Krill Oil Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Krill Oil 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
Krill Oil is a dietary supplement by Premium Certified with 1 active ingredient. Its ingredients are commonly taken for heart and cholesterol support, high triglycerides, joint pain and inflammation.Based on those ingredients, 976 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Krill-Syl. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Krill Oil by Premium Certified
Ask about any prescription or over-the-counter medication and we check it for interactions with Krill Oil by Premium Certified — 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 Krill Oil by Premium Certified
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
Premium Certified Krill Oil contains 5 active ingredients. The core actives are omega-3 fatty acids — specifically DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid) — which are the long-chain fats your body uses for heart, brain, and eye health.
These are bundled with astaxanthin, a natural red pigment with antioxidant properties, and phospholipids, which help your body absorb and use the omega-3s. The product also contains two proprietary ingredient blends listed on the label (Krill-Syl and Phospholipid Omega-3 Complex) whose exact breakdown isn't detailed here.
The softgels themselves are made from gelatin and glycerin — standard inactive ingredients that form the capsule and aid swallowing.
Does it work?
Moderate evidence
DHA shows possibly effective evidence for two conditions: preterm labor and high cholesterol (hyperlipidemia). For cognitive function and ADHD, the evidence leans toward possibly ineffective — meaning current data don't support that DHA improves these in supplement form.
Astaxanthin's effectiveness is not well established in the data we hold. We don't have reliable evidence to rate it for age-related cognitive decline, macular degeneration, skin aging, Alzheimer disease, athletic performance, or carpal tunnel syndrome.
How safe is it?
Well-documented data
DHA is generally well tolerated at typical supplement doses for most adults. The most common side effects are belching, fishy aftertaste, loose stools, and nausea — usually mild.
Rare serious concerns include a handful of case reports linking high-dose fish oil to increased bleeding risk. Astaxanthin also appears well tolerated in studies, though long-term safety data are limited; common side effects include abdominal pain, diarrhea, and red-colored stools.
At higher doses (40 mg daily), some people have reported severe stomach pain. For pregnancy, DHA is considered likely safe and is often recommended in prenatal care — but use it only under your doctor's guidance and choose a purified, low-mercury source.
DHA passes into breast milk and is generally acceptable, but confirm the dose and source with your doctor. Astaxanthin, however, lacks enough safety data; the evidence advises against its use during pregnancy and breastfeeding.
Meds to double-check
Moderate interaction found
Before taking Premium Certified Krill Oil, double-check with your doctor or pharmacist if you take blood thinners or antiplatelet drugs (like warfarin or aspirin) — DHA may increase bleeding risk. Also check if you're on blood pressure medications or diabetes drugs, where DHA could add to the effect or interfere with blood sugar control.
If you take medications processed by your liver (a common group), astaxanthin may theoretically lower their levels, though this hasn't been confirmed in humans.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
Premium Certified Krill Oil may be worth considering if you're looking to support heart or cholesterol health with omega-3s, but it's not a slam-dunk for brain function or ADHD. The real caution: if you take blood thinners, blood pressure meds, or diabetes medications, you need to check this product with your own doctor or pharmacist before starting — the DHA and astaxanthin can theoretically affect how those drugs work.
Long-term astaxanthin safety is also less certain, so pregnancy and breastfeeding are situations to discuss with your healthcare provider first.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Apr 23, 2024.
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 Krill Oil, straight from the product label.
| Brand | Premium Certified |
|---|---|
| Net contents | 60 Softgel(s) |
| Market status | On market |
| Date entered into DSLD | Apr 23, 2024 |
| DSLD ID | 308061 |
| Product type | Other Combinations |
| Supplement form | Softgel Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, 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 Krill Oil by Premium Certified, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Omega-3 Fatty Acids | 200 mg | -- |
| Eicosapentaenoic Acid | 260 mg | -- |
| Docosahexaenoic Acid | 160 mg | -- |
| Astaxanthin | 650 mcg | -- |
| Phospholipids | 60 mg | -- |
| Krill-Syl | 2000 mg | -- |
| Phospholipid Omega-3 Complex | 680 mg | -- |
Other ingredients: Gelatin, Glycerin
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.
Suggested/Recommended/Usage/Directions
Suggested use: As a dietary supplement, take two softgels a day. For best results, take one in the morning and one in the afternoon, with meals.
Precautions
Warning: Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition, should consult with a physician before taking this or any other dietary supplement.
Warning: Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition, should consult with a physician before taking this or any other dietary supplement. Keep out of the reach of children.
Do not use this product if outer seal around cap is missing or broken.
Contains shellfish.
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.
Storage
Store at room temperature.
Formulation
All Premium Certified products come with a 100% Premium Guarantee when purchased directly from Premium Certified. If you are not completely satisfied with your purchase, return the unused portion within 90 days for a full refund.
Free of soy, gluten, milk, egg, wheat, peanuts, and artificial sweeteners. Non GMO
Premium grade Highest standards High potency
No GMOs No hormones No soy No preservatives No gluten No coloring
Seals/Symbols
Made in USA Not tested on animals Friend of the Sea Certified Sustainable Seafood MSC www.msc.org
Formula
Premium quality krill oil Refined antarctic krill oil Krill-Syl 2000 mg krill oil
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Krill Oil by Premium Certified 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 Krill Oil by Premium Certified
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Softgel(s) Dosage formSoftgel Capsule Servings per container30 Amounts shown are per serving.
Krill-Syl
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...
Krill-Syl monograph & interactions- › Astaxanthin
- › Phospholipid Omega-3 Complex
Other (inactive) ingredients: Gelatin, Glycerin. These complete the product’s ingredient list but are not active constituents.
Krill Oil by Premium Certified Drug Interactions
HelloPharmacist Interaction Report
Premium Certified Krill Oil carries documented interactions through its omega-3 fatty acids (DHA) and astaxanthin content.
The most serious concern is a moderate risk of increased bleeding with blood thinners (anticoagulants or antiplatelet drugs): DHA may theoretically add to their effect, though most clinical evidence suggests DHA alone doesn't strongly affect clotting — caution is still warranted.
Read the full breakdown — every affected drug type, severity by severity
DHA also interacts moderately with blood pressure medications (antihypertensives), as fish oils can lower blood pressure and might add to these drugs' effects, and with diabetes medications (antidiabetes drugs), where DHA may raise fasting blood sugar and potentially reduce how well these drugs work.
Astaxanthin poses a moderate theoretical risk with certain medications metabolized by your liver's CYP3A4 and CYP2B6 enzymes — astaxanthin may speed up how your liver clears these drugs, making them less effective. This effect has been seen in lab studies but not yet confirmed in people.
Altogether, these interactions span 977 individual medications.
We could not check Eicosapentaenoic Acid, Phospholipids, or the proprietary blends (Krill-Syl and Phospholipid Omega-3 Complex) for interactions because we hold no monograph data for them. Check your exact medications with the tool on this page before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Krill Oil?
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 Krill Oil interact with 976 drugs. Click any drug to see the details.
1 of the 1 ingredient in Krill Oil interact with drugs. Each result below shows which ingredient is responsible. Krill-Syl
Ado-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with Krill Oil — 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 Krill Oil — through 2 ingredients. Tap an ingredient for the detail:
Krill-sylAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Krill-syl + Abciximab interactionOmega-3 Fatty AcidsAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, DHA may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Omega-3 Fatty Acids + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — through 2 ingredients. Tap an ingredient for the detail:
Omega-3 Fatty AcidsAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, DHA may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Omega-3 Fatty Acids + Abrocitinib interactionKrill-sylAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Krill-syl + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Krill Oil — 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 Krill Oil — through 2 ingredients. Tap an ingredient for the detail:
Krill-sylAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking krill oil with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Krill-syl + Acarbose interactionOmega-3 Fatty AcidsAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking DHA with antidiabetes drugs might reduce the effects of these medications.
Read the full Omega-3 Fatty Acids + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Krill Oil — through 1 ingredient. Tap an ingredient for the detail:
Omega-3 Fatty AcidsAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taking DHA with antihypertensive drugs might increase the risk of hypotension.
Read the full Omega-3 Fatty Acids + Acebutolol interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Krill Oil — through 2 ingredients. Tap an ingredient for the detail:
Omega-3 Fatty AcidsAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, DHA may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Omega-3 Fatty Acids + Acenocoumarol interactionKrill-sylAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Krill-syl + Acenocoumarol interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Krill Oil — through 2 ingredients. Tap an ingredient for the detail:
Omega-3 Fatty AcidsAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, DHA may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Omega-3 Fatty Acids + Acetaminophen, Aspirin interactionKrill-sylAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Krill-syl + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Krill Oil — through 3 ingredients. Tap an ingredient for the detail:
Krill-sylAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, krill oil may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Krill-syl + Acetaminophen, Aspirin, Caffeine interactionOmega-3 Fatty AcidsAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, DHA may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Omega-3 Fatty Acids + 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 Krill Oil — 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 interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Krill Oil 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.
Krill-Syl
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 Krill Oil, from the product label.
Premium Certified
See all Premium Certified products- Name
- Premium Certified
- City
- Northbrook
- State
- IL
- ZipCode
- 60062
- Phone Number
- 888-893-1413
- Web Address
- www.premiumcertified.com
Krill Oil by Premium Certified: Common Questions
Does Krill Oil by Premium Certified interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is krill oil safe to take while pregnant?
Can I take this while breastfeeding?
What are the most common side effects?
Will this help my memory or focus?
Does this product have fillers?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Krill Oil 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 Krill Oil’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 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
Krill Oil'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 65 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.
Docosahexaenoic Acid (dha) 49 references
- Akedo I, Ishikawa H, Nakamura T, et al. Three cases with familial adenomatous polyposis diagnosed as having malignant lesions in the course of a long-term trial using docosahexanoic acid (DHA)-concentrated fish oil capsules (abstract). Jpn J Clin Oncol PubMed
- Prisco D, Paniccia R, Bandinelli B, et al. Effect of medium-term supplementation with a moderate dose of n-3 polyunsaturated fatty acids on blood pressure in mild hypertensive patients. Thromb Res 1998;1:105-12.
- Grimsgaard S, Bonaa KH, Hansen JB, Nordoy A. Highly purified eicosapentaenoic acid and docosahexaenoic acid in humans have similar triacylglycerol-lowering effects but divergent effects on serum fatty acids. Am J Clin Nutr 1997;66:649-59.
- Toft I, Bonaa KH, Ingebretsen OC, et al. Effects of n-3 polyunsaturated fatty acids on glucose homeostasis and blood pressure in essential hypertension. A randomized, controlled trial. Ann Intern Med 1995;123:911-8.
- Sacks FM, Hebert P, Appel LJ, et al. Short report: the effect of fish oil on blood pressure and high-density lipoprotein-cholesterol levels in phase I of the trials of hypertension prevention. J Hypertens 1994;12:209-13.
- Vandongen R, Mori TA, Burke V, et al. Effects on blood pressure of omega 3 fats in subjects at increased risk of cardiovascular disease. Hypertension 1993;22:371-9. PubMed
- FDA. Center for Food Safety and Applied Nutrition. Letter regarding dietary supplement health claim for omega-3 fatty acids and coronary heart disease. Available at: http://www.fda.gov/ohrms/dockets/dockets/95s0316/95s-0316-Rpt0272-38-Appendix-D-Reference
- Pedersen HS, Mulvad G, Seidelin KN, et al. N-3 fatty acids as a risk factor for haemorrhagic stroke. Lancet 1999;353:812-3. PubMed
- Ito Y, Suzuki K, Imai H, et al. Effects of polyunsaturated fatty acids on atrophic gastritis in a Japanese population. Cancer Lett 2001;163:171-8. PubMed
- Kris-Ehterton PM, Harris WS, Appel LJ, et al. Fish consumption, fish oil, omega-3 fatty acids, and cardiovascular disease. Circulation 2002;106:2747-57. PubMed
- Woodman RJ, Mori TA, Burke V, et al. Effects of purified eicosapentaenoic and docosahexaenoic acids on glycemic control, blood pressure, and serum lipids in type 2 diabetic patients with treated hypertension. Am J Clin Nutr 2002;76:1007-15.. PubMed
- Marangell LB, Martinez JM, Zboyan HA, et al. A double-blind, placebo-controlled study of the omega-3 fatty acid docosahexaenoic acid in the treatment of major depression. Am J Psychiatry 2003;160:996-8.. PubMed
- Leng GC, Smith FB, Fowkes FG, et al. Relationship between plasma essential fatty acids and smoking, serum lipids, blood pressure and haemostatic and rheological factors. Prostaglandins Leukot Essent Fatty Acids 1994;51:101-8. PubMed
- Nelson GJ, Schmidt PS, Bartolini GL, et al. The effect of dietary docosahexaenoic acid on platelet function, platelet fatty acid composition, and blood coagulation in humans. Lipids 1997;32:1129-36. PubMed
- Wheaton DH, Hoffman DR, Locke KG, et al. Biological safety assessment of docosahexaenoic acid supplementation in a randomized clinical trial for X-linked retinitis pigmentosa. Arch Ophthalmol 2003;121:1269-78. PubMed
- Malcolm CA, McCulloch DL, Montgomery C, et al. Maternal docosahexaenoic acid supplementation during pregnancy and visual evoked potential development in term infants: a double blind, prospective, randomised trial. Arch Dis Child Fetal Neonatal Ed 2003;88: DOI
- Sanjurjo P, Ruiz-Sanz JI, Jimeno P, et al. Supplementation with docosahexaenoic acid in the last trimester of pregnancy: maternal-fetal biochemical findings. J Perinat Med 2004;32:132-6.
- Montgomery C, Speake BK, Cameron A, et al. Maternal docosahexaenoic acid supplementation and fetal accretion. Br J Nutr 2003;90:135-45. DOI
- Lauritzen L, Hoppe C, Straarup EM, Michaelsen KF. Maternal fish oil supplementation in lactation and growth during the first 2.5 years of life. Pediatr Res 2005;58:235-42. PubMed
- Hawkes JS, Bryan DL, Makrides M, et al. A randomized trial of supplementation with docosahexaenoic acid-rich tuna oil and its effects on the human milk cytokines interleukin 1 beta, interleukin 6, and tumor necrosis factor alpha. Am J Clin Nutr 2002;75:75
- Uauy R, Hoffman DR, Mena P, et al. Term infant studies of DHA and ARA supplementation on neurodevelopment: Results of randomized controlled trials. J Pediatr 2003;143:S17-25. PubMed
- Decsi, T., Campoy, C., and Koletzko, B. Effect of N-3 polyunsaturated fatty acid supplementation in pregnancy: the Nuheal trial. Adv.Exp Med Biol 2005;569:109-113. PubMed
- Mori, T. A., Bao, D. Q., Burke, V., Puddey, I. B., and Beilin, L. J. Docosahexaenoic acid but not eicosapentaenoic acid lowers ambulatory blood pressure and heart rate in humans. Hypertension 1999;34(2):253-260. PubMed
- Otto, S. J., van Houwelingen, A. C., and Hornstra, G. The effect of supplementation with docosahexaenoic and arachidonic acid derived from single cell oils on plasma and erythrocyte fatty acids of pregnant women in the second trimester. Prostaglandins Le PubMed
- Helland, I. B., Saugstad, O. D., Smith, L., Saarem, K., Solvoll, K., Ganes, T., and Drevon, C. A. Similar effects on infants of n-3 and n-6 fatty acids supplementation to pregnant and lactating women. Pediatrics 2001;108(5):E82. PubMed
- Nestel, P., Shige, H., Pomeroy, S., Cehun, M., Abbey, M., and Raederstorff, D. The n-3 fatty acids eicosapentaenoic acid and docosahexaenoic acid increase systemic arterial compliance in humans. Am.J.Clin.Nutr. 2002;76(2):326-330. PubMed
- Woodman, R. J., Mori, T. A., Burke, V., Puddey, I. B., Barden, A., Watts, G. F., and Beilin, L. J. Effects of purified eicosapentaenoic acid and docosahexaenoic acid on platelet, fibrinolytic and vascular function in hypertensive type 2 diabetic patients PubMed
- Jensen, C. L., Voigt, R. G., Prager, T. C., Zou, Y. L., Fraley, J. K., Rozelle, J. C., Turcich, M. R., Llorente, A. M., Anderson, R. E., and Heird, W. C. Effects of maternal docosahexaenoic acid intake on visual function and neurodevelopment in breastfed
- Theobald, H. E., Goodall, A. H., Sattar, N., Talbot, D. C., Chowienczyk, P. J., and Sanders, T. A. Low-dose docosahexaenoic acid lowers diastolic blood pressure in middle-aged men and women. J Nutr 2007;137(4):973-978.
- Mischoulon D, Best-Popescu C, Laposata M, et al. A double-blind dose-finding pilot study of docosahexaenoic acid (DHA) for major depressive disorder. Eur Neuropsychopharmacol. 2008;18(9):639-645. PubMed
- Birch EE, Carlson SE, Hoffman DR, et al. The DIAMOND (DHA Intake And Measurement Of Neural Development) Study: a double-masked, randomized controlled clinical trial of the maturation of infant visual acuity as a function of the dietary level of docosahexa
- Carlson SE, Colombo J, Gajewski BJ, Gustafson KM, Mundy D, Yeast J, Georgieff MK, Markley LA, Kerling EH, Shaddy DJ. DHA supplementation and pregnancy outcomes. Am J Clin Nutr. 2013 Apr;97(4):808-15. PubMed
- Escamilla-Nuñez MC, Barraza-Villarreal A, Hernández-Cadena L, Navarro-Olivos E, Sly PD, Romieu I. Omega-3 fatty acid supplementation during pregnancy and respiratory symptoms in children. Chest. 2014 Aug;146(2):373-82. PubMed
- Fu YQ, Zheng JS, Yang B, Li D. Effect of individual omega-3 fatty acids on the risk of prostate cancer: a systematic review and dose-response meta-analysis of prospective cohort studies. J Epidemiol. 2015;25(4):261-74. PubMed
- Imhoff-Kunsch B, Stein AD, Villalpando S, Martorell R, Ramakrishnan U. Docosahexaenoic acid supplementation from mid-pregnancy to parturition influenced breast milk fatty acid concentrations at 1 month postpartum in Mexican women. J Nutr. 2011 Feb;141(2): PubMed
- Judge MP, Cong X, Harel O, Courville AB, Lammi-Keefe CJ. Maternal consumption of a DHA-containing functional food benefits infant sleep patterning: an early neurodevelopmental measure. Early Hum Dev. 2012 Jul;88(7):531-7. PubMed
- Mulder KA, King DJ, Innis SM. Omega-3 fatty acid deficiency in infants before birth identified using a randomized trial of maternal DHA supplementation in pregnancy. PLoS One. 2014 Jan 10;9(1):e83764. PubMed
- Richardson AJ, Burton JR, Sewell RP, Spreckelsen TF, Montgomery P. Docosahexaenoic acid for reading, cognition and behavior in children aged 7-9 years: a randomized, controlled trial (the DOLAB Study). PLoS One. 2012;7(9):e43909. PubMed
- Drugs in Pregnancy and Lactation 2012;25(4);3-4
- FDA announces qualified health claims for omega-3 fatty acids. Available at: https://www.fda.gov/Food/LabelingNutrition/ucm072756.htm. Accessed April 15 2019.
- Breastfeeding and the use of human milk. Section on Breastfeeding. Pediatrics. 2012;129(3):e827-41. PubMed
- Zhang Z, Fulgoni VL, Kris-Etherton PM, Mitmesser SH. Dietary Intakes of EPA and DHA Omega-3 Fatty Acids among US Childbearing-Age and Pregnant Women: An Analysis of NHANES 2001-2014. Nutrients. 2018;10(4). PubMed
- Montgomery P, Spreckelsen TF, Burton A, Burton JR, Richardson AJ. Docosahexaenoic acid for reading, working memory and behavior in UK children aged 7-9: A randomized controlled trial for replication (the DOLAB II study). PLoS One. 2018;13(2):e0192909. PubMed
- Marc I, Piedboeuf B, Lacaze-Masmonteil T, et al. Effect of maternal docosahexaenoic acid supplementation on bronchopulmonary dysplasia-free survival in breastfed preterm infants: A randomized clinical trial. JAMA. 2020;324(2):157-167. PubMed
- Fougère H, Bilodeau JF, Lavoie PM, et al. Docosahexaenoic acid-rich algae oil supplementation on breast milk fatty acid profile of mothers who delivered prematurely: a randomized clinical trial. Sci Rep 2021;11(1):21492. PubMed
- Garmendia ML, Casanello P, Flores M, Kusanovic JP, Uauy R. The effects of a combined intervention (docosahexaenoic acid supplementation and home-based dietary counseling) on metabolic control in obese and overweight pregnant women: the MIGHT study. Am J O PubMed
- Christifano DN, Gustafson KM, Carlson SE, et al. Maternal docosahexaenoic acid exposure needed to achieve maternal-newborn EQ. Nutrients 2022;14(16):3300. PubMed
- Vizzari G, Morniroli D, Alessandretti F, et al. Comparative analysis of docosahexaenoic acid (DHA) content in mother's milk of term and preterm mothers. Nutrients 2022;14(21):4595. PubMed
- Yang Y, Li G, Li F, et al. Impact of DHA from algal oil on the breast milk DHA levels of lactating women: A randomized controlled trial in China. Nutrients 2022;14(16):3410. PubMed
See these in context on the Docosahexaenoic Acid (dha) monograph →
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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