L-Lysine & HCL 1000 mg, 60 Vegan Capsules
- Essential Amino Acid for Protein Synthesis & Tissue Repair*
- Helps Maintain Normal Collagen Formation for Skin Health*
- Key Amino Acid for Herpes Virus Suppression Support*
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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Quick Answer: L-Lysine 1000 mg
L-Lysine is an essential amino acid clinically used to support cold sore recovery, collagen synthesis, and calcium absorption. Take 1 capsule (1000 mg) daily with water, away from arginine-rich foods, for 2-4 weeks during an outbreak or as ongoing daily support. Safe for long-term use at recommended doses.
What Is L-Lysine?
L-Lysine is one of 9 essential amino acids the human body cannot make on its own and must obtain from food or supplementation. It plays a structural role in collagen, calcium absorption, and immune function — and has a well-studied antiviral role in suppressing herpes simplex (HSV-1) outbreaks by blocking the arginine pathway the virus needs to replicate.
The HCL form (hydrochloride) stabilizes the amino acid for consistent absorption and shelf life. Remedy's Nutrition L-Lysine 1000 mg delivers the research-dose in one vegan capsule.
Key Benefits
- Cold sore support. Clinical trials use 1000-3000 mg daily to shorten outbreak duration and reduce recurrence frequency.
- Collagen synthesis. L-lysine is a direct precursor for collagen cross-linking that keeps skin, tendons, and blood vessels elastic.
- Calcium absorption. Research shows lysine improves intestinal calcium uptake and reduces urinary calcium loss.
- Immune and skin integrity. Supports wound healing, bone mineralization, and carnitine production for fatty acid metabolism.
- Athletic recovery. Combined with other amino acids, supports post-exercise tissue repair.
How to Use L-Lysine
Dosing varies by goal. Use this table to match dose to use case:
| Goal | Daily Dose | Timing |
|---|---|---|
| Daily maintenance / collagen support | 1000 mg | Any time with water |
| Cold sore prevention | 1000-2000 mg | Daily, ongoing |
| Active cold sore outbreak | 3000 mg (divided) | 1 cap 3x daily with meals |
| Athletic recovery stack | 1000 mg | Post-workout with protein |
Take with water on an empty stomach for fastest absorption, or with meals if you experience mild GI sensitivity. Avoid taking at the same time as high-arginine foods (nuts, chocolate, gelatin) during an active outbreak — arginine competes with lysine at the same transporter.
Key Ingredients
- L-Lysine Hydrochloride 1000 mg — pharmaceutical-grade, fermentation-derived, vegan
- Vegan capsule shell — hypromellose (plant cellulose), no gelatin
- No fillers, dyes, or allergens — free from gluten, dairy, soy, GMO
Safety & Cautions
L-Lysine is generally well tolerated at recommended doses. Mild GI discomfort (stomach upset, diarrhea) is the most commonly reported side effect and usually resolves by taking with food. Consult your healthcare provider before use if you have kidney or liver disease, are pregnant or breastfeeding, or take medications such as calcium supplements (which lysine enhances). These statements have not been evaluated by the FDA; this product is not intended to diagnose, treat, cure, or prevent any disease.
Why Choose Remedy's Nutrition L-Lysine?
- Clinical-dose 1000 mg per capsule — one pill delivers the research-backed dose
- Vegan, hypoallergenic capsule — no gelatin, no animal byproducts
- Third-party tested for purity — no heavy metals or contaminants
- Made in the USA in a cGMP-certified facility
- Pharmacist-formulated by Remedy's founder, a licensed pharmacist
Frequently Asked Questions
What is L-lysine good for? +
L-lysine supports cold sore recovery, collagen synthesis, calcium absorption, and immune function. Clinical doses of 1000-3000 mg daily are associated with shorter herpes simplex outbreaks and reduced recurrence frequency. As an essential amino acid, lysine is also a direct building block for tissue repair, bone mineralization, and carnitine production for energy metabolism.
How much L-lysine should I take daily? +
1000 mg daily is the standard maintenance dose. During an active cold sore outbreak, clinical protocols use 3000 mg daily in 3 divided doses for 5-7 days, then taper back to 1000 mg. Athletes pairing lysine with other amino acids for recovery typically use 1000 mg post-workout. Stay under 3000 mg/day unless directed by a provider.
Does L-lysine really help cold sores? +
Yes. Multiple clinical trials show 1000-3000 mg daily L-lysine reduces the frequency, severity, and duration of HSV-1 cold sore outbreaks. It works by blocking arginine — an amino acid the herpes virus needs to replicate. The effect is strongest when lysine is taken daily for prevention and at higher doses during an active outbreak.
When is the best time to take L-lysine? +
Take L-lysine on an empty stomach with water for fastest absorption, typically 30 minutes before a meal. If you experience mild stomach upset, take it with food instead. During an outbreak, split the 3000 mg dose across 3 meals. Avoid taking at the same time as high-arginine foods (nuts, chocolate, seeds) if treating herpes.
Can I take L-lysine every day long-term? +
Yes. Daily L-lysine at 1000 mg is considered safe for long-term use in healthy adults. Studies tracking use for 12+ months show no significant adverse effects at this dose. People with kidney or liver disease should consult a provider before daily supplementation, and doses above 3000 mg/day should not be taken without medical guidance.
What are the side effects of L-lysine? +
L-lysine is generally well tolerated. The most commonly reported side effects are mild GI symptoms — stomach discomfort, nausea, or loose stools — usually resolved by taking with food. Rare higher-dose effects include abdominal cramping. People with kidney disease should avoid supplementation, as lysine is cleared through the kidneys.
Can I take L-lysine with other supplements? +
Yes. L-lysine pairs well with vitamin C, zinc, and collagen peptides for skin and immune support, and enhances calcium absorption. Avoid taking it simultaneously with arginine or ornithine supplements — they compete for the same amino acid transporter. A 2-hour gap between lysine and arginine-rich supplements is sufficient.
Is L-lysine vegan? +
Yes. Remedy's Nutrition L-Lysine is 100% vegan. The amino acid is produced by bacterial fermentation (not from animal sources), and the capsule shell uses hypromellose — plant-derived cellulose — not gelatin. The product is also free from gluten, dairy, soy, and GMO ingredients, making it suitable for most allergen-restricted diets.