L-Proline Capsules
The amino acid that makes up a third of collagen, alongside glycine.
£30.94
100 capsules
25 day supply
£1.24 per day £0.31 per capsule
Guaranteed additive free
Highest purity
Practitioner grade
Free Standard UK delivery over £35.00
30 day returns
In stock. Orders before 2pm Mon-Fri are dispatched same day.
★★★★★ "I won't go back to high street supplements. The difference in quality is something you can actually feel." Susie
L-Proline Capsules give you the amino acid that makes up a third of collagen, on its own and from a vegan source. Each capsule provides 340mg of L-proline and you take two capsules twice a day with meals. One pot holds 100 capsules, which lasts about 25 days.
Benefits of taking L-proline
Proline is an amino acid your body makes and gets from food. With glycine it makes up most of collagen, the protein of your skin, tendons and cartilage, so it is used wherever collagen is built or repaired.
- Collagen gets one of the two amino acids it is mostly built from.
- Skin, tendons and cartilage get the raw material for repair.
- Vegans get a collagen building block that collagen powder cannot give them.
Who benefits
L-Proline Capsules are most useful for:
- Vegans and vegetarians building the collagen amino acids from separate parts, alongside glycine and vitamin C.
- People looking after their joints, where it pairs with hyaluronic acid and N-acetyl glucosamine for cartilage.
- Anyone who wants a single amino acid at a measured amount rather than a blend.
If you eat collagen or gelatin, Classic Collagen Peptides Powder gives you proline together with glycine in the ratio the body uses.
What is in it
Each capsule provides 340mg of L-proline. There is nothing else in it apart from the vegetable capsule shell. Free form L-proline and proline are other names for it.
How to take it
Take two capsules twice a day with meals, which gives you 1360mg of L-proline a day. Taking it with meals supports absorption and puts the proline alongside the other amino acids in your food.
Diet and allergens
The capsules are suitable for vegans and vegetarians. They are free from gluten, dairy and nuts.
Quality
The capsules are made in the UK in a GMP certified cleanroom facility accredited to ISO 9001 and ISO 14001. Every batch is traceable from raw material to finished product. Like every supplement Nutri Tailor stocks, they are practitioner grade and guaranteed additive free.
Common questions
L-proline on its own, or collagen?
Collagen powder supplies proline together with glycine and the other amino acids of collagen, from bovine or marine sources. L-proline capsules give the single amino acid from a vegan source at a measured amount, which suits vegans and vegetarians building the set from separate parts.
How much L-proline should I take a day?
Take two capsules twice a day, which gives you 1360mg.
When is the best time to take it?
Take it with meals twice a day, with the morning and evening meals as the easy habit.
Can I take it with other supplements?
Yes. For collagen pair it with Glycine Capsules, the other main collagen amino acid, plus Vitamin C Ascorbic Acid Powder, because your body uses vitamin C to turn proline into the form collagen needs. Joints are where Hyaluronic Acid Capsules and N-Acetyl Glucosamine Capsules complete the cartilage set.
Does L-proline have side effects?
Proline is an amino acid found in everyday food and is well tolerated at this amount.
How long does it take to work?
Give it 8 to 12 weeks of daily use before you judge the effect on skin, joints or connective tissue, because collagen is built slowly.
Delivery and returns
Order before 2pm Monday to Friday and your capsules are dispatched the same day from the UK. Standard UK delivery by Royal Mail Tracked 48 takes 2 to 4 working days and costs £3.35, or it is free when you spend £35 or more. Faster delivery is available at checkout. Nutri Tailor also ships worldwide, with duties and taxes shown before you pay. You can return unopened items within 30 days of delivery. New customers get 10% off their first order.
Why Nutri Tailor
Nutri Tailor is rated 4.6 out of 5, "Excellent", on Trustpilot. Every supplement is chosen by experienced nutritional therapists. Kasia Key, Registered Associate Nutritionist, says: "I use Nutri Tailor for myself and my clients because you can be certain that their supplements are industry leading quality."
Sources
The information on this page draws on the NIH Office of Dietary Supplements and Cleveland Clinic.
| Each capsule contains: | %NRV* | |
|---|---|---|
| L-Proline | 340 mg | † |
† Nutrient Reference Value (NRV*) not established
Also listed as proline, free-form L-proline, L-proline.
Suitable for men.
Suitable for women.
Consult your healthcare practitioner before use if pregnant or breastfeeding.
Suitable for vegetarians.
Suitable for vegans.
No gluten containing ingredients.
No nut containing ingredients.
No dairy containing ingredients.
If you are taking prescribed medicines or under medical supervision, consult your healthcare practitioner before use.
Store in a cool dry place.
Keep out of reach of children.
This information is not a substitute for advice from a healthcare practitioner.
This product should not be used as a substitute for a varied diet.
Once opened, consume within 3 months.
This product is in stock. Orders placed before 2pm Mon-Fri are dispatched the same day.
UK Standard Delivery (Royal Mail Tracked 48, 2 to 4 working days) is £3.35, or free on orders of £35 or more. Express Delivery (Tracked 24, 1 to 2 working days) is £5.65, free on orders of £60 or more. Next Day Delivery (Royal Mail Special Delivery) is £8.50, free on orders of £100 or more; order before 2pm on a working day for next-working-day arrival. We dispatch Monday to Friday.
Delivery and worldwide shipping options are shown at checkout, with duties and taxes included.
Unopened items in their original packaging can be returned within 30 days of delivery.
New customers get 10% off their first order.
Quality promise
Why clinical grade matters
- ✓ GMP certified, pharmaceutical grade manufacturing
- ✓ Made in UK cleanroom facilities, ISO 9001 & ISO 14001 accredited
- ✓ No fillers, binders or additives, only active ingredients
- ✓ Fully traceable from raw material to finished product
- ✓ Non-GM, non-irradiated, 100% green energy manufacturing
Evidence
What the research shows
Our Health Reference Library is an ever-growing collection of peer-reviewed research and health guidance.
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Frequently asked questions
What is Proline good for?
Proline provides amino acids that serve as building blocks for proteins.
When should I take amino acids?
Often best on an empty stomach for optimal absorption.
Can I take this with protein?
Yes, though taking separately may improve absorption.
What are amino acids used for in the body?
Amino acids build proteins, neurotransmitters, hormones, and enzymes. Each has specific functions beyond protein synthesis.
Are amino acid supplements safe?
Generally yes for most people. Those with certain metabolic conditions should consult a practitioner.
L-proline on its own, or collagen: which should I choose?
Collagen powder supplies proline together with glycine and the other amino acids of collagen, in the ratio the body uses, and it comes from bovine or marine sources. L-proline capsules give the single amino acid from a vegan source at a measured dose. People who eat collagen or gelatin usually get enough proline; the capsules suit vegans and vegetarians building the collagen amino acids from separate parts, usually alongside glycine and vitamin C.
Why capsules rather than tablets?
Tablets need binders, fillers and a coating to hold their shape. A capsule is a cellulose shell around the powder, so it carries no binders and breaks down quickly once swallowed.
