Lysine
Alternative names: Hydrochlorure de L-Lysine, Lisina, L-Lysine, L-Lysine HCl, L-Lysine Hydrochloride, L-Lysine Monohydrochloride, Lys, Lysine HCl, Lysine Hydrochloride, Lysine Monohydrochloride, Monochlohydrate de L-Lysine, Monochlohydrate de Lysine
Actions: Antiviral, Bone, Lipid, Neurologic
Background
Lysine is an essential amino acid. The human body cannot make lysine, so it must be eaten in the diet. Sources include meat, fish, dairy, and eggs.
Lysine is a building block for making proteins in the body. It might also prevent the herpes virus from growing.
People use lysine for cold sores, canker sores, athletic performance, diabetes, and many other conditions, but there is no good scientific evidence to support most of these uses.
Lysine is a building block for making proteins in the body. It might also prevent the herpes virus from growing.
People use lysine for cold sores, canker sores, athletic performance, diabetes, and many other conditions, but there is no good scientific evidence to support most of these uses.
Safety Safety definitions
When taken by mouth: Lysine is possibly safe for most people when taken in doses up to 3000 mg daily for up to one year. It can cause side effects such as stomach pain and diarrhea.
When applied to the skin: Lysine is possibly safe for most people when used short-term.
Lysinuric protein intolerance: Lysine supplementation might cause diarrhea and stomach cramps in children who have this rare genetic disorder.
When applied to the skin: Lysine is possibly safe for most people when used short-term.
Special Precautions & Warnings:
Pregnancy and breast-feeding: There isn't enough reliable information to know if lysine is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.Lysinuric protein intolerance: Lysine supplementation might cause diarrhea and stomach cramps in children who have this rare genetic disorder.
Effectiveness
NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Possibly effective Effectiveness definitions
- Cold sores (herpes labialis). Taking lysine by mouth might help prevent and heal cold sores. It's not clear if applying it to the skin helps.
Dosing & administration
Lysine has most often been used by adults in doses up to 3 grams daily for up to 1 year. It's also available in different topical products such as creams. Speak with a healthcare provider to find out what type of product and dose might be best for a specific condition.
Interactions with pharmaceuticals
Gastrointestinal agents (5-HT4 agonist)
Interaction Rating=Minor Be watchful with this combination.
Lysine might reduce the effects of some gastrointestinal drugs called 5-HT4 agonists.
Interactions with herbs & supplements
Calcium: Lysine can increase how much calcium the body absorbs. This can increase the amount of calcium in the body. Taking lysine along with calcium might cause calcium levels to become too high.
Interactions with foods
There are no known interactions with foods.
Products
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1 kg Natural
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Per 10 g (X Immuno Tonic):
- Beef bones
- Sea salt
- Curcuma longa
- Piper nigrum
- Chilli powder
- Honey
- Apple cider vinegar
- Allium sativum
- Armoracia rusticana
- Zingiber officinale
- Daucus carota powder (Carrot)
- Apium graveolens
- Allium cepa
- Malus (Apple)
- Orange
- Citrus limon (Lemon)
- Brassica juncea
- Petroselinum crispum
- Rosmarinus officinalis
- Thymus vulgaris
- Juniperus communis (berry)
- Bay leaf
- Szechuan pepper
- Backhousia citriodora
- Pink Himalayan crystal salt
- Origanum vulgare (Oregano)
390 g X Immuno Tonic
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Per 30 g (Vanilla Bean):
- Whey protein isolate 29.94 g
- Sunflower lecithin
- Natural flavours
- Stevia rebaubiana
- Vanilla planifolia (Vanilla bean)
- Bacillus coagulans (MTCC 5260)
- Protease
- Amylase enzyme
- Cellulase
- Lactase
- Lipase
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Per 30 g (Chocolate):
500 g Chocolate
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Per 30 g (Creamy Vanilla):
- Pea protein isolate
- Medium chain triglycerides (MCT)
- Natural flavours
- Linum usitatissimum (seed) (Flaxseed)
- Plantago ovata (husk) (Psyllium)
- Sunflower seed
- Quinoa powder
- Amaranth powder
- Vaccinium corymbosum powder
- Rubus idaeus powder
- Euterpe oleracea (berry) ext. (Acai)
- L-leucine
- L-isoleucine
- L-valine
- L-glutamine
- Levocarnitine (L-carnitine)
- Stevia rebaubiana
- Fagopyrum esculentum powder
1 kg Creamy Vanilla
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Per 30 g (Chocolate):
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Per 10 g (Manuka Honey, Ginger & Cinnamon):
390 g Manuka Honey, Ginger & Cinnamon
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Per 35 g (Chocolate):
- Cannabis sativa powder 20.65 g
- Coconut milk powder
- Vanilla planifolia (Vanilla bean extract)
- Sunflower lecithin
- Silica - colloidal anhydrous
- Thaumatin
- Theobroma cacao powder 9.8 g
- Natural chocolate flavour
- Natural flavours
- Tapioca maltodextrin
- Acacia sp.
420 g Chocolate
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RRP: $49.95$42.46Save: 15%
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1 kg Chocolate
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Per 7 g (Lemonade):
- L-lysine
- Schisandra chinensis ext. equiv. dry 2.5 g
- L-leucine
- L-isoleucine
- L-methionine
- L-threonine
- L-valine
- L-phenylalanine
- L-histidine
- L-tryptophan
- Calcium citrate
- Magnesium bisglycinate
- Flavour
- Silica - colloidal anhydrous
- Ascorbic acid (Vitamin C)
- Potassium citrate
- Pyridoxal 5-phosphate (P5P)
- Methylcobalamin (Activated B12)
- Stevia rebaubiana
420 g Lemonade
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Per 30 g (Chocolate):
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Per 30 g (Triple Chocolate):
- Golden pea protein (sprout) bio-fermented
- Natural flavours
- Sea mineral complex
- Spinacia oleracea (Spinach)
- Arthrospira platensis (Spirulina)
- Chlorella pyrenoidosa powder
- Cinnamomum verum powder
- Glycyrrhiza glabra powder
- Zingiber officinale powder
- Taraxacum officinale powder
- Ginkgo biloba powder
- Eleutherococcus senticosus powder
- Silybum marianum powder
- Capsicum spp. powder
- Centella asiatica powder
- Syzygium aromaticum powder
- Stevia rebaubiana (leaf) ext.
- Ananas comosus (Bromelain)
- Theobroma cacao (Cocoa powder)
- Acacia sp. (gum)
1 kg Triple Chocolate
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Per 30 g (Choc & Coconut):
1 kg Choc & Coconut
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Per serve (30g) (Natural Chocolate):
- Organic Pea Protein
- Vicia faba (Fava bean protein)
- Coconut medium-chain triglyceride (Coconut MCT)
- Rice Peptides
- Organic Coconut Milk Powder
- Natural vanilla flavour
- Natural caramel flavour
- Cyamopsis tetragonoloba (Guar gum)
- Stevia rebaubiana
- Luo Han Guo (fruit) ext. (Monk fruit)
- Organic Alkalised Cocoa Powder
- Natural chocolate flavour
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Per 20 g (Vanilla):
- L-lysine
- Oryza sativa (Brown rice protein fermented)
- Natural vanilla flavour
- Stevia rebaubiana
- Cellulase
- Proteolytic enzymes
Practitioner product
Per 5 g (Raspberry):
- L-lysine
- L-leucine
- L-tyrosine
- Medium chain triglycerides (MCT) 250 mg
- Total goBHB™
- Calcium beta-hydroxybutyrate 1.55 g
- Magnesium beta-hydroxybutyrate monohydrate 1.05 g
- Sodium beta-hydroxybutyrate 0.6 g
- Silica - colloidal anhydrous
- Ascorbic acid (Vitamin C)
- Stevia rebaubiana
- Pyridoxal 5-phosphate (P5P)
- Methylcobalamin (Activated B12)
- Natural flavours
- Citric acid monohydrate
300 g Raspberry
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Practitioner product
Per 5 g:
- Lysine hydrochloride 1.25 g equiv. lysine 1 g
- Ascorbic acid (Vitamin C) 1 g
- Zinc citrate dihydrate 80 mg equiv. zinc 25 mg
- Quercetin dihydrate 100 mg
- Manganese amino acid chelate 25 mg equiv. manganese 5 mg
- Pyridoxal 5-phosphate monohydrate (P5P) 39.2 mg equiv. pyridoxine 25 mg
- Beta-carotene carotenoids (Vitamin A) 2 mg
- Selenomethionine 200 μg equiv. selenium 75 μg
Practitioner product
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This monograph was last reviewed on 07/04/2025 10:00:00 and last updated on 31/10/2020 02:10:28. Monographs are reviewed and/or updated multiple times per month and at least once per year.
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Natural Medicines rates safety based on scientific evidence according to the following scale: Likely Safe, Possibly Safe, Possibly Unsafe, Likely Unsafe, Unsafe, and Insufficient Evidence to Rate. For more information about Natural Medicines’ Safety Rating System, click here.
The Natural Medicines Effectiveness Ratings are assigned for specific indications. A product might be rated "Possibly Effective" for one condition, but be rated "Likely Ineffective" for another condition, depending on the evidence. For more info click here.
