Drug & supplement interaction

Laminaria + Benazepril

Benazepril brand name: Lotensin.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Laminaria has a moderate interaction with Benazepril. Theoretically, laminaria might increase the risk of hyperkalemia when taken with ACEIs.

Read the full interaction report
SeverityModerate
LikelihoodPossible
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Laminaria and Benazepril

Here is the interaction we found between these two, with the evidence behind it.

Moderate

ACE INHIBITORS (ACEIs)

Why this applies to Benazepril

Benazepril falls under ACE INHIBITORS (ACEIs) — the group Laminaria interacts with.

Theoretically, laminaria might increase the risk of hyperkalemia when taken with ACEIs.
Laminaria contains potassium.
Severity Moderate Likelihood Possible Evidence D

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here is the thing to know about pairing kelp (Laminaria) with benazepril. Benazepril is an ACE inhibitor, and one of its normal effects is to nudge your potassium levels up a bit. Laminaria carries some potassium of its own, so combining the two could, in theory, push your potassium higher than you want.

To be fair, this is a theoretical concern based on how these work, not something proven in studies, and the amount of potassium in kelp is usually modest. Still, if potassium climbs too high you can feel symptoms like muscle weakness, tingling, or an irregular heartbeat. There's also a separate point worth raising: kelp's iodine can affect your thyroid, which matters for overall health. Please check with your pharmacist or doctor before adding kelp, especially if you also take a water pill or potassium supplement.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Laminaria Also Interacts With Other Medications

Laminaria has 68 moderate known drug interactions in our database — the Benazepril one above is one of them. If you take anything else, check it against the full list below.

Moderate 68 No known interaction 2,762 (incl. Benazepril)
Taking anything else?

Check Another of Your Medications Against Laminaria

Covers the 2,830 medications we’ve checked against Laminaria. Pick one to open its full report.

From our Q&A

Questions About Laminaria or Benazepril

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Laminaria or Benazepril, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Benazepril

This page covers Laminaria only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Benazepril page lists 166 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Asarabacca (major) and Siberian Cocklebur (major).

By severity: 6 major · 136 moderate · 24 minor.

From our pharmacist’s overview on the Benazepril page

“Benazepril (Lotensin) lowers blood pressure, and most of the 166 supplements on this page pull on that same lever, either dropping your pressure further or pushing it back up and undoing the drug's work. Six carry a major rating and deserve your attention before everything else, among them activated charcoal, which can soak up your dos…”

Reviewed by 2 · Jul 18, 2026

Open the Benazepril interaction page

One more smart check

Taking Laminaria as Part of a Dietary Supplement Product? Check It for Interactions

We hold 229 real supplement products containing Laminaria, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Laminaria. Your product may carry other ingredients that interact with Benazepril too, on top of Laminaria — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Laminaria and Benazepril Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Laminaria
Steady interest

#1,017 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Benazepril
Steady interest

#1,827 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Supplement

About Laminaria

What is Laminaria?

  • Source of dietary iodine
  • Thyroid support
  • Cervical dilation (medical procedure)
  • Weight management
  • Digestive and detox supplements
  • General nutrition (vitamins and minerals)

Laminaria is a type of brown seaweed (kelp) that is very rich in iodine and is also used in medical settings as a natural cervical dilator. Because its iodine content can be high and variable, supplements may upset thyroid function, so it should be used cautiously and under professional guidance. Always talk with your pharmacist or doctor before using kelp products, especially if you have a thyroid condition.

Read the full Laminaria monograph & all interactions
Medication

About Benazepril

What Is Benazepril Used For?

Brand name: Lotensin

Benazepril — sold as Lotensin and under the generic names Benazepril and Benazepril Hydrochloride — is approved to treat high blood pressure (hypertension). Lowering blood pressure reduces the risk of serious cardiovascular events, including strokes and heart attacks.

It can be used on its own or combined with a thiazide diuretic (water pill) when blood pressure needs extra control. Lotensin is specifically indicated for the treatment of hypertension to lower blood pressure.

See full Benazepril drug information
Keep checking

Other Drugs & Laminaria

Browse every other medication we’ve checked against Laminaria — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
68Moderate
0Minor
2,761No known interaction
68 Moderate 2,761 No interaction
Moderate

68 interactions

Showing 60 of 68 moderate interactions — see all 68 on the Laminaria page.

No interaction 2,761 drugs checked — show the list

We also checked Laminaria against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,761 medications checked with no known interaction — see the full Laminaria list.

See the full Laminaria interactions page
See every supplement checked against Benazepril, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

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

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

Keep exploring
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Pharmacist Counseling Corner

Taking Laminaria and Benazepril Together: Common Questions

Can you take Laminaria with Benazepril?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
How serious is the Laminaria and Benazepril interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

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

Still Have a Question About Benazepril and Laminaria?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.