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Source Naturals3.53 oz • 60 servingsAvailable now$4.54$0.08 / serving4.7 · 937 ratings
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Retailer links may be affiliate links. Rankings and placement are not paid placement.
DoseRank is not medical advice. Review pregnancy, breastfeeding, medication interactions, allergies, and health-condition concerns with a qualified clinician before using this supplement. Stop use and report concerning adverse events to a clinician, the product maker, or the retailer.
Price history · last 10 crawls
Rating quality and social-proof history · last 10 crawls
“Customers highly appreciate the L-Lysine powder from Source Naturals, frequently mentioning its benefits for immune support and viral defense, particularly against cold sores. Many users prefer the powder form over tablets due to ease of use and ability to adjust dosage. The product is often mixed with smoothies or water, dissolves well, and has a neutral taste, though some note a slightly salty flavor. It is praised for its high quality, natural ingredients, and economical bulk packaging. Users report visible health benefits such as improved skin health and reduced severity of herpes simplex symptoms. Some customers also use it for their pets with positive results. Overall satisfaction is high with quick delivery and good customer service.”
Boost immunity
Immune system
Natural ingredient
Effective source
Pure dissolves well
Easy dosage
Valued size
Immune support
Not sure
Pure product
No concerns surfaced yet