viral properties. I take 2 a day at the first sign of a virus coming on.
5 out of 5 stars
27 December, 2025
originally posted on swansonvitamins.com
Budget friendly
Great stuff and wonderful price for the amount you get
5 out of 5 stars
13 December, 2025
originally posted on swansonvitamins.com
Great in fighting viruses
I bought this product to help fight viruses. This includes the Covid virus, flu, and shingles. Thankfully at this point I have not needed to use it. I love that I have this product on hand so if any of my family members comes down with a virus I can give this to help them to make recovery quicker.
4 out of 5 stars
13 December, 2025
originally posted on swansonvitamins.com
Helps reduce daily stress on the body
I've used this for years and am happy with its benefits!
5 out of 5 stars
Thumbs up graphic, would recommend
11 December, 2025Verified purchase
An amazing supplement....
The shipping and delivery was quite delayed but do like the quality and brand of this product. Lysine is an essential amino acid and great for many things like tissue repair and stress/anxiety.
5 out of 5 stars
29 April, 2021
originally posted on swansonvitamins.com
Excellent anti viral for all forms of Corona virus.
Excellent product and price. I highly recommend Swanson products.
5 out of 5 stars
21 April, 2021
originally posted on swansonvitamins.com
Definately works
Works very well, when a skin issues comes up. I take 3000 mg. Per day til it is healed. Few days.
5 out of 5 stars
8 April, 2021
originally posted on swansonvitamins.com
(no review title)
I don't feel any different, but also heard it fights viruses. I have not been sick this winter. Thankful this is helping.
5 out of 5 stars
8 April, 2021
originally posted on swansonvitamins.com
Great!
I had a tendency to break out with cold sores. I take this 2x a day and no cold sores for a year now!!!
5 out of 5 stars
8 April, 2021
originally posted on swansonvitamins.com
(no review title)
I gave it 5 stars, but it quickly defaulted to this screen as soon as I selected the first star. I think it is a great product. I have been taking it for quite some time for herpes simplex virus. With regular use, I find that it is a good preventative measure.
5 out of 5 stars
8 April, 2021
originally posted on swansonvitamins.com
My Lysine
It works great and a great price. Thank you for good quality vitamins at a price that is affordable.
1 out of 5 stars
8 April, 2021
originally posted on swansonvitamins.com
(no review title)
The capsules are so large that I cannot take them. Regret purchase.