Interactions on record — worth a quick check against your medications. Based on 1 of 4 ingredients. Check your meds →
Dietary supplement

Max DHA Krill Oil Ingredients & Drug Interactions

by NS Natural Stacks

Max DHA Krill Oil label
See full label image
Softgel Capsule Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Max DHA 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

The interaction bottom line Most serious interaction: Moderate

Max DHA Krill Oil is a dietary supplement by NS Natural Stacks with 4 active ingredients. Its ingredients are commonly taken for antioxidant support, skin health and aging, eye health.Based on those ingredients, 671 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Esterified Astaxanthin. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Max DHA Krill Oil by NS Natural Stacks

Ask about any prescription or over-the-counter medication and we check it for interactions with Max DHA Krill Oil by NS Natural Stacks — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Max DHA Krill Oil by NS Natural Stacks

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 Jul 11, 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.
  • “Total Omega-3 Fatty Acids” is listed as a grouped ingredient — the label gives one combined amount (250 mg) without saying how much of each component you get.

This supplement contains 4 active ingredients focused on omega-3 support. The main players are eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) — both omega-3 fatty acids sourced from krill oil — plus esterified astaxanthin, a carotenoid (plant pigment) that acts as an antioxidant.

The product also lists total omega-3 fatty acids and phospholipids as active components. Beyond these, you'll find krill oil and tuna oil as part of the softgel capsule base.

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.

Evidence for astaxanthin's effectiveness is not established in our data. The facts note insufficient reliable evidence to rate it for age-related cognitive decline, macular degeneration, aging skin, Alzheimer's disease, athletic performance, and carpal tunnel syndrome.

We hold no effectiveness ratings for the other three active ingredients in this product.

The evidence, ingredient by ingredient 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 are limited. The most common side effects reported are abdominal pain, diarrhea, and red-colored stools.

A small number of trial participants experienced increased bowel movements or red stool color at standard doses, and at much higher doses (40 mg daily) severe stomach pain was reported in two patients. Safety data for astaxanthin are insufficient during pregnancy and breastfeeding — the facts advise against use in both.

Side effects, ingredient by ingredient 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.

Check any medications you take that are processed by the liver enzyme CYP3A4 — astaxanthin may lower their blood levels (moderate severity). Also verify drugs broken down by CYP2B6, which may be affected the same way.

We could not check the three other active ingredients against our database, so use the search tool below for your full medication list.

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 krill oil supplement pairs omega-3 fatty acids with astaxanthin, an antioxidant whose benefits aren't yet established in reliable evidence. If you take medications metabolized by your liver — especially those broken down by CYP3A4 or CYP2B6 — run them through our checker first.

Talk with your pharmacist before starting, especially if you're pregnant, breastfeeding, or on prescription drugs.

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 Sep 22, 2022.

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 Max DHA Krill Oil, straight from the product label.

Brand NS Natural Stacks
Barcode (UPC) 700600138744
Net contents 60 Softgel(s)
Market status On market
Date entered into DSLD Sep 22, 2022
DSLD ID 274237
Product type Other Combinations
Supplement form Softgel Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, 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 Max DHA Krill Oil by NS Natural Stacks, 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:
2 Softgel(s)
Maximum serving Sizes:
2 Softgel(s)
Servings per container
30
UPC/BARCODE
700600138744
IngredientAmount% DV
Calories10 Calorie(s)--
Calories from Fat10 Calorie(s)--
Eicosapentaenoic Acid75 mg--
Docosahexaenoic Acid120 mg--
Total Fat1 Gram(s)2%
Total Omega-3 Fatty Acids250 mg--
Phospholipids110 mg--
Esterified Astaxanthin300 mg--
Saturated Fat240 mg1%

Other ingredients: K-REAL Krill Oil, Tuna Oil, Softgel Capsule

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.
Suggested/Recommended/Usage/Directions

Suggested Use: Take 2 softgels per a day, or as directed by a healthcare practitioner.

General Statements

Certified Open Source: Scan for ingredient supplier information and 3rd party lab test results.

Precautions

Warning: Consult a healthcare practitioner before taking this or any nutritional supplement if you are pregnant/nursing, have or suspect a medical condition, are taking any medications, or other non-Natural Stacks dietary supplements.

Do not use is safety seal is broken or missing.

Keep out of reach of children.

Contains Shellfish (Krill), Fish (Tuna).

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.

Seals/Symbols

Certified Open Source Full Label Disclosure U.S.A. manufactured in a cGMP certified facility.

Formula

Max DHA Krill Oil with Tuna Oil

Formulation

Supports brain health

3rd Party Lab Tested

Ingredients Naturally Free of: Gluten, Dairy, Soy.

Sustainably harvested and certified by the Friend of the Sea.

FDA Statement of Identity

Dietary Supplement

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

See for yourself

Max DHA Krill Oil by NS Natural Stacks label

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

Max DHA Krill Oil 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 Max DHA Krill Oil by NS Natural Stacks

These are the 4 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 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 Omega-3 Fatty Acids

250 mg per serving
  • › Eicosapentaenoic Acid
  • › Docosahexaenoic Acid

Phospholipids

110 mg per serving

Esterified Astaxanthin

Interacts with
671 drugs
300 mg per serving

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

Esterified Astaxanthin monograph & interactions

Other (inactive) ingredients: K-REAL Krill Oil, Tuna Oil, Softgel Capsule. These complete the product’s ingredient list but are not active constituents.

Interaction report

Max DHA Krill Oil by NS Natural Stacks Drug Interactions

Want to check YOUR meds against Max DHA 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 checker
671Drugs
671 Moderate

Ingredients driving the most interactions

Esterified Astaxanthin 671

Individual Drug Interactions

The ingredients in Max DHA Krill Oil interact with 671 drugs. Click any drug to see the details.

1 of the 4 ingredients in Max DHA Krill Oil interact with drugs. Each result below shows which ingredient is responsible. Esterified Astaxanthin

Each ingredient & the kinds of drugs it affects

For each ingredient in Max DHA 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.

Esterified 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
Esterified Astaxanthin full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Max DHA Krill Oil, from the product label.

NS Natural Stacks

See all NS Natural Stacks products
Name
NS 360, Inc.
Street Address
4241 24th Ave W
City
Seattle
State
WA
ZipCode
98199
Phone Number
1-855-678-2257
Web Address
www.naturalstacks.com
Pharmacist Counseling Corner

Max DHA Krill Oil by NS Natural Stacks: Common Questions

Does Max DHA Krill Oil by NS Natural Stacks interact with any medications?
Yes. Based on its ingredients, Max DHA Krill Oil has a known interaction with 671 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Max DHA Krill Oil contains 4 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's the red/orange color I might notice in my stool?
That's likely the astaxanthin in the supplement — it's a natural pigment and can cause red-colored stools as a side effect. It's not harmful, just a visual reminder that the supplement is moving through your system.
Can I take this while I'm pregnant or breastfeeding?
The safety data for astaxanthin aren't sufficient to know either way, so the facts advise against use in both pregnancy and breastfeeding. Talk with your doctor or pharmacist about whether it's right for your situation.
How much astaxanthin is in each capsule?
The product facts don't specify the dose per capsule, so check the label on your bottle or ask your pharmacist.
Is there evidence this actually works?
For astaxanthin, the evidence isn't established in our data — we have insufficient reliable evidence to say whether it helps with age-related cognitive decline, eye health, skin aging, or the other conditions listed. We hold no effectiveness data for the omega-3 ingredients either.
What if I get stomach pain after taking it?
Abdominal pain is a known side effect, though it's not common. Stop taking it and call your pharmacist or doctor, especially if the pain is severe or doesn't go away quickly.

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

Not sure if Max DHA Krill Oil is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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

Max DHA Krill Oil label
Go deeper

The Full Monographs Behind Max DHA Krill Oil’s Ingredients

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

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

Max DHA 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.

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 3 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.

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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