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L-lysine

Uses of L-lysine

  • The primary use of L-Lysine is related to managing cold sores caused by the Herpes Simplex Virus (HSV). It belongs to the group of dietary supplements.

  • Additionally, L-Lysine is also used for supporting collagen production, enhancing calcium absorption, and bolstering the immune system.

Side effects of L-lysine

  • Gastrointestinal discomfort

  • Stomach pain

  • Diarrhoea

  • Nausea

How L-lysine works

  • L-Lysine is an essential amino acid.

  • It functions by serving as a building block for protein synthesis, which is vital for growth, healing and maintenance of tissues in the body.

  • L-Lysine is particularly significant in the production of collagen, a key structural protein in skin, bones and connective tissues.

  • Additionally, L-Lysine may inhibit the replication of the Herpes simplex virus (HSV), potentially reducing the severity and duration of cold sores.

Certified content

Written By

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Dr. Michelle FrankMedical Content Writer| 8 years

Doctor of Medicine

Reviewed By

Dr. Chhavi Rosha
Dr. Chhavi Rosha Health & Medical Content Writer| 8 years

BMS, FMC, MD Resident

Expert Advice

Dosage Forms Available

  • L-Lysine is available in various formulations for oral use such as tablets, capsules and also in the form of powder which can be mixed with water or juice.

  • Topical formulations such as creams and ointments containing L-Lysine are also available for external application.

Age and Dose Restrictions

  • This medicine is primarily meant for adults.

  • However, it may be used in children above 2 years of age under medical supervision and direction.

Contraindications

  • L-Lysine is contraindicated in patients with a known hypersensitivity or allergy to lysine.

  • It is also contraindicated in individuals diagnosed with a condition called hyperlysinemia (a rare genetic disorder that affects lysine metabolism).

Other Medications to Avoid

  • This medicine may interact with aminoglycosides (such as gentamicin, neomycin) and has the potential to increase the risk of nephrotoxicity and ototoxicity.

  • Before starting any prescription or over-the-counter medications, it is crucial to consult a doctor, as using antibiotics with L-Lysine may not be recommended.

Overdose and Missed Dose

  • An overdose of L-Lysine may result in gastrointestinal symptoms like nausea, vomiting, diarrhoea, or abdominal pain. If you observe these symptoms, consult your doctor immediately.

  • If you miss a scheduled dose of this medicine, take it as soon as you remember. But avoid doubling up on the dose to compensate for the missed one.

Management of Side Effects

  • Most side effects are temporary and generally harmless and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening of any of the symptoms, please consult your doctor.

  • If you experience stomach discomfort after taking this medicine, try taking it along with meals.

  • Drinking plenty of water can help manage side effects such as dry mouth or dehydration.

Use in Driving and Operating Machinery

  • This medicine does not usually affect your ability to drive or operate heavy machinery. However, if you experience any dizziness or lethargy after taking L-Lysine, avoid driving or operating machinery.

Use in Pregnancy and Lactation

  • Consult your doctor before using L-Lysine in pregnancy and breastfeeding as there is insufficient data on its safety during these conditions.

Caution in Other Conditions

  • Patients with kidney disease should exercise caution when taking L-Lysine as excessive intake may lead to increased calcium absorption and potential for kidney stone formation.

  • It is also advised to use caution in individuals with cardiovascular disorders due to the possibility of increasing cholesterol and triglyceride levels.

Special Dietary and Lifestyle Recommendations

  • Consuming a diet rich in lysine such as lean meats, poultry, fish, dairy products, and certain fruits and vegetables can help fulfil lysine requirement.

  • Regular monitoring of dietary intake is recommended when taking L-Lysine supplement to ensure balanced nutrition.

  • Regular check-ups with your doctor can help monitor the effectiveness of the medication and make necessary adjustments.

Frequently asked questions

No, L-Lysine is not a steroid. It is an essential amino acid, which means it is a building block of protein that our body cannot produce on its own.

There are no specific studies linking L-Lysine directly with sleep regulation or improvement. As an essential amino acid, it plays several roles in the body, but its impact on sleep requires further research.

Currently, there is no scientific evidence to suggest that L-Lysine affects fertility in men or women. However, if you have any concerns about this, you should discuss them with your doctor.

No particular diet restrictions are mentioned in relation to taking L-Lysine. However, it is always wise to maintain a balanced and healthy diet while taking any medicine or dietary supplement.

Yes, it is generally considered safe to take L-Lysine daily within the recommended doses. However, you should always consult your doctor before starting any new medication or dietary supplement.

The time frame for L-Lysine's effects can vary depending on the individual and the condition being managed. For example, some studies suggest that regular supplementation may reduce the frequency and severity of cold sore outbreaks over time.

There are no specific guidelines on the best time to take L-Lysine. It can be taken at any time of the day that suits you, as long as you're consistent in your routine.

Terms & Conditions


Available medicines for L-LYSINE
Lyseal 15 % Cream 50 GM
Lyseal 15 % Cream 50 GM
Tablets India Ltd
Pack of 50 GM
₹146.17
MRP ₹178.26
18.00% OFF
Baroheal 15 % Gel 20 GM
Baroheal 15 % Gel 20 GM
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₹78.61
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B Complex Syrup 200 ML
B Complex Syrup 200 ML
Torque Pharmaceuticals Pvt Ltd
Pack of 200 ML
₹123.00
MRP ₹150.00
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B Colen Active Tablet 10
B Colen Active Tablet 10
Galpha Laboratories Ltd
Pack of 10 Units
₹99.22
MRP ₹121.00
18.00% OFF
Bodyrich Mix Fruit Flavour Syrup 200ml
Bodyrich Mix Fruit Flavour Syrup 200ml
Antex Pharma Pvt Ltd
Pack of 200 ML
₹135.30
MRP ₹165.00
18.00% OFF
B Colen Capsule 10
B Colen Capsule 10
Galpha Laboratories Ltd
Pack of 10 Units
₹399.55
MRP ₹487.25
18.00% OFF
B Colen Tablet 10
B Colen Tablet 10
Galpha Laboratories Ltd
Pack of 10 Units
₹32.92
MRP ₹40.15
18.00% OFF
Lycimond Ointment 20gm
Lycimond Ointment 20gm
Diamond Drugs
Pack of 20 GM
₹102.91
MRP ₹125.50
18.00% OFF

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