Drug & supplement interaction

Water Dock + Ranolazine

Ranolazine brand names: Ranexa, Aspruzyo.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Water Dock and Ranolazine in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first.

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Interaction report

Water Dock and Ranolazine

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Ranolazine and Water Dock in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

Worth understanding: our licensed dataset holds no drug-interaction record for Water Dock at all — not against Ranolazine, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Water Dock safety at a glance

Water Dock overall Use caution Limited safety data and oxalate content mean it should be used cautiously and in modest amounts.
Pregnancy Avoid Not enough safety information is available, so it is best avoided during pregnancy.
Breastfeeding Avoid Safety during breastfeeding is unknown, so avoid use.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Ranolazine and Water Dock? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Ranolazine’s Own FDA Label Lists

This is not an interaction — none of it involves Water Dock. These are the most notable effects listed in the ADVERSE REACTIONS section of Ranolazine’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 5 of them are worth acting on rather than waiting out — marked below.

  • Chest pain Worth acting on mentioned in 11.8% of FDA reports for Ranolazine
  • A slow heartbeat Worth acting on
  • Fainting Worth acting on
  • Confusion Worth acting on
  • Shortness of breath Worth acting on mentioned in 4.2% of FDA reports for Ranolazine
  • Ringing in the ears
  • Blurred vision
  • Sweating
  • Dry mouth
  • A fast or pounding heartbeat

Showing the 10 most notable of 21 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Ranolazine. Read the label on DailyMed › Where a percentage is shown, it is the share of 10,189 voluntary FDA FAERS reports for Ranolazine that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Water Dock’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Water Dock side to compare — that is a limit of the record, not a statement that Water Dock has no side effects.

Everything else you take

See Every Supplement That Interacts With Ranolazine

This page covers Water Dock only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ranolazine page lists 153 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Cesium (major) and Ephedra (major).

By severity: 8 major · 109 moderate · 36 minor.

From our pharmacist’s overview on the Ranolazine page

“Ranolazine (Ranexa, Aspruzyo), a medicine for chronic chest pain, depends heavily on one liver enzyme, CYP3A4, and that is where most of its supplement trouble sits. Grapefruit can push ranolazine levels up, St.”

Reviewed by 2 · Jul 18, 2026

Open the Ranolazine interaction page

How much people look this up

Where Water Dock and Ranolazine 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 Water Dock
Steady interest

#1,132 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Ranolazine
Top half

#848 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.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions. Water Dock is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Water Dock reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Water Dock and Ranolazine records this page draws on were last updated June 22, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Water Dock

What is Water Dock?

  • Skin conditions and sores
  • Digestive complaints
  • Sore throat and mouth rinses
  • Mild constipation
  • Tooth and gum cleaning

Water Dock is a wetland plant in the dock family that has been used in traditional folk medicine, mostly for skin problems and minor digestive complaints. There is very little modern scientific research to confirm that it works or to establish a safe dose, so it should be used cautiously and avoided during pregnancy and breastfeeding.

Rumex aquaticus · Polygonaceae · Roots, leaves, and seeds · Dried root, powder, tea, tincture, traditional topical preparations

An interaction check asks whether these two react with each other — it does not ask whether Water Dock is a good idea for someone in your situation. Here is what our Water Dock record says about it on its own.

Water Dock: dosing

There is no established or standardized dose for Water Dock. It is not a common commercial product, and the strength of different preparations can vary widely.If you choose to use a product that contains it, follow the directions on the label and do not exceed the suggested amount.

From our Water Dock monograph — the full record covers uses, side effects and every documented interaction.

Read the full Water Dock monograph & all interactions
Medication

About Ranolazine

What Is Ranolazine Used For?

Brand names: Ranexa, Aspruzyo

Ranolazine treats chronic angina — the recurring chest pain or pressure that happens when the heart isn't getting enough blood and oxygen. It is used when other angina medicines aren't enough on their own.

Both the extended-release tablet (sold as Ranexa and generic ranolazine) and the oral powder form (sold as Aspruzyo Sprinkle) are approved for this use. Ranolazine can be combined with other heart medicines such as beta-blockers, nitrates, calcium channel blockers, anti-platelet drugs, statins, ACE inhibitors, and angiotensin receptor blockers.

Most-Reported Side Effects for Ranolazine

From FAERS, the FDA’s public side-effect reporting system (10,376 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Myocardial infarction 646 reports
Chest pain 614 reports
Angina pectoris 595 reports
Stent placement 582 reports
Dyspnea 439 reports
See full Ranolazine drug information
Keep checking

Other Drugs & Water Dock

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

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

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

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Water Dock list.

See the full Water Dock interactions page
See every supplement checked against Ranolazine, ranked by severity
Evidence & sources

Water Dock References

The 3 sources that drive our Water Dock monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Water Dock is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Dietary Supplements: What You Need to Know — NIH Office of Dietary Supplements Source
  2. Herbal Medicine — MedlinePlus Source
  3. Using Dietary Supplements Wisely — NIH NCCIH Source

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Water Dock and Ranolazine Together: Common Questions

Is it safe to take Water Dock with Ranolazine?
We do not list a known interaction between Water Dock and Ranolazine. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Does Ranolazine interact with any supplements?
Yes. Ranolazine has documented interactions with 153 supplements in our database — Water Dock is not one of them. The Ranolazine interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Water Dock monograph Uses, safety profile, and every drug interaction in one place Ranolazine drug information The full plain-English guide to this medication Ranolazine supplement interactions Every supplement checked against Ranolazine, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Ranolazine and Water Dock?

Our pharmacists answer your medication & supplement questions — free.

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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.