No known drug interactions for the matched ingredients — not a guarantee none exist. Check your meds →
Dietary supplement

L-Proline 550 mg Ingredients & Drug Interactions

by BulkSupplements.com

Capsule Category: Amino Acid/protein
No known interaction
The interaction bottom line No known interaction

L-Proline 550 mg is a dietary supplement by BulkSupplements.com with 1 active ingredient. Its ingredients are commonly taken for joint and connective tissue support, skin health and wound healing, collagen production.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.

HelloPharmacist Scorecard of L-Proline 550 mg by BulkSupplements.com

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: L-proline, an amino acid your body uses to build and maintain connective tissues like collagen, cartilage, and tendons. The capsule itself is made from bovine gelatin (an inactive ingredient that holds the powder).

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

This is a single-ingredient Proline product and its label doesn't state a use — see Proline's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence we hold shows insufficient reliable data to rate L-proline for athletic performance, fractures, wound healing, osteoporosis, or osteopenia. In plain terms, we don't have enough solid research yet to say whether it works for these uses.

The evidence, ingredient by ingredient Proline

How safe is it?

Some data gaps
Safety Information · database check
Some gaps

Safety data exists for these ingredients, but with some important gaps.

Why this rating?
  • We hold adverse-effect (side-effect) data for 0 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

L-proline comes from food sources and is generally considered low-risk from diet alone. But how safe supplemental doses are — the concentrated amounts in a pill — hasn't been well studied.

The safety data for supplemental doses during breastfeeding isn't established either, so caution is advised. Because reliable data on supplemental doses is limited, it's best to avoid extra amounts unless your doctor specifically recommends them.

Side effects, ingredient by ingredient Proline

Meds to double-check

No known interactions
Known Interaction Concern · database check
No known interactions

No medication interactions are currently documented for the matched ingredients — that isn't a guarantee none exist.

Why this rating?
  • None of the 1 matched ingredient has a documented medication interaction on file.

No interactions are documented in our data for L-proline. Still, check your exact medications through the tool on this page, and confirm with your own pharmacist or doctor before you start.

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. No medication interactions are currently documented, and some safety-information gaps remain.

L-proline is a building block amino acid, but the evidence for what it does in supplement form isn't clear yet. If you're thinking about taking it for bone health, wound healing, or athletic performance, talk it over with your doctor or pharmacist first — they can weigh whether it's right for you and your health situation.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Oct 22, 2021.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about L-Proline 550 mg, straight from the product label.

Brand BulkSupplements.com
Net contents 300 Gelatin Capsule(s)
Market status On market
Date entered into DSLD Oct 22, 2021
DSLD ID 254725
Product type Amino Acid/protein
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating), Gluten Free, Dairy Free, Sugar Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for L-Proline 550 mg by BulkSupplements.com, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
300
IngredientAmount% DV
L-Proline550 mg--

Other ingredients: Bovine Gelatin Capsules

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements

Clean & pure bulk supplements

Precautions

Warning: This product is not intended for use by those with a serious medical condition or pregnant or lactating women.

Consult your physician before use.

Keep out of reach of children!

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Formulation

Free of: Sugar, soy, dairy, yeast, gluten or additives

Suggested/Recommended/Usage/Directions

Directions: As a dietary supplement, take 1 capsule daily, or as directed by a physician.

Storage

Storage: Keep dry, cool & dark

See for yourself

L-Proline 550 mg by BulkSupplements.com label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

What’s inside

The Ingredients in L-Proline 550 mg by BulkSupplements.com

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container300 Amounts shown are per serving.

L-Proline

No known
interactions
550 mg per serving

Proline is a non-essential amino acid that your body can make on its own and that you also get from protein-rich foods. It is a key building block of...

L-Proline monograph & interactions

Other (inactive) ingredients: Bovine Gelatin Capsules. These complete the product’s ingredient list but are not active constituents.

Interaction report

L-Proline 550 mg by BulkSupplements.com Drug Interactions

We don’t currently list any known drug interactions for the mapped ingredients in L-Proline 550 mg. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.

The maker

Brand information

Manufacturer and brand details for L-Proline 550 mg, from the product label.

BulkSupplements.com

See all BulkSupplements.com products
Name
BulkSupplements.com
Street Address
7511 Eastgate Road
City
Henderson
State
NV
ZipCode
89011
Web Address
BulkSupplements.com
Pharmacist Counseling Corner

L-Proline 550 mg by BulkSupplements.com: Common Questions

Does L-Proline 550 mg by BulkSupplements.com interact with any medications?
We do not currently list a known interaction for the mapped ingredients in L-Proline 550 mg. This does not guarantee none exist, so confirm with your pharmacist.
How can one product interact with so many drugs?
L-Proline 550 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Does L-proline actually help with joint health or wound healing?
The evidence we have isn't strong enough to say. Studies haven't given us reliable data yet to rate whether it works for wound healing, joint or bone problems.
Is L-proline safe to take if I'm pregnant or breastfeeding?
We don't have enough data on supplemental doses during pregnancy or lactation to know either way. Talk with your doctor or pharmacist before taking this while pregnant or nursing — they can give you personalized advice.
What is L-proline and why is it in supplements?
L-proline is an amino acid your body needs to build connective tissue and collagen. Supplements add extra amounts, though we don't yet have strong evidence they work for specific health goals.
Are there any side effects listed for L-proline?
The data we hold doesn't document adverse effects from L-proline. That said, supplement safety at high doses hasn't been well studied, so it's best to stick to recommended amounts unless your doctor advises otherwise.
Can I take this with my other medications?
No interactions are documented for L-proline in our data. Still, check your specific medications using the tool on this page or confirm with your pharmacist before you start.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if L-Proline 550 mg is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

L-Proline 550 mg label
Go deeper

The Full Monographs Behind L-Proline 550 mg’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Sources

Sources & How We Checked

L-Proline 550 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 4 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Proline 4 references
  1. Jennings A, MacGregor A, Spector T, Cassidy A. Amino acid intakes are associated with bone mineral density and prevalence of low bone mass in women: Evidence from discordant monozygotic twins. J Bone Miner Res. 2016;31(2):326-35. PubMed
  2. Gracia-Marco L, Bel-Serrat S, Cuenca-Garcia M, et al. Amino acids intake and physical fitness among adolescents. Amino Acids. 2017;49(6):1041-1052. PubMed
  3. Jamdar J, Rao B, Netke S, et al. Reduction in tibial shaft fracture healing time with essential nutrient supplementation containing ascorbic acid, lysine, and proline. J Altern Complement Med. 2004;10(6):915-6.
  4. Mehl AA, Damião AO, Viana SD, Andretta CP. Hard-to-heal wounds: a randomised trial of an oral proline-containing supplement to aid repair. J Wound Care 2021;30(1):26-31. PubMed

See these in context on the Proline monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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