Source Naturals
Source Naturals L-Lysine 1,000 mg 100 Tablets
80/100
SUPPIE SCORE
68/100
EFFICACY
High
SAFETY
82/100
CLEANLINESS
What Does Source Naturals L-Lysine 1,000 mg 100 Tablets Do?
Provides 1,000 mg of free-form L-lysine per tablet to help reduce cold sore recurrence and support collagen synthesis, though acute outbreak control usually demands higher doses.
Does 1,000 mg of L-lysine stop active cold sore outbreaks?
Should I take L-lysine tablets with food or on an empty stomach?
Can taking L-lysine compete with other amino acids like arginine?
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What Are the Benefits of Source Naturals L-Lysine 1,000 mg 100 Tablets?
Based on proven scientific research
Cold Sore FrequencyModerate
Collagen SynthesisModerate
Calcium AbsorptionMild
Good For:
What Are the Side Effects of Source Naturals Source Naturals L-Lysine 1,000 mg 100 Tablets?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•Well-tolerated at 1,000 mg daily; higher doses (above 3,000 mg daily) occasionally trigger mild stomach cramps, nausea, or loose stools.
•L-lysine shares intestinal transport with L-arginine; excessive chronic intake could theoretically skew amino acid balance.
•High-dose lysine supplementation can enhance calcium absorption and decrease its excretion, requiring caution if taken alongside high-dose calcium supplements.
•Safety during pregnancy and breastfeeding has not been established in clinical trials; avoid therapeutic doses without medical supervision.
•Formulated without yeast, dairy, egg, gluten, soy, wheat, sugar, starch, artificial colors, or preservatives.
Potential Side Effects
Negative Interactions
Inactive Ingredients
Stearic acid
Low RiskSorbitol
Low RiskSilica
Low RiskModified cellulose gum
Low RiskMagnesium stearate
Low RiskWhat Are the Ingredients in Source Naturals Source Naturals L-Lysine 1,000 mg 100 Tablets?
L-Lysine (as L-lysine HCl)
1 g
Stearic acid
Sorbitol
Silica
Modified cellulose gum
Magnesium stearate
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Dosage & Bioavailability
How the active doses and forms in Source Naturals L-Lysine 1,000 mg 100 Tablets compare to the research.
•L-Lysine (as L-lysine HCl) — 1 g a day; within the 1-3 g/day used in studies.
•L-Lysine (as L-lysine HCl) — l lysine HCl is one of the better-absorbed, well-studied forms of L-lysine.
Frequently Asked Questions
Common questions about Source Naturals Source Naturals L-Lysine 1,000 mg 100 Tablets