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

DLPA Complex Ingredients & Drug Interactions

by Higher Nature

DLPA Complex label
See full label image
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 DLPA Complex 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

DLPA Complex is a dietary supplement by Higher Nature with 3 active ingredients. Its ingredients are commonly taken for inflammation and swelling, sinus and nasal congestion, digestion support.Based on those ingredients, 776 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Astaxanthin, Bromelain. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against DLPA Complex by Higher Nature

Ask about any prescription or over-the-counter medication and we check it for interactions with DLPA Complex by Higher Nature — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of DLPA Complex by Higher Nature

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 23, 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 3 of its 3 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

DLPA Complex contains 3 active ingredients. Bromelain is an enzyme derived from pineapple stem that's thought to reduce inflammation.

Astaxanthin is a red pigment found naturally in algae and seafood, classified as a carotenoid (a type of antioxidant). DL-phenylalanine is an amino acid form that your body may convert to other compounds.

The capsules also contain inactive ingredients including magnesium stearate, silicon dioxide, and the source organism Haematococcus pluvialis (the algae that supplies astaxanthin).

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

The label doesn't state a purpose we can grade — see each ingredient's own graded uses on its monograph instead.

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

The evidence for what these ingredients do isn't established in our data. Bromelain, astaxanthin, and DL-phenylalanine all have insufficient reliable evidence to rate for the conditions listed — including hay fever, burns, age-related cognitive decline, and skin aging.

That doesn't mean they don't work; it means the research we have access to hasn't reached the threshold to say they reliably do.

The evidence, ingredient by ingredient Bromelain 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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Bromelain and astaxanthin are both generally well tolerated in short-term use, though long-term safety data are limited for both. The most common side effects are gastrointestinal: diarrhea, flatulence, stomach upset, and headache with bromelain; abdominal pain, diarrhea, and red-colored stools with astaxanthin.

Some people may have allergic reactions to bromelain, especially if it's inhaled — symptoms can include throat itching, difficulty swallowing, eye irritation, and asthma-like reactions. The safety data advises against bromelain and astaxanthin during pregnancy and while breastfeeding.

We hold no safety data on DL-phenylalanine in pregnancy or breastfeeding — talk with your doctor or pharmacist about whether this product is right for you if you're pregnant or nursing.

Side effects, ingredient by ingredient Bromelain 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?
  • 2 of the 2 matched ingredients can interact with medications — Bromelain, Astaxanthin.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 777 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.

If you take blood thinners (anticoagulants) or antiplatelet drugs like aspirin or clopidogrel, double-check with your doctor or pharmacist first — bromelain may increase bleeding risk. If you take tetracycline antibiotics, the same goes.

And if many of your medications are processed by your liver's CYP3A4 or CYP2B6 enzymes, astaxanthin may theoretically affect how well they work — though this hasn't been proven in humans, it's worth confirming with your provider.

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.

DLPA Complex may appeal to you if you're looking for a multi-ingredient anti-inflammatory supplement, but the evidence for its effects isn't yet established in our data. If you take blood thinners, antiplatelet drugs, or tetracycline antibiotics, or if your liver metabolizes many of your medications, you'll want to check with your doctor or pharmacist before starting — the interactions here could matter.

Pregnant people and those breastfeeding should avoid it. Run your full medication list through the checker below.

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

Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 23, 2015.

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 DLPA Complex, straight from the product label.

Brand Higher Nature
Barcode (UPC) 5031013104091
Net contents 30 Capsule(s)
Market status On market
Date entered into DSLD Jan 23, 2015
DSLD ID 41266
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Children 4 or More Years of Age, Vegan, Vegetarian, 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 DLPA Complex by Higher Nature, 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 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
UPC/BARCODE
5031013104091
IngredientAmount% DV
Bromelain200 mg--
Astaxanthin1 mg--
DL-Phenylalanine225 mg--

Other ingredients: Bromelain, Powder, Capsule, Haematococcus pluvialis, Magnesium Stearate, Silicon Dioxide

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.
Formulation

DOES NOT CONTAIN: sugar, salt, wheat, gluten, yeast, lactose, dairy products, artificial preservatives, colours or flavourings.

Suitable for vegetarians and vegans.

VEGETARIAN

General Statements

This product is not tested on animals.

Charitable organisations policy: supplements regularly donated

Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle.

This bottle has a UV filter.

Seals/Symbols

Jar {Recycle} 1 PET Lid {Recycle} 5 PP

Formula

DL-phenylalanine, bromelain & astaxanthin

Contains phenylalanine.

FDA Statement of Identity

FOOD SUPPLEMENT

Precautions

Contains phenylalanine.

Do not exceed recommended daily intake.

Not advisable if pregnant or in cases of melanoma, schizophrenia or high blood pressure or if taking fenfluramine, anti-depressants or MAO inhibitor drugs.

Keep out of reach of children.

Suggested/Recommended/Usage/Directions

DIRECTIONS: Adults and children over 8 years, take 1 capsule 3 times a day on an empty stomach, 30 to 60 minutes before meals, or as your health professional advises.

Storage

Ensure lid is tight and store in a cool, dry, steam-free environment as damp conditions can affect the product quality.

General

INC030 106 INC-240-03

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

See for yourself

DLPA Complex by Higher Nature label

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

DLPA Complex 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 DLPA Complex by Higher Nature

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

Serving size1 Capsule(s) Dosage formCapsule 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.

Bromelain

Interacts with
141 drugs
200 mg per serving

Bromelain is a group of protein-digesting enzymes from pineapple that people take mainly for inflammation, swelling, and sinus problems. Some early st...

Bromelain monograph & interactions

Astaxanthin

Interacts with
671 drugs
1 mg per serving Form: Haematococcus pluvialis

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

DL-Phenylalanine

225 mg per serving

Other (inactive) ingredients: Bromelain, Powder, Capsule, Haematococcus pluvialis, Magnesium Stearate, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

DLPA Complex by Higher Nature Drug Interactions

Want to check YOUR meds against DLPA Complex?

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
776Drugs
758 Moderate 18 Minor

Ingredients driving the most interactions

Astaxanthin 671
Bromelain 141

Individual Drug Interactions

The ingredients in DLPA Complex interact with 776 drugs. Click any drug to see the details.

2 of the 3 ingredients in DLPA Complex interact with drugs. Each result below shows which ingredient is responsible. Astaxanthin Bromelain

Each ingredient & the kinds of drugs it affects

For each ingredient in DLPA Complex 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

Bromelain2 drug types · 141 drugs

Anticoagulant/Antiplatelet Drugs

Bromelain may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
There is one case report of a patient experiencing minor bruising while taking bromelain with naproxen. Bromelain is thought to have antiplatelet activity. Whether this interaction is of concern with topical bromelain is unclear. Interference with coagulation of burn wounds has been reported in a patient receiving bromelain-based enzymatic debridement. However, observational research has found that topical bromelain debridement is not associated with increases or decreases in laboratory markers of coagulation when compared with surgical debridement.

Likelihood Possible Evidence D
Tetracycline Antibiotics

Theoretically, bromelain might increase levels of tetracycline antibiotics.
Laboratory research suggests that bromelain might increase the absorption of tetracycline antibiotics. However, a study in healthy adults reported no difference in tetracycline plasma levels when a 500 mg dose was taken with or without bromelain 80 mg.

Likelihood Possible Evidence B
Bromelain full monograph & interactions
The maker

Brand information

Manufacturer and brand details for DLPA Complex, from the product label.

Higher Nature

See all Higher Nature products
Name
Higher Nature
City
Burwash Common
State
East Sussex
ZipCode
TN19 7LX
Web Address
www.highernature.com
Pharmacist Counseling Corner

DLPA Complex by Higher Nature: Common Questions

Does DLPA Complex by Higher Nature interact with any medications?
Yes. Based on its ingredients, DLPA Complex has a known interaction with 776 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
DLPA Complex 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.
Can I take this if I'm on a blood thinner like warfarin?
Not without talking to your doctor first. Bromelain in this product may increase your bleeding risk if combined with blood thinners or antiplatelet drugs. Your doctor or pharmacist needs to know you're considering it so they can advise you on your specific situation.
What are the most common side effects?
The main ones are gastrointestinal: diarrhea, gas, stomach upset, and headache from the bromelain; and abdominal pain, diarrhea, and red-colored stools from the astaxanthin. Most people tolerate these ingredients well short-term, but long-term safety data are limited.
Is it safe to take during pregnancy?
No, the safety data advises against bromelain and astaxanthin during pregnancy. We don't have safety information on DL-phenylalanine in pregnancy either, so talk with your doctor or pharmacist for personalized advice.
Can I take this while breastfeeding?
The data advises against bromelain and astaxanthin while breastfeeding due to unknown safety. We don't have breastfeeding data on DL-phenylalanine either — check with your doctor or pharmacist about whether it's right for you.
Does bromelain actually reduce inflammation?
The evidence in our data is rated insufficient to say either way. That doesn't mean it doesn't work — just that the research we have access to hasn't yet proven it reliably does.
What is DL-phenylalanine?
It's an amino acid form that your body can theoretically convert to other compounds. We don't hold interaction or safety data on it, so you won't see detailed information about it on this page.

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.

DLPA Complex label
Go deeper

The Full Monographs Behind DLPA Complex’s Ingredients

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

Herb & supplement monograph

Bromelain

Interacts with 141 drugs

Bromelain is a group of protein-digesting enzymes from pineapple that people take mainly for inflammation, swelling, and sinus problems. Some early studies are promising, but the overall evi...

Read the full Bromelain 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

DLPA Complex'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 22 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.

Bromelain 19 references
  1. Nettis E, Napoli G, Ferrannini A, Tursi A. IgE-mediated allergy to bromelain. Allergy 2001;56:257-8. PubMed
  2. Taussig SJ, Batkin S. Bromelain, the enzyme complex of pineapple (Ananas comosus) and its clinical application. An update. J Ethnopharmacol 1988;22:191-203.. PubMed
  3. Bradbrook ID, Morrison PJ, Rogers HJ. The effect of bromelain on the absorption of orally administered tetracycline. Br J Clin Pharmacol 1978;6:552-4. PubMed
  4. Bush TM, Rayburn KS, Holloway SW, et al. Adverse interactions between herbal and dietary substances and prescription medications: a clinical survey. Altern Ther Health Med 2007;13:30-5.
  5. Brien S, Lewith G, Walker AF, et al. Bromelain as an adjunctive treatment for moderate-to-severe osteoarthritis of the knee: a randomized placebo-controlled pilot study. QJM 2006;99:841-50. PubMed
  6. Mori S, Ojima Y, Hirose T, et al. The clinical effect of proteolytic enzyme containing bromelain and trypsin on urinary tract infection evaluated by double blind method. Acta Obstet Gynaecol Jpn 1972;19:147-53.
  7. Glaser D, Hilberg T. The influence of bromelain on platelet count and platelet activity in vitro. Platelets 2006;17:37-41. PubMed
  8. Heinicke R M, van der Wal L, Yokoyama M. Effect of bromelain (Ananase) on human platelet aggregation. Experientia 1972;28:844-5. PubMed
  9. Gailhofer, G., Wilders-Truschnig, M., Smolle, J., and Ludvan, M. Asthma caused by bromelain: an occupational allergy. Clin Allergy 1988;18(5):445-450. PubMed
  10. Mattei, O., Fabri, G., and Farina, G. [Occupational health experience regarding four cases of asthma due to bromelain (author's transl)]. Medicina del Lavoro 1979;70(5):404-409.
  11. Galleguillos, F. and Rodriguez, J. C. Asthma caused by bromelin inhalation. Clin Allergy 1978;8(1):21-24. PubMed
  12. Perez-Camo I, Quirce S, Duran MA, and et al. Latex allergy: evidence of cross-reactivity with papain and bromelain [abstract]. Allergy 1996;51(suppl 31):48.
  13. Martin GJ, Ehrenreich J, and Asbell N. Bromelain: pineapple proteases with anti-edema activity. Exp Med Surg 1962;20:227-247.
  14. Kasemsuk T, Saengpetch N, Sibmooh N, Unchern S. Improved WOMAC score following 16-week treatment with bromelain for knee osteoarthritis. Clin Rheumatol. 2016 Oct;35(10):2531-40. PubMed
  15. Kutlu Ö, DemirbaS A, Elmas ÖF, Güvenç U, Metin A. Fixed drug eruption: a new side effect of bromelain. Contact Dermatitis 2020. Online ahead of print. PubMed
  16. Shoham Y, Shapira E, Haik J, et al. Bromelain-based enzymatic debridement of chronic wounds: Results of a multicentre randomized controlled trial. Wound Repair Regen 2021;29(6):899-907. PubMed
  17. Pfister P, Garcia Wendel PD, Kim BS, et al. Coagulation side effects of enzymatic debridement in burned patients. Burns 2022. PubMed
  18. Hasham S, Riyat H, Fletcher A, O'Boyle CP, Alexander S. To bleed or not to bleed? Case series and discussion of haemorrhage risk with enzymatic debridement in burn injuries. Scars Burn Heal 2023;9:20595131231168333. PubMed
  19. Leelakanok N, Petchsomrit A, Janurai T, Saechan C, Sunsandee N. Efficacy and safety of bromelain: A systematic review and meta-analysis. Nutr Health 2023. PubMed

See these in context on the Bromelain 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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