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Source Naturals

Proline & Lysine, 120 Tablets

4.7 · 2289 reviews
1,676 ₽

Dietary Supplement Suitable for Vegetarians L-Lysine is one of 9 essential amino acids that cannot be made in the body. It is the basic raw material for carnitine synthesis. L-Proline can be made in the body, but low protein/ vegetarian diets may not always promote optimal L-proline production. L-Lysine and L-proline amino acids are the precursors of hydroxylysine (HL) and hydroxyproline (HP), two constituents of collagen. Collagen is an essential component of arterial linings. Vitamin C, a strong antioxidant, is also essential for the production of collagen. Hawthorn berry and grape seed extract are potent natural antioxidants due to their high levels of proanthocyanidins. These proanthocyanidin esters are excellent free radical scavengers.

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Dietary Supplement Suitable for Vegetarians L-Lysine is one of 9 essential amino acids that cannot be made in the body. It is the basic raw material for carnitine synthesis. L-Proline can be made in the body, but low protein/ vegetarian diets may not always promote optimal L-proline production. L-Lysine and L-proline amino acids are the precursors of hydroxylysine (HL) and hydroxyproline (HP), two constituents of collagen. Collagen is an essential component of arterial linings. Vitamin C, a strong antioxidant, is also essential for the production of collagen. Hawthorn berry and grape seed extract are potent natural antioxidants due to their high levels of proanthocyanidins. These proanthocyanidin esters are excellent free radical scavengers.

Customer reviews

5.0
verified purchase
Excellent for immune system

L-Lysine is an essential amino acid, part of proteins, for the growth and repair of tissues, the production of antibodies, hormones, and fermenters. Collagen formation and tissue regeneration are involved. Antiviral action, especially with ARVI and herpes. Lowers blood cholesterol levels. Slows down damage to the lens of the eye. Improves calcium absorption. Fights fatigue, fatigue, concentration problems, hair loss, anemia. Free-form amino acids - ready for assimilation, quickly enter the bloodstream.

8/1/2021
5.0
verified purchase
Good one

The effect is mostly cumulative. Now I have less frequent anxious and sad thoughts, my mood is more positive, and some small problems are not as painful to cope with as before. Another plus is that this amino acid helps to produce collagen, which is so necessary for us women. So far in a month I can see that my skin looks better, of course there is no wow effect, but I like this result.

7/30/2023
5.0
verified purchase
Proline & L-Lysine

The quality of this Proline & L-Lysine supplement is excellent. This supplement combines 550 mg of Proline and L-Lysine, both essential amino acids that play crucial roles in collagen formation and tissue repair. L-Lysine supports calcium absorption and is vital for muscle protein synthesis, while Proline is essential for collagen stability. Together, these amino acids are a fantastic combination for anyone interested in skin, joint, or muscle health.

10/28/2024
5.0
verified purchase
Lipoprotein (a) Cholesterol Control - Linus Paulin Formulation for blood vessel health

I take this due to high Lipoprotein (a) cholesterol running in my family and in my body. this composition was discovered by scientist late 2 times Nobel price winner Dr. Linus Paulin and i have since reduced by blood level Lipoprotein (a) by 60%, this is a very effective solution in one buttle. also eating high collagen food along with vitamin C can also produce similar result. but this composition is easier.

9/27/2025
5.0
verified purchase
Great for broken bone recovery!

I bought this, along with Now Foods Bone Strength and D-Flame products when my husband (musician) broke his wrist at age 40. He was extremely stressed about the speed of his healing given his age and whether he'd be able to get the level of dexterity back that he needs for his career. This stuff was awesome, and in combo with the other two supps his doctors and hand therapist were super positive about his rate of recovery. I highly recommend this for anyone recovering from a broken bone.

1/13/2025
5.0
verified purchase

I started taking this duo for skin and joint health, but the real win was how it helped my cold sores—when I feel that dreaded tingle, mega-dosing these amino acids actually shortens outbreaks. The 550 mg tablets are easy to split (no weird taste), and I love that it’s a simple, no-filler formula. After months of use, my nails are stronger, and my skin feels more resilient too.

5/21/2025
5.0
verified purchase
Good for energy

Quality,size, test and ingredients are good! Good for protein metabolism, muscle growth and energy training

4/12/2025
5.0
verified purchase

Love this supplement! It helps me during fall and winter times when my lips are likely to get cold sores, it is a building material for bones, blood, arteries - essential amino acids. It’s parts of collagen, our bodies is literally made of this amino acids, and this is the brand I choose!

9/22/2023
5.0
verified purchase

This product offers superb quality and comes in a perfectly convenient size. It is attractively packaged and crafted with clean, high-grade ingredients. The results it delivers are both visible and impressive.

2/28/2026
5.0
verified purchase
super

I’ve been taking this Proline-Lysine supplement for a few weeks and I’m happy with it. The tablets are easy to swallow and don’t upset my stomach. I feel more balanced overall and notice slight support in joint comfort and skin health. It seems to help my body recover after long days. Overall — a good supplement that I plan to keep using

2/5/2026