SuppHelper
search
Home›Supplements›Amino Acid›Lysine›L-Lysine 600 mg 21st Century
Product Image

L-Lysine 600 mg

21st Century
4.7
★ ★ ★ ★ ★
(1177 ratings)
Lysine 600 mg
Product Image
Score 85

This 21st Century L-Lysine offers a practical 600 mg dose with a touch of calcium, providing a good everyday option for those looking to support hair, immunity, and bone health.

How scoring works
scaleQuantity:90 Tablet(s) • (90 servings)
track_changesGoals:
flag Hair Health
flag Immunity
flag Bone Health
flag Skin Health

leaderboard Score 85

This 21st Century L-Lysine offers a practical 600 mg dose with a touch of calcium, providing a good everyday option for those looking to support hair, immunity, and bone health.

How scoring works
$4.46($0.04 per serving)
iHerb
$ 4.46
flagReport prices
psychologyAnalysis

This L-Lysine supplement from 21st Century offers a practical 600 mg dose of L-Lysine Hydrochloride per tablet, which is a common and generally well-regarded form of this essential amino acid. It’s designed to contribute to various aspects of well-being, including hair health, immune system function, and bone support.

A notable feature is the inclusion of a small amount of calcium carbonate, which can complement lysine's potential role in calcium absorption, adding a slight edge for those focusing on bone support. The tablet form provides a consistent dose and is easy to store, making it a straightforward choice for daily use.

thumb_upPros
  • Very affordable price per serving
  • Standard 600 mg L-Lysine dose
  • Includes a small amount of calcium
  • Tablet form is generally easy to take
thumb_downCons
  • 600mg might be a lower dose for some specific uses compared to 1000mg options
  • Calcium amount is quite small; not a significant source
  • Tablet form might not be preferred by all over capsules
warningWarnings
  • Consult a healthcare professional if you have kidney conditions or are taking calcium channel blockers
  • May cause mild stomach upset in some individuals; try taking with food
  • Always follow the suggested serving on the label
scienceNutrient quality
80 Highest impact

The L-Lysine Hydrochloride form is standard and recognized for its bioavailability. The addition of calcium carbonate is a basic form of calcium, contributing to a straightforward nutrient profile.

visibilityIngredient transparency
85 Highest impact

The product clearly lists L-Lysine Hydrochloride and Calcium Carbonate with their respective quantities, providing clear information about what's inside the tablet.

workspace_premiumValue for money
90 Highest impact

Given its very low price per serving and a standard dose of L-Lysine, this product offers considerable value. The small calcium addition also adds a bit more to its offering without increasing the cost significantly.

thumb_upCustomer satisfaction
82 Highest impact

With over a thousand reviews, this product has a good base of user feedback, suggesting a generally positive experience for many customers. It indicates a consistent and reliable offering.

storefrontBrand
75 High impact

21st Century is a widely available brand known for offering basic, affordable supplements, often found in various retail outlets. The brand focuses on delivering standard products without premium claims.

flagReport analysis
track_changesGoals
flagBone Health
Impact
Highest effect
Lysine may support calcium absorption and the formula includes a small amount of calcium, which is important for maintaining bone density and strength.
View goal →
flagHair Health
Impact
Highest effect
Lysine is a building block for proteins and may help with nutrient absorption vital for hair structure and growth. This dose provides a solid foundation for this goal.
View goal →
flagImmunity
Impact
Highest effect
L-Lysine contributes to protein synthesis, which is fundamental for immune cell function and overall immune system support. This product delivers a reliable amount for daily intake.
View goal →
scienceIngredients
IngredientAmount per serving
Calcium
30 mg
L-Lysine Hydrochloride
600 mg
grain_off Gluten Free person Adults 18–50
flagReport overview
Lysine 88
This product delivers a standard and well-understood form of L-Lysine at a compelling price point, making it a solid choice within the Lysine category for regular supplementation.
scienceView ingredientinventory_2View products
inventory_2Alternative products
90 Value

L-Lysine 1000 mg

AN Amazing Nutrition Amazing Formulas
4.6
★★★★★
(4173 ratings)
This alternative provides a generous 1000 mg of L-Lysine per serving with a high satisfaction score, at a slightly higher but still very competitive cost per serving, offering great value for a higher dose.
Other sellers (1)
88 Value

L-Lysine 500 mg

Jarrow Formulas
4.8
★★★★★
(4286 ratings)
This L-Lysine capsule offers a solid 500 mg dose with a very good satisfaction score, and it's available at a slightly higher but still very appealing cost per serving, representing excellent overall value.
Other sellers (3)
88 Value

L-Lysine 500 mg

NOW
4.8
★★★★★
(4489 ratings)
This option delivers a good 500 mg of L-Lysine with a higher satisfaction score compared to your current product, and it's available at a similar cost per serving, providing a strong balance of quality and affordability.
Other sellers (5)
98 Performance

L-Lysine 500 mg

NOW
4.9
★★★★★
(441 ratings)
This L-Lysine product comes with an exceptionally high satisfaction score, suggesting it's a very well-regarded option for supporting your hair, immunity, and bone health goals, even without the added calcium.
Other sellers (1)
92 Performance

L-Lysine 500 mg

California Gold Nutrition
4.8
★★★★★
(4438 ratings)
Offering pure L-Lysine, this alternative has a strong satisfaction score, indicating it's a very good quality option to support your wellness goals, with an emphasis on the core ingredient.
Other sellers (1)
90 Performance

L-Lysine Powder 960 mg

Carlson
4.8
★★★★★
(2270 ratings)
This powdered L-Lysine provides a higher dose per serving (960 mg) and an excellent satisfaction score, making it a potentially more potent choice for your goals, especially if you prefer a powder form.
Other sellers (3)
95 Budget

L-Lysine

NOW
4.8
★★★★★
(3972 ratings)
This L-Lysine powder offers an exceptionally low cost per serving, making it a highly economical option if you're looking for a cheaper way to get your lysine, even at a slightly lower dose.
Other sellers (3)
90 Value

L-Lysine 1000 mg

AN Amazing Nutrition Amazing Formulas
4.6
★★★★★
(4173 ratings)
This alternative provides a generous 1000 mg of L-Lysine per serving with a high satisfaction score, at a slightly higher but still very competitive cost per serving, offering great value for a higher dose.
Other sellers (1)
88 Value

L-Lysine 500 mg

Jarrow Formulas
4.8
★★★★★
(4286 ratings)
This L-Lysine capsule offers a solid 500 mg dose with a very good satisfaction score, and it's available at a slightly higher but still very appealing cost per serving, representing excellent overall value.
Other sellers (3)
88 Value

L-Lysine 500 mg

NOW
4.8
★★★★★
(4489 ratings)
This option delivers a good 500 mg of L-Lysine with a higher satisfaction score compared to your current product, and it's available at a similar cost per serving, providing a strong balance of quality and affordability.
Other sellers (5)
98 Performance

L-Lysine 500 mg

NOW
4.9
★★★★★
(441 ratings)
This L-Lysine product comes with an exceptionally high satisfaction score, suggesting it's a very well-regarded option for supporting your hair, immunity, and bone health goals, even without the added calcium.
Other sellers (1)
92 Performance

L-Lysine 500 mg

California Gold Nutrition
4.8
★★★★★
(4438 ratings)
Offering pure L-Lysine, this alternative has a strong satisfaction score, indicating it's a very good quality option to support your wellness goals, with an emphasis on the core ingredient.
Other sellers (1)
90 Performance

L-Lysine Powder 960 mg

Carlson
4.8
★★★★★
(2270 ratings)
This powdered L-Lysine provides a higher dose per serving (960 mg) and an excellent satisfaction score, making it a potentially more potent choice for your goals, especially if you prefer a powder form.
Other sellers (3)
flagReport alternatives

SuppHelper

Compare supplements smarter. Science-backed, user-rated, updated daily.

Explore

  • Compare Supplements
  • Health Goals
  • Stacks

Legal

  • Privacy Policy
  • Terms of Use
  • Medical Disclaimer

Stay in the Loop

Medical disclaimer: Information on SuppHelper is for educational purposes only and is not medical advice. Statements on this site about dietary supplements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare professional before using supplements. Read full disclaimer

© 2025 SuppHelper. All rights reserved.