Interactions on record — worth a quick check against your medications. Based on 2 of 3 ingredients. Check your meds →
Dietary supplement

Superior Omega-3 Krill Oil 350 mg Ingredients & Drug Interactions

by Schiff MegaRed

Superior Omega-3 Krill Oil 350 mg label
See full label image
Softgel Capsule Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Superior Omega-3 Krill Oil 350 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

The interaction bottom line Most serious interaction: Moderate

Superior Omega-3 Krill Oil 350 mg is a dietary supplement by Schiff MegaRed with 3 active ingredients. Its ingredients are commonly taken for heart and cholesterol support, high triglycerides, joint pain and inflammation.Based on those ingredients, 838 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Astaxanthin, Krill Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed

Ask about any prescription or over-the-counter medication and we check it for interactions with Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed

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

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Sep 17, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 4 of its 4 active ingredients.
  • “Krill Oil” is listed as a grouped ingredient — the label gives one combined amount (350 mg) without saying how much of each component you get.
  • “Total Omega-3 Fatty Acids” is listed as a grouped ingredient — the label gives one combined amount (90 mg) without saying how much of each component you get.

Schiff MegaRed contains 4 active ingredients centered on krill oil and its components. The product delivers eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) — two omega-3 fatty acids found in krill — plus phospholipids, which are the fat-carrying compounds in krill itself.

The product also contains astaxanthin, a natural antioxidant pigment found in krill that gives it a reddish color. The softgel capsule also holds inactive ingredients: gelatin, glycerin, water, ethyl vanillin (for flavor), and sorbitol.

Does it work?

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

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

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

We hold no effectiveness data for eicosapentaenoic acid, docosahexaenoic acid, or phospholipids on file. For astaxanthin, the evidence we hold is insufficient to rate it for any claimed use — including age-related cognitive decline, age-related macular degeneration, aging skin, Alzheimer disease, athletic performance, or carpal tunnel syndrome.

That doesn't mean it doesn't work; it means the reliable evidence isn't established in our data.

The evidence, ingredient by ingredient Krill Oil Astaxanthin

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

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

Astaxanthin is generally well tolerated in studies, though long-term safety data remain limited. The most common side effects reported in trials were abdominal pain, diarrhea, and red fecal color — the latter a harmless result of the pigment itself.

At lower doses (6 mg daily), a small number of participants reported increased bowel movements and red-colored stool; at much higher doses (40 mg daily), a couple of patients experienced severe stomach or abdominal pain. Safety data in pregnancy and lactation are insufficient — the facts advise against use in both situations until more is known.

Side effects, ingredient by ingredient Krill Oil Astaxanthin

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Astaxanthin.
  • The most serious interaction on file is rated Moderate.
  • For scale: 672 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before you take this product, have your doctor or pharmacist check whether you're on any medications metabolized by the liver enzyme CYP3A4 or CYP2B6. These include certain statins, some blood pressure drugs, some antihistamines, some immunosuppressants, and many others — the interaction tool on this page can search your exact medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This product may appeal to you if you're interested in omega-3 fatty acids from krill and the antioxidant astaxanthin. If you take medications broken down by your liver — especially those processed by CYP3A4 or CYP2B6 enzymes — check your specific drugs with your doctor or pharmacist before starting.

Pregnant or breastfeeding women should talk with their doctor or pharmacist first, since safety data are limited.

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

Assessment coverage: 1 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Feb 26, 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

At a glance

General information

Key facts about Superior Omega-3 Krill Oil 350 mg, straight from the product label.

Brand Schiff MegaRed
Barcode (UPC) 020525104342
Net contents 60 Softgel(s)
Market status On market
Date entered into DSLD Feb 26, 2020
DSLD ID 213028
Product type Other Combinations
Supplement form Softgel Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Softgel(s)
Maximum serving Sizes:
1 Softgel(s)
UPC/BARCODE
020525104342
IngredientAmount% DV
Krill Oil350 mg--
Eicosapentaenoic Acid50 mg--
Docosahexaenoic Acid24 mg--
Phospholipids130 mg--
Cholesterol5 mg1%
Total Omega-3 Fatty Acids90 mg--
Astaxanthin17 mcg--

Other ingredients: Gelatin, Glycerin, Water, Ethyl Vanillin, Sorbitol

Tap any ingredient to jump to its full detail below.

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

Join, earn points & get rewards MegaRed rewards www.megaredrewards.com See cap sticker for details Valid for US residents only.

Eco-friendly. Krill is one of earth’s most abundant and sustainable organisms. The harvest of krill is well below conservative international catch guidelines. MegaRed goes a step further by only sourcing krill from the Antarctic where krill is most abundant. This helps the ecosystem maintain a healthy, sustainable krill population.

Seals/Symbols

MSC-C-52013 Certified sustainable seafood MSC www.msc.org

Schiff Quality Guarantee

Formulation

This product comes from a fishery that has been independently certified to the MSC’s standard for a well-managed and sustainable fishery. www.msc.org Schiff Sure Dissolve softgels are formulated to disintegrate within one hour.

Guaranteed: No added salt (sodium chloride), yeast, wheat, or milk. No added preservatives or artificial colors.

Guaranteed for purity, freshness and labeled potency.

Easily absorbed

3X more pure than regular krill oil

Purity MegaRed with PureTech is 3X more pure than regular krill oil.

Salts and other impurities are removed to provide the purest krill oil on the market.

You can see the difference with a lighter, more translucent softgel.

No fishy aftertaste MegaRed easily mixes in the stomach so it doesn't leave an unpleasant aftertaste that you can experience with fish oil.

Brand IP Statement(s)

Superba is a registered trademark of the Aker Group. Superba

2019 RB Health

rb Health Hygiene Home Patents: www.rb.com/patents

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested Use: Adults take one (1) softgel daily. Consult your healthcare professional for the proper amount for you.

Precautions

Contains shellfish (krill). This product contains sulfites.

Caution: If you are pregnant, breastfeeding, allergic to seafood, have existing medical conditions, taking medications (including blood thinners) or are planning a medical or surgical procedure, consult a healthcare professional before use.

Caution: If you are pregnant, breastfeeding, allergic to seafood, have existing medical conditions, taking medications (including blood thinners) or are planning a medical or surgical procedure, consult a healthcare professional before use.

Keep out of reach of children.

Protected with tamper evident seal. Do not use if seal under cap is broken or missing.

Do not remove freshness pack from bottle.

Storage

Store in a cool, dry place with lid tightly closed.

Formula

Gelatin is derived from bovine sources.

Absorption MegaRed Omega-3 Krill Oil is different. Its Omega-3s are carried in phospholipid form, the same as your body's cell membranes. This allows MegaRed to be easily recognized and utilized, allowing for easy absorption. Just one small MegaRed softgel provides a unique combination of omega-3 fatty acids and the powerful antioxidant astaxanthin to support your health.

MegaRed Omega-3 Krill Oil is the Superior Choice MegaRed Omega-3 Krill Oil Regular Krill Oil Regular Fish Oil Source of vital Omega-3 fatty acids check check check Purest Krill Oil (3X more pure) check In phospholipid form for easy absorption check check No fishy aftertaste check check Just one small softgel check check Contains powerful antioxidant astaxanthin check check

Total Omega-3 Fatty Acids of 90 mg

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.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed label

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

Superior Omega-3 Krill Oil 350 mg label

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)
What’s inside

The Ingredients in Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Softgel(s) Dosage formSoftgel Capsule 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.

Krill Oil

Interacts with
208 drugs
350 mg per serving

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 Oil monograph & interactions
  • › Total Omega-3 Fatty Acids

Phospholipids

130 mg per serving

Astaxanthin

Interacts with
671 drugs
17 mcg per serving Form: Krill Oil

Astaxanthin is a reddish carotenoid pigment with strong antioxidant activity in the lab, and it is widely promoted for skin, eye, heart, and exercise...

Astaxanthin monograph & interactions

Other (inactive) ingredients: Gelatin, Glycerin, Water, Ethyl Vanillin, Sorbitol. These complete the product’s ingredient list but are not active constituents.

Interaction report

Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed Drug Interactions

Want to check YOUR meds against Superior Omega-3 Krill Oil 350 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 checker
838Drugs
838 Moderate

Ingredients driving the most interactions

Astaxanthin 671
Krill Oil 208

Individual Drug Interactions

The ingredients in Superior Omega-3 Krill Oil 350 mg interact with 838 drugs. Click any drug to see the details.

2 of the 3 ingredients in Superior Omega-3 Krill Oil 350 mg interact with drugs. Each result below shows which ingredient is responsible. Astaxanthin Krill Oil

Each ingredient & the kinds of drugs it affects

For each ingredient in Superior Omega-3 Krill Oil 350 mg with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Astaxanthin2 drug types · 671 drugs

Cytochrome P450 2B6 (Cyp2B6) Substrates

Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP2B6.
In vitro research shows that astaxanthin induces cytochrome CYP2B6 enzyme activity in human hepatocytes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
In vitro research shows that astaxanthin induces CYP3A4 enzyme activity in human hepatocytes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Astaxanthin full monograph & interactions

Krill Oil2 drug types · 208 drugs

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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence B
Krill Oil full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Superior Omega-3 Krill Oil 350 mg, from the product label.

Schiff MegaRed

See all Schiff MegaRed products
Name
RB Health (US) LLC
City
Parsippany
State
NJ
ZipCode
07054-0224
Phone Number
1-800-526-6251
Web Address
www.megared.com
Pharmacist Counseling Corner

Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed: Common Questions

Does Superior Omega-3 Krill Oil 350 mg by Schiff MegaRed interact with any medications?
Yes. Based on its ingredients, Superior Omega-3 Krill Oil 350 mg has a known interaction with 838 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Superior Omega-3 Krill Oil 350 mg contains 3 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What does astaxanthin in this product actually do?
Astaxanthin is an antioxidant — a natural pigment that gives krill its reddish color. We don't have reliable evidence yet that it works for any specific health condition, though some researchers have studied it for brain aging, eye health, and skin. That doesn't mean it's inactive — just that the evidence on file isn't conclusive.
Is this product safe to take while I'm pregnant?
The safety data aren't sufficient to know either way, so the facts advise against it during pregnancy. Talk with your doctor or pharmacist about whether this product is right for you in your situation.
What are the most common side effects?
Astaxanthin is generally well tolerated, but some people report abdominal pain, diarrhea, and red-colored stool — the red color is harmless and just the pigment passing through. At very high doses, a couple of people had severe stomach pain, though typical doses are much lower.
Can I breastfeed while taking this product?
There isn't enough safety data to know, so the facts advise against it while breastfeeding. Check with your doctor or pharmacist to decide what's best for you and your baby.
What's the difference between the omega-3s in krill oil and the ones in fish oil?
Both contain EPA and DHA — the same omega-3 fatty acids — but krill oil delivers them packaged with phospholipids, which are the natural fat structures in krill itself. We don't have interaction or effectiveness data on file to compare the two directly.

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

Not sure if Superior Omega-3 Krill Oil 350 mg is safe with your meds?

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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.

Superior Omega-3 Krill Oil 350 mg label
Go deeper

The Full Monographs Behind Superior Omega-3 Krill Oil 350 mg’s Ingredients

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

Herb & supplement monograph

Krill Oil

Interacts with 208 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 triglycerides and supporting heart health, but t...

Read the full Krill Oil monograph → Herb & supplement monograph

Astaxanthin

Interacts with 671 drugs

Astaxanthin 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

Sources & How We Checked

Superior Omega-3 Krill Oil 350 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

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

The 16 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.

Krill Oil 13 references
  1. Leaf A. On the reanalysis of the GISSI-Prevenzione. Circulation 2002;105:1874-5. PubMed
  2. Connor WE. n-3 Fatty acids from fish and fish oil: panacea or nostrum? Am J Clin Nutr 2001;74;415-6. PubMed
  3. 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
  4. 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.
  5. 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.
  6. 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
  7. 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
  8. 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
  9. 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.
  10. 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
  11. 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
  12. 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
  13. 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

See these in context on the Krill Oil monograph →

Astaxanthin 3 references
  1. 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
  2. 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
  3. 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

See these in context on the Astaxanthin monograph →

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

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

© 2021 Therapeutic Research Center, LLC

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