Odorless Krill Oil 500 mg Ingredients & Drug Interactions
by Natrol
What is this page for?
First and foremost: checking Odorless Krill Oil 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
Odorless Krill Oil 500 mg is a dietary supplement by Natrol with 2 active ingredients. Its ingredients are commonly taken for heart and cholesterol support, high triglycerides, joint pain and inflammation.Based on those ingredients, 848 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Superba Krill Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Odorless Krill Oil 500 mg by Natrol
Ask about any prescription or over-the-counter medication and we check it for interactions with Odorless Krill Oil 500 mg by Natrol — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Odorless Krill Oil 500 mg by Natrol
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
Natrol's Odorless Krill Oil contains 7 active ingredients: three fatty acids (eicosapentaenoic acid and docosahexaenoic acid, which are omega-3s, plus omega-6 and omega-9 fatty acids), phospholipids, choline, and astaxanthin, delivered in a base of krill oil. The product also contains inactive ingredients — gelatin, glycerin, and water — that serve as the capsule and vehicle.
Krill oil is a concentrated source of omega-3 fatty acids and phospholipids. Choline supports brain function and other body processes.
Astaxanthin is a carotenoid antioxidant found in marine organisms.
Does it work?
Not established
The evidence for what this product does is thin. We hold no effectiveness ratings for krill oil itself, the main omega-3 fatty acids it contains, or phospholipids.
Choline has been studied for athletic performance (possibly ineffective), age-related cognitive decline, Alzheimer disease, hay fever, bronchitis, and liver damage from parenteral nutrition — but the evidence is either insufficient or points to it not working. Astaxanthin has been studied for similar conditions — cognitive decline, macular degeneration, aging skin, Alzheimer disease, athletic performance, and carpal tunnel — and again the evidence is insufficient for most claims.
Omega-6 fatty acids appear possibly ineffective for lowering cholesterol (hyperlipidemia), heart disease, and multiple sclerosis.
How safe is it?
Well-documented data
Choline is generally well tolerated at food-level amounts and likely safe in pregnancy and while breastfeeding, though you should use supplement doses only as your doctor advises during those periods. At doses above 3.5 grams daily, choline can cause fishy body odor, and at very high doses (9 grams or more) it may cause diarrhea, nausea, sweating, and vomiting.
Astaxanthin appears well tolerated in studies, though long-term safety data are limited. In trial doses, it has caused abdominal pain, diarrhea, and red-colored stools in some participants.
The safety notes advise against astaxanthin during pregnancy and while breastfeeding because there isn't enough data to know if it's safe. Omega-6 from normal food is fine, but supplements of it are less well established in safety.
The data notes that a high ratio of omega-6 to omega-3 in your diet may increase heart disease risk and that high omega-6 levels have been linked to depression and some cancers in population studies — talk with your doctor before starting, especially if you have heart disease.
Meds to double-check
Moderate interaction found
Check with your doctor or pharmacist before taking this product if you take atropine (a drug sometimes used for eye exams or certain other conditions) — choline may reduce how it works. Additionally, if you take any medication broken down by your liver through the CYP3A4 or CYP2B6 pathways (a large number of common drugs), astaxanthin may theoretically lower its levels, though this has not been proven in humans.
Use the medication search tool on this page to verify your specific drugs.
The bottom line
Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.
This krill oil product is a source of omega-3 and other fatty acids, but the evidence that it works for any specific condition is not established in our data. The main safety concern is that we could not check the core fatty acid ingredients for drug interactions, and the liver-enzyme interactions from astaxanthin could affect many medications.
Before starting, search your exact medications in the tool on this page, and talk with your doctor or pharmacist — particularly if you take drugs processed through your liver, manage heart disease, or are pregnant or breastfeeding.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 7 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 21, 2017.
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 Odorless Krill Oil 500 mg, straight from the product label.
| Brand | Natrol |
|---|---|
| Barcode (UPC) | 047469071011 |
| Net contents | 30 Softgel(s) |
| Market status | On market |
| Date entered into DSLD | Sep 21, 2017 |
| DSLD ID | 78135 |
| Product type | Other Combinations |
| Supplement form | Softgel Capsule |
| Dietary claims / uses | All Other, Qualified Health, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Dairy 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 Odorless Krill Oil 500 mg by Natrol, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Calories from Fat | 5 Kcal | -- |
| Eicosapentaenoic Acid | 60 mg | -- |
| Docosahexaenoic Acid | 27.5 mg | -- |
| Phospholipids | 200 mg | -- |
| Cholesterol | 10 mg | 3.33% |
| Omega-6 Fatty Acids | 10 mg | -- |
| Omega-9 Fatty Acids | 40 mg | -- |
| Total Omega-3 Fatty Acids | 110 mg | -- |
| Total Calories | 6 Kcal | -- |
| Choline | 25 mg | -- |
| Astaxanthin | 50 mcg | -- |
| Superba Krill Oil | 500 mg | -- |
| Total Fat | 0.5 Gram(s) | 1% |
Other ingredients: Gelatin, Glycerin, Water
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.
Brand IP Statement(s)
Natrol Odorless Krill Oil is a unique source of cardioprotective omega-3 fatty acids that offers support for healthy cholesterol within the normal range.
Certified sustainably sourced, Natrol Odorless Krill Oil is harvested from Antarctic krill in an eco-friendly way.
Superba & device and Eco-Harvesting are trademarks of the Aker Group
Formula
Krill Oil contains phospholipids to support enhanced omega-3 fatty acid absorption and astaxanthin for preservation and antioxidant support.
Contains crustacean shellfish
Formulation
No milk, egg, fish, tree nuts, wheat, peanuts, soybeans, yeast, glutens, corn, artificial colors or flavors, preservatives
General Statements
Supportive but not conclusive research shows consumption of EPA and DHA Omega-3 fatty acids may reduce the risk of coronery heart disease.
Actual size
Improved formula! No odor or fishy aftertaste May reduce the risk of coronary heart disease Sustainably sourced
Precautions
Consult your healthcare professional prior to use if you have or suspect a medical condition, or are taking prescription drugs, or are pregnant or lactating.
People with allergies to shellfish should consult their healthcare professional before taking this product.
Keep out of reach of children.
Contains crustacean shellfish
Storage
Store in a cool, dry place.
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.
General
ITEM: 7101.911 F: 3003256 L: 2008595-16244
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Directions: Take 1 softgel, one to two times daily, with a meal.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Odorless Krill Oil 500 mg by Natrol 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 Odorless Krill Oil 500 mg by Natrol
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Softgel(s) Dosage formSoftgel Capsule Servings per container30 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Total Calories
Superba Krill Oil
Interacts with208 drugs
Krill oil is a source of omega-3 fatty acids (EPA and DHA) bound to phospholipids, which may help absorption. It is most studied for lowering triglyce...
Superba Krill Oil monograph & interactions- › Phospholipids
- › Omega-6 Fatty Acids
- › Omega-9 Fatty Acids
- › Total Omega-3 Fatty Acids
- › Choline
- › Astaxanthin
Other (inactive) ingredients: Gelatin, Glycerin, Water. These complete the product’s ingredient list but are not active constituents.
Odorless Krill Oil 500 mg by Natrol Drug Interactions
HelloPharmacist Interaction Report
Natrol's Odorless Krill Oil 500 mg contains several ingredients we could not check for interactions — eicosapentaenoic acid, docosahexaenoic acid, phospholipids, omega-9 fatty acids, and the krill oil blend itself — so we cannot rule out interactions there.
However, the two ingredients we did check are choline and astaxanthin. Choline has one minor interaction: it may theoretically decrease how atropine works in the brain, though this has not been observed in humans.
Astaxanthin carries moderate interactions — it may theoretically reduce levels of drugs broken down by your liver through two enzyme pathways (CYP3A4 and CYP2B6 substrates), although again this is based on lab work, not human studies.
Read the full breakdown — every affected drug type, severity by severity
Omega-6 fatty acids in this product are checked with no interactions documented. That said, the safety notes on omega-6 supplements flag that taking them without balancing omega-3 intake may carry health concerns, and you should talk with your doctor before starting a supplement form, especially if you're managing heart disease or cholesterol.
Because we could not check the main fatty acid components of this krill oil, we cannot give you a complete picture. Use the medication checker on this page to search your exact drugs — particularly any that your liver breaks down — before starting.
Altogether, these interactions span 682 individual medications.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Odorless Krill Oil 500 mg?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Odorless Krill Oil 500 mg interact with 848 drugs. Click any drug to see the details.
1 of the 2 ingredients in Odorless Krill Oil 500 mg interact with drugs. Each result below shows which ingredient is responsible. Superba Krill Oil
Ado-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Ado-trastuzumab Emtansine interactionAbciximabReoPro
How Abciximab interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Superba Krill OilAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Superba Krill Oil + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Superba Krill OilAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Superba Krill Oil + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acalabrutinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Superba Krill OilAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking krill oil with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Superba Krill Oil + Acarbose interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Superba Krill OilAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Superba Krill Oil + Acenocoumarol interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
Superba Krill OilAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Superba Krill Oil + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Odorless Krill Oil 500 mg — through 2 ingredients. Tap an ingredient for the detail:
Superba Krill OilAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Superba Krill Oil + Acetaminophen, Aspirin, Caffeine interactionAstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Odorless Krill Oil 500 mg — through 1 ingredient. Tap an ingredient for the detail:
AstaxanthinCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
Read the full Astaxanthin + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Odorless Krill Oil 500 mg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Superba Krill Oil
Anticoagulant/Antiplatelet Drugs
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Taking high doses of omega-3 fatty acids from fish oil can modestly decrease platelet aggregation. Since krill oil also contains these fatty acids, taking high doses of krill oil might also inhibit platelet aggregation. Theoretically, taking high doses of krill oil with antiplatelet or anticoagulant drugs might increase the risk of bleeding. However, the omega-3 content of krill oil is much lower than that of fish oil.
Antidiabetes Drugs
Theoretically, taking krill oil with antidiabetes drugs might increase the risk of hypoglycemia.
Some research in animals and humans shows that krill oil might lower blood glucose levels. However, a small study shows that taking krill oil does not reduce blood glucose levels in patients with type 2 diabetes, most of whom were taking antidiabetes drugs.
Brand information
Manufacturer and brand details for Odorless Krill Oil 500 mg, from the product label.
Natrol
See all Natrol products- Name
- Natrol, LLC.
- City
- Chatsworth
- State
- CA
- ZipCode
- 91311
- Phone Number
- 1-800-262-8765
- Web Address
- www.natrol.com
Odorless Krill Oil 500 mg by Natrol: Common Questions
Does Odorless Krill Oil 500 mg by Natrol interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What is krill oil and why is it in this product?
Is it safe to take this while I'm pregnant?
Is it safe to take while breastfeeding?
Can this cause side effects?
Why is it 'odorless'?
Will this help my cholesterol or heart health?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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 Odorless Krill Oil 500 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Krill Oil
Interacts with 208 drugsKrill oil is a source of omega-3 fatty acids (EPA and DHA) bound to phospholipids, which may help absorption. It is most studied for lowering triglycerides and supporting heart health, but t...
Read the full Krill Oil monograph → Herb & supplement monographOmega-6 Fatty Acids
Omega-6 fatty acids are essential fats your body needs but cannot make on its own, and most people get plenty from everyday foods like vegetable oils, nuts, and seeds. Supplements such as ev...
Read the full Omega-6 Fatty Acids monograph → Herb & supplement monographCholine
Interacts with 16 drugsCholine is an essential nutrient your body needs for liver function, brain health, and nerve signaling, and many people get enough from foods like eggs, meat, and fish. Supplements may help...
Read the full Choline monograph → Herb & supplement monographAstaxanthin
Interacts with 671 drugsAstaxanthin is a reddish carotenoid pigment with strong antioxidant activity in the lab, and it is widely promoted for skin, eye, heart, and exercise benefits. Early human studies are promis...
Read the full Astaxanthin monograph →Sources & How We Checked
Odorless Krill Oil 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 50 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.
Omega-6 Fatty Acids 20 references
- Godley PA. Essential fatty acid consumption and risk of breast cancer. Breast Cancer Res Treat 1995;35:91-5. PubMed
- Newcomer LM, King IB, Wicklund KG, Stanford JL. The association of fatty acids with prostate cancer risk. Prostate 2001;47:262-8. DOI
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate. Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. Washington, DC: National Academy Press, 2005. Available at: http://www.nap.edu/books/03 DOI
- Colter, A. L., Cutler, C., and Meckling, K. A. Fatty acid status and behavioural symptoms of attention deficit hyperactivity disorder in adolescents: a case-control study. Nutr J 2008;7:8. PubMed
- Yamada, T., Strong, J. P., Ishii, T., Ueno, T., Koyama, M., Wagayama, H., Shimizu, A., Sakai, T., Malcom, G. T., and Guzman, M. A. Atherosclerosis and omega-3 fatty acids in the populations of a fishing village and a farming village in Japan. Atheroscler
- Conklin, S. M., Manuck, S. B., Yao, J. K., Flory, J. D., Hibbeln, J. R., and Muldoon, M. F. High omega-6 and low omega-3 fatty acids are associated with depressive symptoms and neuroticism. Psychosom.Med. 2007;69(9):932-934.
- Richardson, A. J., Cyhlarova, E., and Ross, M. A. Omega-3 and omega-6 fatty acid concentrations in red blood cell membranes relate to schizotypal traits in healthy adults. Prostaglandins Leukot.Essent.Fatty Acids 2003;69(6):461-466. PubMed
- Assies, J., Lok, A., Bockting, C. L., Weverling, G. J., Lieverse, R., Visser, I., Abeling, N. G., Duran, M., and Schene, A. H. Fatty acids and homocysteine levels in patients with recurrent depression: an explorative pilot study. Prostaglandins Leukot.Es PubMed
- Chiplonkar, S. A., Agte, V. V., Tarwadi, K. V., Paknikar, K. M., and Diwate, U. P. Micronutrient deficiencies as predisposing factors for hypertension in lacto-vegetarian Indian adults. J Am Coll.Nutr 2004;23(3):239-247. PubMed
- Mamalakis, G., Kiriakakis, M., Tsibinos, G., Hatzis, C., Flouri, S., Mantzoros, C., and Kafatos, A. Depression and serum adiponectin and adipose omega-3 and omega-6 fatty acids in adolescents. Pharmacol.Biochem.Behav. 2006;85(2):474-479. PubMed
- Okuyama, H., Ichikawa, Y., Sun, Y., Hamazaki, T., and Lands, W. E. Cancers common in the USA are stimulated by omega 6 fatty acids and large amounts of animal fats, but suppressed by omega 3 fatty acids and cholesterol. World Rev Nutr Diet. 2007;96:143-1
- Martinez-Ramirez, M. J., Palma, S., Martinez-Gonzalez, M. A., Delgado-Martinez, A. D., de la Fuente, C., and Delgado-Rodriguez, M. Dietary fat intake and the risk of osteoporotic fractures in the elderly. Eur.J Clin Nutr 2007;61(9):1114-1120. PubMed
- Sonestedt, E., Gullberg, B., and Wirfalt, E. Both food habit change in the past and obesity status may influence the association between dietary factors and postmenopausal breast cancer. Public Health Nutr 2007;10(8):769-779. PubMed
- Simopoulos, A. P. The omega-6/omega-3 fatty acid ratio, genetic variation, and cardiovascular disease. Asia Pac.J Clin Nutr 2008;17 Suppl 1:131-134.
- Harris, W. S., Mozaffarian, D., Rimm, E., Kris-Etherton, P., Rudel, L. L., Appel, L. J., Engler, M. M., Engler, M. B., and Sacks, F. Omega-6 fatty acids and risk for cardiovascular disease: a science advisory from the American Heart Association Nutrition DOI
- Godley, P. A., Campbell, M. K., Gallagher, P., Martinson, F. E., Mohler, J. L., and Sandler, R. S. Biomarkers of essential fatty acid consumption and risk of prostatic carcinoma. Cancer Epidemiol.Biomarkers Prev. 1996;5(11):889-895.
- Lee E, Kim H, Kim H, Ha EH, Chang N. Association of maternal omega-6 fatty acid intake with infant birth outcomes: Korean Mothers and Children's Environmental Health (MOCEH). Nutr J 2018;17(1):47. PubMed
- Pawelczyk T, Trafalska E, Pawelczyk A, Kotlicka-Antczak M. Differences in omega-3 and omega-6 polyunsaturated fatty acid consumption in people at ultra-high risk of psychosis, first-episode schizophrenia, and in healthy controls. Early Interv Psychiatry 2
- Gardner KG, Gebretsadik T, Hartman TJ, et al. Prenatal omega-3 and omega-6 polyunsaturated fatty acids and childhood atopic dermatitis. J Allergy Clin Immunol Pract. 2020;8(3):937-944. PubMed
- Luo J, Ge H, Sun J, Hao K, Yao W, Zhang D. Associations of dietary ?-3, ?-6 fatty acids consumption with sleep disorders and sleep duration among adults. Nutrients 2021;13(5):1475. PubMed
Choline 14 references
- Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
- Cho E, Willett WC, Colditz GA, et al. Dietary choline and betaine and the risk of distal colorectal adenoma in women. J Natl Cancer Inst 2007;99:1224-31. PubMed
- Schmidt, C., Abicht, A., Krampfl, K., Voss, W., Stucka, R., Mildner, G., Petrova, S., Schara, U., Mortier, W., Bufler, J., Huebner, A., and Lochmuller, H. Congenital myasthenic syndrome due to a novel missense mutation in the gene encoding choline acetyl
- Tamminga, C., Smith, R. C., Chang, S., Haraszti, J. S., and Davis, J. M. Depression associated with oral choline. Lancet 10-23-1976;2(7991):905. PubMed
- Wood, J. L. and Allison, R. G. Effects of consumption of choline and lecithin on neurological and cardiovascular systems. Fed.Proc. 1982;41(14):3015-3021.
- Growdon, J. H. and Gelenberg, A. J. Choline and lecithin administration to patients with tardive dyskinesia. Trans.Am.Neurol.Assoc. 1978;103:95-99.
- Smith, C. M., Swash, M., Exton-Smith, A. N., Phillips, M. J., Overstall, P. W., Piper, M. E., and Bailey, M. R. Choline therapy in Alzheimer's disease. Lancet 8-5-1978;2(8084):318. PubMed
- Morrison, L. M. and W. F. Gonzales. Choline in coronary atherosclerosis. Amer.Heart J. 1950;39:729.
- Christie, J. G. Blackburn 1. M. Glen A. I. M. Zeisel S. Shering A. & Yates C. M. Effects of choline and lecithin on CSF choline levels and on cognitive functioning in patients with presenile dementia of the Alzheimer type. Nutrition and the brain 1979;5
- Sidhu N, Davies S, Nadarajah A, et al. Oral choline supplementation for postoperative pain. Br J Anaesth 2013;111(2):249-55. PubMed
- Wozniak JR, Fuglestad AJ, Eckerle JK, et al. Choline supplementation in children with fetal alcohol spectrum disorders has high feasibility and tolerability. Nutr Res. 2013;33(11):897-904. PubMed
- Wozniak JR, Fuglestad AJ, Eckerle JK, et al. Choline supplementation in children with fetal alcohol disorders: a randomized, double-blind, placebo-controlled trial. Am J Clin Nutr. 2015;102(5): 1113-25.
- Ross RG, Hunter SK, McCarthy L, et al. Perinatal choline effects on neonatal pathophysiology related to later schizophrenia risk. Am J Psychiatry. 2013;170(3):290-8. PubMed
- Food and Nutrition Board, Institute of Medicine. Choline. Dietary Reference Intakes: Thiamin, Riboflavin, Niacin, Vitamin B-6, Vitamin B-12, Pantothenic Acid, Biotin, and Choline. Washington D.C.: National Academy Press; 1998:390-422.
Astaxanthin 3 references
- Kupcinskas L, Lafolie P, Lignell A, et al. Efficacy of the natural antioxidant astaxanthin in the treatment of functional dyspepsia in patients with or without Helicobacter pylori infection: A prospective, randomized, double blind, and placebo-controlled
- Kistler, A., Liechti, H., Pichard, L., Wolz, E., Oesterhelt, G., Hayes, A., and Maurel, P. Metabolism and CYP-inducer properties of astaxanthin in man and primary human hepatocytes. Arch.Toxicol. 2002;75(11-12):665-675. PubMed
- Choi HD, Youn YK, Shin WG. Positive effects of astaxanthin on lipid profiles and oxidative stress in overweight subjects. Plant Foods Hum Nutr. 2011;66:363-369. PubMed
Krill Oil 13 references
- Leaf A. On the reanalysis of the GISSI-Prevenzione. Circulation 2002;105:1874-5. PubMed
- Connor WE. n-3 Fatty acids from fish and fish oil: panacea or nostrum? Am J Clin Nutr 2001;74;415-6. PubMed
- Calder PC. N-3 polyunsaturated fatty acids, inflammation and immunity: pouring oil on troubled waters or another fishy tale? Nutr Res 2001;21:309-41. DOI
- Bunea R, El Farrah K, Deutsch L. Evaluation of the effects of Neptune Krill Oil on the clinical course of hyperlipidemia. Altern Med Rev 2004;9:420-8.
- Sampalis F, Bunea R, Pelland MF, et al. Evaluation of the effects of Neptune Krill Oil on the management of premenstrual syndrome and dysmenorrhea. Altern Med Rev 2003;8:171-9.
- Harris WS, Miller M, Tighe AP, et al. Omega-3 fatty acids and coronary heart disease risk: clinical and mechanistic perspectives. Atherosclerosis 2008;197:12-24. PubMed
- Tandy S, Chung RW, Wat E, et al. Dietary krill oil supplementation reduces hepatic steatosis, glycemia, and hypercholesterolemia in high-fat-fed mice. J Agric Food Chem 10-14-2009;57:9339-45. PubMed
- Maki, K. C., Reeves, M. S., Farmer, M., Griinari, M., Berge, K., Vik, H., Hubacher, R., and Rains, T. M. Krill oil supplementation increases plasma concentrations of eicosapentaenoic and docosahexaenoic acids in overweight and obese men and women. Nutr.R PubMed
- Albert BB, Derraik JG, Brennan CM, et al. Supplementation with a blend of krill and salmon oil is associated with increased metabolic risk in overweight men. Am J Clin Nutr 2015;102(1):49-57.
- Berge K, Musa-Veloso K, Harwood M, Hoem N, Burri L. Krill oil supplementation lowers serum triglycerides without increasing low-density lipoprotein cholesterol in adults with borderline high or high triglyceride levels. Nutr Res 2014;34(2):126-33. PubMed
- Lobraico JM, DiLello LC, Butler AD, Cordisco ME, Petrini JR, Ahmadi R. Effects of krill oil on endothelial function and other cardiovascular risk factors in participants with type 2 diabetes, a randomized controlled trial. BMJ Open Diabetes Res Care. 2015 PubMed
- van der Wurff ISM, von Schacky C, Bergeland T, Zeegers MP, Kirschner PA, de Groot RHM. Krill oil supplementation's effect on school grades in typically developing adolescents. Prostaglandins Leukot Essent Fatty Acids 2023;191:102553. PubMed
- van der Wurff ISM, von Schacky C, Bergeland T, et al. Effect of 1 year krill oil supplementation on cognitive achievement of Dutch adolescents: A double-blind randomized controlled trial. Nutrients. 2019;11(6):1230. PubMed
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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.
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