L-Ornithine 500 mg Ingredients & Drug Interactions
by Solgar
What is this page for?
First and foremost: checking L-Ornithine 500 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
L-Ornithine 500 mg is a dietary supplement by Solgar with 1 active ingredient. Its ingredients are commonly taken for athletic performance and recovery, reducing fatigue, sleep and stress support.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-Ornithine 500 mg by Solgar
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.
What’s inside
Full disclosure
This product contains one active ingredient: L-Ornithine, an amino acid, at 500 mg per capsule. The rest — vegetable cellulose, microcrystalline cellulose, vegetable magnesium stearate, silica, and stearic acid — are inactive ingredients that make up the capsule and help it hold together.
Does it work?
Moderate evidence
L-Ornithine is possibly effective for athletic performance. For other uses listed — dry skin, insomnia, and periodontitis (gum inflammation) — the evidence isn't strong enough to say whether it works.
If you're taking it for one of those reasons, the data we hold doesn't support a clear benefit.
How safe is it?
Some data gaps
L-Ornithine is generally well tolerated in the short term, but we don't have much data on what happens if you take it for years. The safety data advises against use during pregnancy and breastfeeding because there isn't enough information to know it's safe.
If you're pregnant, breastfeeding, or planning either, talk with your doctor or pharmacist before starting it.
Meds to double-check
No known interactions
No interactions are documented in our data for L-Ornithine. Still, run your medications through the tool on this page and talk with your doctor or pharmacist before adding any new supplement to your routine.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. No medication interactions are currently documented, and some safety-information gaps remain.
If you're an athlete looking to support performance, L-Ornithine may be worth a try. Anyone pregnant, breastfeeding, or taking it long-term should check in with their own doctor or pharmacist first.
No interactions are documented for this ingredient, but that's not a guarantee none exist — your healthcare provider knows your full picture best.
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 Apr 23, 2020.
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
General information
Key facts about L-Ornithine 500 mg, straight from the product label.
| Brand | Solgar |
|---|---|
| Barcode (UPC) | 033984020603 |
| Net contents | 50 Vegetable Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Apr 23, 2020 |
| DSLD ID | 218572 |
| Product type | Amino Acid/protein |
| Supplement form | Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Vegetarian, Adult (18 - 50 Years), Kosher, Gluten Free, Dairy Free, Sugar Free |
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-Ornithine 500 mg by Solgar, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Ornithine | 500 mg | -- |
Other ingredients: Vegetable Cellulose, Microcrystalline Cellulose, Vegetable Magnesium Stearate, Silica, Stearic Acid
Tap any ingredient to jump to its full detail below.
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.
Formula
L-Ornithine is an intermediate compound involved in the synthesis of L-Arginine in the body. This formulation provides Free Form L-Ornithine to promote optimal absorption and assimilation.
Solgar's KOF-K certification #K-1250
FDA Disclaimer Statement
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
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.
Brand IP Statement(s)
2012 Solgar, Inc.
General Statements
Solgar since 1947
Formulation
Free form
Gluten, wheat & dairy free
Suitable for vegetarians
Free of: Gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, preservatives and color.
Seals/Symbols
K Parve (Kosher)
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Suggested Use: As a dietary supplement for adults, take one (1) vegetable capsule up to two times daily, between meals, or as directed by a healthcare practitioner.
Precautions
If you are pregnant, nursing, taking any medications or have any medical condition, please consult your healthcare practitioner before taking any dietary supplement.
Discontinue use and consult your healthcare practitioner if any adverse reactions occur.
Keep out of reach of children.
Do not use if outer bottle seal is missing or damaged.
Storage
Store at room temperature.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
L-Ornithine 500 mg by Solgar label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in L-Ornithine 500 mg by Solgar
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Vegetarian Capsule(s) Dosage formCapsule Amounts shown are per serving.
L-Ornithine
No knowninteractions
Ornithine is a non-essential amino acid your body makes naturally as part of the urea cycle, which helps remove ammonia. It is sold as a supplement fo...
L-Ornithine monograph & interactionsOther (inactive) ingredients: Vegetable Cellulose, Microcrystalline Cellulose, Vegetable Magnesium Stearate, Silica, Stearic Acid. These complete the product’s ingredient list but are not active constituents.
L-Ornithine 500 mg by Solgar Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in L-Ornithine 500 mg. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.
Brand information
Manufacturer and brand details for L-Ornithine 500 mg, from the product label.
Solgar
See all Solgar products- Name
- Solgar, Inc.
- Street Address
- 500 Willow Tree Road
- City
- Leonia
- State
- NJ
- ZipCode
- 07605
- Phone Number
- 1-877-765-4274
- Web Address
- www.solgar.com
L-Ornithine 500 mg by Solgar: Common Questions
Does L-Ornithine 500 mg by Solgar interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Does L-Ornithine actually work for athletic performance?
Can I take this while I'm pregnant?
Can I take this while breastfeeding?
What are the side effects?
Is this just one ingredient?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if L-Ornithine 500 mg is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind L-Ornithine 500 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
L-Ornithine 500 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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 1 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.
Ornithine 1 reference
- Dietary Supplements: What You Need to Know — NIH Office of Dietary Supplements Source
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