Purica L-Lysine - 300g

Sale: $15.95

Reg.: $17.95 (Save $2.00)

Made by:

Purica

Order Code: pa0740

UPC: 815555003044

Availability: In stock online

Read Reviews(2) Write a Review

(Earn free points)

Check Barrie Store (81 King St.) >

Check Orillia Store (5 Progress Dr.) >

BOOST IMMUNE FUNCTIONS WITH L-LYSINE

Stop inflammation in its tracks with For those prone to viral infections and cold sores, fight back with L-Lysine powder from Purica. Known for its antiviral properties, this amino acid is used as a builder of protein and immune support. Lysine is capable of controlling outbreaks associated with cold sores and Herpes simplex virus (HSV), and raising serotonin levels, reducing anxiety and stress. Because our bodies are unable to produce lysine on their own, it must be absorbed through supplementation. Each 1/2 teaspoon serving of Purica's L-Lysine provides 1500mg of pure lysine powder, offering maximum absorption for those who cannot take capsules. [POWDER]

Order Options

Quantity:

Save for later

Rewards Info>

Free Shipping
Orders $79+

1/2 teaspoon of powder contains:

1500mg: L-Lysine (L-Lysine monohydrochloride)

Important Information:

Consult a health care practitioner prior to use if you are following a low protein diet. Consult a health care practitioner prior to use if you are pregnant or breastfeeding. Store at room temperature 15-30˚C. Bottle opening sealed for package security. Protect from moisture

Format

Powder

300g

Dosage

1/2 teaspoon 1-2 times per day. Maintenance of good health or collagen production: 150-3000 milligrams per day. HSV: 1000 milligrams 1-3 times per day.

Product Information:

Helps prevent cold sores
Boost the immune system
Important for the production of collagen
May reduce anxiety by increasing serotonin levels

Premium Functional Mushrooms for Immune & Cognitive Support

Purica offers a premium range of medicinal mushroom supplements designed to support immunity, cognitive function, energy, and overall wellness. Core functional mushrooms include Chaga, Cordyceps, Lion’s Mane, Red Reishi, and Turkey Tail, available in high-potency capsule formats to support antioxidant defence, stamina, brain health, stress balance, and immune resilience. Advanced formulations like Complete 360 and Immune 7 combine multiple mushrooms for broad-spectrum daily support. The collection is further enhanced by the Zensations line, featuring blends such as Chilled Vibe, Clear Mind, Mindful Breath, Universal Harmony, and Vibrant Rising, crafted to promote relaxation, mental clarity, emotional balance, and overall vitality through synergistic botanical and functional ingredients. Read more >

What People Are Saying:

Reviews
POST A NEW REVIEW

Reviews for:

L-Lysine - 300g

(2 reviews)

5/5

What do you think?

Reviews By Rating

5 star

(2)

4 star

(0)

3 star

(0)

2 star

(0)

1 star

(0)

helpful votes

2 customers found this product review helpful

Rewards Info> Have you used this product? Write a Review & + Earn Free Reward Points

Sort:

Date - Newest First
- Date - Newest First
- Highest Rated
- Most Helpful

Helps HHSV/Cold sores/Herpes when antivirals won't

My immune system, has become compromised and dormant infections have overwhelmed me. One of these is the virus that causes cold sores.

At the beginning of 2025, after a surgery, I had terrible outbreaks. The infection got into my spine and I was so weak and in so much agony that I thought I was dying. I was put on mega-doses of antivirals, which took away it all, and I felt better than I have in years. But the doctor couldn't continue me on the high dose out of concern of side effects. He kept stopping the antivirals, then I'd have a major relapse, so he'd put me on them again. Each time we went through this, the antivirals worked less effectively. But I really couldn't continue on doses that would cause neurological and kidney damage, so I was put on a lower maintenance dose that didn't help at all.

I was already taking 3g of the Purica L-Lysine a day, and I kept increasing it until the pain and weakness, and the sores stopped. It's 18g, a very high dose, but I haven't had any side effects. I've read it can give you stomach upset, etc, but I haven't had any. I am very careful to take 6g three times a day. If I don't (if I miss a dose, for example) the symptoms of the infection come back.

I do still have some back pain because the virus is well and truly in my spine, but if I'm careful with my back, it's not too much of an issue. I can hold myself upright to sit up, and I can lift my feet to walk. I can stand up straight. I can turn from side to side without pain. 18g of Purica L-Lysine is necessary for this to be possible.

I looked carefully at various brands before choosing Purica. It is relatively inexpensive. It has no excipients (additives). You get 3g per teaspoon. Overall, it's the least complicated and the most helpful of any L-Lysine supplement I've looked at. And it saved my life.

By Raven from Ontario on 2026-01-28 21:08:35

Was this review Helpful?

(0)

(1)

Great Cold Sore Prevention

I've taken l-lysine in capsule form previously, but with so many other pills to keep up with, tried this powder for the first time. Glad I did. It's easy to add to food or juice, has an agreeable taste, and works great.

By healthy person from PEI on 2024-12-20 19:09:39

Was this review Helpful?

(1)

More Info

LYSINE

Nothing is more embarrassing than having a cold sore, Lysine helps fight the virus along with angina, poor circulation and osteoporosis ...

The amino acids that the body cannot produce, and need to be taken in through the diet, are called essential. Lysine is one of these amino acids. Lysine plays an important role in the metabolism of protein, carbohydrates and fatty acids. Thus it builds muscle (athletic enhancement) and rebuilds muscle after periods of illness or inactivity. It is also a component of connective tissue and brain chemicals.

Lysine is involved in growth and bone development because it increases the absorption and deposition of calcium. Lysine and another amino acid, methionine, forms carnitine. Carnitine helps cells use fats for energy production.

By competing with arginine for absorption, lysine limits the reproduction of herpes virus and prevents herpes outbreaks (cold sores). Lysine improves cardiovascular health by removing components of atherosclerotic plaques. It has been shown to increase the diameter of vessels and improve blood flow. Natural health practitioners for angina, poor circulation, herpes simplex, osteoporosis, improved athletic performance, convalescence and high triglyceride levels recommend lysine.

The biologically active form of lysine is L-lysine. It is commonly found in capsules. Lysine and arginine compete for absorption so supplements of these amino acids should be taken at different times. It is often combined with vitamins and anti-viral agents for prevention of herpes outbreaks. Take amino acid supplements at least 1/2 hour before or after a meal to maximize their absorption. If you take an individual amino acid supplement for longer than one month, add an amino acid complex to the protocol to prevent the deficiency of other amino acids.

High arginine intake will lower lysine levels. Individuals with kidney disease should use lysine cautiously.

Lysine– QUICK FACTS

SOURCES
· Cheese, eggs, fish, lima beans, milk, potatoes, red meat, soy products, yeast.

APPLICATIONS
· Angina, poor circulation, herpes simplex, osteoporosis, improved athletic performance, convalescence, high triglycerides, COLD SORES.

OPTIMUM DOSAGE
· 500-1000mg daily. (Clinical doses may be higher as recommended by your practitioner).

WORKS WELL WITH
· Vitamin B complex, vitamin C, bioflavinoids, calcium, magnesium.

IMPORTANT INFORMATION
· High arginine intake will lower lysine levels.
· Individuals with kidney disease should use lysine cautiously.