Last updated: August 10, 2021

Welcome to our big L-Proline test 2021. Here we present all the L-Proline products that we have tested in detail. We have compiled detailed background information and added a summary of customer reviews on the internet.

We would like to make your purchase decision easier and help you find the best L-Proline product for you.

You will also find answers to frequently asked questions in our guide. If available, we also offer interesting test videos. Furthermore, you will also find some important information on this page that you should definitely pay attention to if you want to buy L-proline as a dietary supplement.




Summary

  • L-proline is a non-essential amino acid that your body naturally produces and protects your tissues.
  • It is available as a dietary supplement in the form of tablets, capsules and powder.
  • You can also get L-proline from food, as it is found in cheese, meat and soya products.

L-Proline: Our Picks

Guide: Questions you should ask yourself before buying L-Proline

What is L-proline and what effects does it have?

L-proline is an amino acid that is not essential. It is naturally produced by your body and is an important component of your connective tissue.

The human body makes the amino acid L-proline from glutamic acid. L-proline is an important collagen building block and is found in the proteins of your connective tissue, as well as in bones and cartilage, where it has regenerative effects. (1)

Not only soybeans are rich in L-proline, but all other soy products contain it as well. (Image source: 123rf.com / 37196105)

Furthermore, L-proline protects against collagen degradation by blocking digestive enzymes called collagenases. If there is a lack of L-proline, the enzymes mentioned work more intensively and connective tissue is broken down. (2)

Therefore, a sufficient supply of the amino acid is important. This is especially true in old age or in the case of chronic and protracted illnesses. Here, the risk of a deficiency condition increases, as the body's own production of L-proline is often no longer sufficient.

A deficiency can also lead to joint problems, a general drop in performance or instability of the arterial walls. (2)

Where is L-proline found?

You find L-proline in everyday foods and probably unknowingly feed it to your body several times a week. Generally, a high amount of L-proline is found in dairy and meat products, as well as fish and soy products. (3)

The following table gives you an overview of foods containing proline. The information corresponds to the amount of L-proline per 100g of the food:

Food L-proline per 100g
Cheese (Emmental, Edam, Tilsiter, Appenzeller, Camembert, Brie) 2,160 - 3,500mg
Soybeans 2,820mg
Beef 950 - 1,780mg
Peanuts 1,450mg
Rusk 1,290mg
Lentils 1.040 - 1,220mg
millet 1,090mg
tuna, sole 890mg
fish (salmon, redfish, plaice, mackerel, trout, sardine, lobster) 710 - 850mg
oatmeal 840mg
pork 755mg
walnuts 600mg

How much does L-proline cost?

The price of pure L-proline varies depending on the dosage form and where you buy it. Online via Amazon, you can get L-proline as a powder for as little as €6 per 100g.

Online Price per 100g
Powder 6€ to 12€
Capsules 12€ to 20€
Tablets 10€ to 18€

You usually have to pay more in the pharmacy or health food store than online.

However, here you have the advantage of being advised and getting helpful tips if necessary. Capsules cost around 70€ on average.

In what dosage is L-proline available?

The usual dosage is 500mg L-proline per tablet or capsule. As a rule, 1,000mg of L-proline is recommended per day. This corresponds to two tablets or capsules.

Decision: What types of L-proline are there and which is right for you?

L-proline is usually offered in its pure form. You have the choice between the following types:

  • Capsules
  • Tablets
  • Powder

However, there are also useful combinations that can be helpful, especially in the case of illness. The most popular combination is L-proline together with vitamin C.

The different types each have advantages and disadvantages. Depending on what you prefer, a different type is suitable for you. The following section is designed to help you decide.

What are the advantages and disadvantages of L-proline capsules?

Capsules are usually made of animal gelatine and are therefore often unsuitable for vegetarians. However, there are also vegetable alternatives for the capsule shell.

Advantages
  • Already dosed
  • Space-saving, perfect for on the go
  • Dissolve only in the intestine and release the amino acid there
  • Neutral in taste
Disadvantages
  • Usually contain animal gelatine and colourings
  • Usually more expensive than powders and tablets
  • Can become brittle or sticky

If this is a decisive criterion for you, it is best to find out about the ingredients directly from the manufacturer.

Moisture or air can make them brittle and sticky, so they should be stored in a dry place.

What are the advantages and disadvantages of L-proline tablets?

Tablets are a classic form of administration and are absorbed by the body in the digestive tract.

Advantages
  • Already dosed
  • High stability of the active ingredient
  • Long shelf life
Disadvantages
  • Water is needed to take the tablets
  • Unsuitable for people with swallowing difficulties

They have a very long shelf life, which is why you can easily buy larger quantities and possibly benefit from a price advantage.

Tablets are taken with a glass of water.

What are the advantages and disadvantages of L-proline powder?

Powder is usually only available in very large quantities and is less suitable if you want to test the food supplement first.

In addition, it is not yet dosed in the usual 500mg and you would have to measure it yourself first.

Advantages
  • Inexpensive
  • Directly utilised by the body
Disadvantages
  • Not yet dosed
  • Possibly unpleasant taste
  • May contain flavourings

Some suppliers include a measuring spoon with the delivery, which should make it easier for you to measure out.

Buying criteria: You can use these factors to compare and evaluate L-proline

In the following, we will show you which aspects you can use to decide between the many L-proline products.

The criteria you can use to compare L-Proline products include:

  • Dosage
  • Package size
  • Suitability for lifestyle / diet

In the following paragraphs, we will explain to you what is important in the individual criteria in order to make your purchase decision easier.

Dosage

It is best to discuss the intake of L-Proline with your doctor. He or she can best decide on the dosage.

Manufacturers recommend taking one to two L-Proline capsules per day, each containing 500mg per capsule or tablet.

Package size

L-Proline is available in different quantities. Common sizes are:

  • 60 capsules or tablets 500mg each
  • 100 capsules or tablets 500mg each
  • 120 capsules or tablets of 500mg
  • 150 capsules or tablets per 500mg
  • 500g powder, equivalent to 1,000 L-proline capsules/tablets each 500mg

When choosing a pack size, you should decide beforehand how long you want to take the food supplement or whether you want to test it first.

L-proline can be taken in different forms - as a capsule, tablet or even as a powder. (Photo source: 123rf.com / 69596006)

If you take 500 mg of L-proline twice a day, the smallest size (60 capsules) will last for about a month.

If you decide to take the powder, you should already have experience with L-proline and the dosage or be sure that you want to take it long-term.

Suitability for lifestyle / diet

As you may have already noticed, the manufacturers of the food supplement advertise heavily with the buzzwords vegan, gluten-free or GMO-free.

This is usually just a ploy to get lots of clicks. By and large, almost all pure L-proline products on the market are:

  • Vegan
  • Without artificial additives
  • Without genetic engineering
  • Gluten-free
  • Lactose-free

Capsules are an exception here. The capsule shell is often made from gelatine, which is an animal product.

However, there are also plant-based alternatives that guarantee a vegan product.

You have to take a closer look at the ingredients of the products. If the manufacturer has not published them, you can contact them by email or phone.

Facts worth knowing about L-proline

Finally, we would like to answer a few important questions about L-proline and its intake.

You will learn what non-essential amino acids are and where L-proline can be classified, how it is taken and what side effects can occur when taking it.

What are non-essential amino acids and where can L-proline be classified?

Non-essential amino acids are the basic building blocks of proteins and can be produced by the body itself in sufficient quantities.

As a rule, they do not have to be supplied from outside. This is also the difference to essential amino acids.

They are not produced by the body and must be taken in externally through food or dietary supplements.

Strictly speaking, L-proline belongs to the semi-essential amino acids. These can also be produced by our body through synthesis.

The difference lies in the fact that L-proline is no longer sufficiently produced in certain circumstances, such as old age or certain illnesses, and must be taken in via

https://www.supplementbibel.de/l-arginin-test/

Dietary supplements. Besides L-proline, these also include:

  • Arginine
  • Asparagine
  • Cysteine
  • Glutamine
  • Glycon
  • Tyrosine

How is L-proline taken?

Classically, L-proline tablets and capsules are swallowed. If you have chosen one of the two forms of administration, you should make sure to take it with sufficient liquid.

If you take L-proline in a loose powder, dissolve it in water and drink it.

What side effects or interactions can occur when taking L-proline?

No side effects or interactions are known so far.

What happens if I take too much L-proline?

A negative effect of an overdose of L-proline has not been found so far. However, in this case you should consult your doctor.

What additives are available with L-proline and what effect do they have?

L-proline protects your cell walls from becoming brittle and unstable. The flexibility of the artery walls is particularly important because it prevents mutated cells from penetrating through the cell walls.

This is why L-proline is often used in cancer treatments in combination with high doses of vitamin C and L-lysine.

The combination of L-proline and vitamin C can also relieve pain in the knee, shoulder and neck areas in cases of osteoarthritis. (4)

By combining it with vitamin C, your body can produce hydroxyproline from L-proline. This is used to form structural proteins such as collagen and elastin and helps regenerate inflammation in bones and cartilage.

In addition, it supports joint reconstruction and tissue regeneration. (1)

There are also some products on the market that contain L-proline and L-lysine. Here, it is usually recommended to take additional vitamin C.

A combination of L-proline, vitamin C and collagen is also available. As already mentioned, L-proline promotes collagen formation.

Another option are amino acid complexes that contain several amino acids in addition to L-proline, such as leucine, methionine or tryptophan.

(Image source: 123rf.com / 69595950)

References (4)

1. Gröger H, Wilken J. Die Anwendung von L‐Prolin als Enzymmimetikum und weitere neue asymmetrische Synthesen mit kleinen organischen Molekülen als chiralen Katalysatoren. Angewandte ChemieVolume 113, Issue 3. 30 January 2001
Source

2. Miller W. L-Prolin zur Behandlung von degenerativen Gelenkerkrankungen. Karl F. Haug Verlag in MVS Medizinverlage Stuttgart GmbH & Co. KG HK 2009; 58(3): 130-135
Source

3. Behnke U. Die Zusammensetzung der Lebensmittel. Nährwert‐Tabellen. Begründet von S. W. Souci, W. Fachmann und H. Kraut. Im Auftrag des Bundesministeriums für Ernährung, Landwirtschaft und Forsten, Bonn, herausgegeben von der Deutschen Forschungsanstalt für Lebensmittelchemie, Garching b. München, 5., revidierte und ergänzte Auflage, bearbeitet von H. Scherz und F. Senser. XXVIII und 1091 Seiten. medpharm Scientific Publishers, Stuttgart, und CRC PRESS, Boca Raton. Ann Arbor, London, Tokyo 1994. Food / NahrungVolume 39, Issue 1
Source

4. Rutjes A, Nüesch E, Reichenbach S, Jüni P. S-Adenosylmethionine for osteoarthritis of the knee or hip. Cochrane Database of Systematic Reviews, Issue 4, 2009
Source

Why you can trust me?

Wissenschaftlicher Artikel
Gröger H, Wilken J. Die Anwendung von L‐Prolin als Enzymmimetikum und weitere neue asymmetrische Synthesen mit kleinen organischen Molekülen als chiralen Katalysatoren. Angewandte ChemieVolume 113, Issue 3. 30 January 2001
Go to source
Wissenschaftliches Buch
Miller W. L-Prolin zur Behandlung von degenerativen Gelenkerkrankungen. Karl F. Haug Verlag in MVS Medizinverlage Stuttgart GmbH & Co. KG HK 2009; 58(3): 130-135
Go to source
Wissenschaftlicher Artikel
Behnke U. Die Zusammensetzung der Lebensmittel. Nährwert‐Tabellen. Begründet von S. W. Souci, W. Fachmann und H. Kraut. Im Auftrag des Bundesministeriums für Ernährung, Landwirtschaft und Forsten, Bonn, herausgegeben von der Deutschen Forschungsanstalt für Lebensmittelchemie, Garching b. München, 5., revidierte und ergänzte Auflage, bearbeitet von H. Scherz und F. Senser. XXVIII und 1091 Seiten. medpharm Scientific Publishers, Stuttgart, und CRC PRESS, Boca Raton. Ann Arbor, London, Tokyo 1994. Food / NahrungVolume 39, Issue 1
Go to source
Wissenschaftlicher Artikel
Rutjes A, Nüesch E, Reichenbach S, Jüni P. S-Adenosylmethionine for osteoarthritis of the knee or hip. Cochrane Database of Systematic Reviews, Issue 4, 2009
Go to source
Reviews