Drug & supplement interaction

Graviola + Nadolol

Nadolol brand names: Corgard, Nadolol.

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

We found no known interaction between Graviola and Nadolol 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. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Graviola and Nadolol

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 Nadolol and Graviola 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.

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.

Graviola safety at a glance

Graviola overall Use caution Human safety data are limited, and lab studies raise concerns about possible nerve toxicity with long-term use.
Pregnancy Possibly Unsafe When used orally. Read the full pregnancy detail
Breastfeeding Possibly Unsafe When used orally. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Nadolol and Graviola? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Nadolol

Interactions in our licensed database are recorded against drug classes, not just single drug names. Nadolol is filed under 5 classifications — including beta-blockers, antihypertensive drugs, seizure threshold lowering drugs. Graviola has documented interactions with 1 drug class — the most serious being carbamazepine (tegretol) (moderate) — and none of Nadolol’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Graviola Does Interact With Other Medications

Graviola has 1 moderate known drug interaction in our database — Nadolol isn’t one of them. If you take anything else, check it against the full list below.

Moderate 1 No known interaction 2,829 (incl. Nadolol)
Taking anything else?

Check Another of Your Medications Against Graviola

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

What to actually watch for

No Interaction Found — But Data Suggests Graviola and Nadolol May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Nausea reported in 8.9% of FDA reports for Nadolol Additional detail

    Graviola

    “In one clinical study, some patients reported nausea and burning pain in the epigastrium after taking graviola leaf extract 300 mg daily.”

    Graviola · Natural Medicines adverse-effect record, reported in myasthenia gravis.

    1 source cited
    1. 95045. Gavamukulya Y, Wamunyokoli F, El-Shemy HA. Annona muricata: Is the natural therapy to most disease conditions including cancer growing in our backyard? A systematic review of its research history and future prospects. Asian Pac J Trop Med. 2017;10(9):835- PubMed

    Nadolol

    Listed in the ADVERSE REACTIONS section of the FDA label for Nadolol, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

Effects for Nadolol come from the ADVERSE REACTIONS section of its FDA label; effects for Graviola come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 7,530 voluntary FDA FAERS reports for Nadolol that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Graviola in Pregnancy & Breastfeeding

Pregnancy And Lactation Possibly Unsafe

When used orally.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

Everything else you take

See Every Supplement That Interacts With Nadolol

This page covers Graviola only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Nadolol page lists 145 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), Green Tea (major) and Indian Snakeroot (major).

By severity: 6 major · 119 moderate · 20 minor.

From our pharmacist’s overview on the Nadolol page

“If you take nadolol (Corgard) for blood pressure, angina, or heart rhythm, treat this list with real care, and green tea is the surprise at the top. In a clinical study, green tea cut nadolol blood levels by roughly 85 percent, which can quietly leave you undertreated.”

Reviewed by 2 · Jul 18, 2026

Open the Nadolol interaction page

One more smart check

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

We hold 217 real supplement products containing Graviola, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Graviola. Even though Graviola itself has no known interaction with Nadolol, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Graviola and Nadolol 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 Graviola
Top half

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

29 days ago today
Medication Nadolol
Steady interest

#1,682 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.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Graviola reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Graviola and Nadolol records this page draws on were last updated July 10, 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 Graviola

What is Graviola?

  • Cancer support (unproven)
  • Infections
  • Inflammation
  • High blood pressure
  • Digestive complaints
  • Diabetes

Graviola (soursop) is a tropical fruit tree whose leaves, fruit, and bark are used in traditional medicine, especially in parts of South America, Africa, and Asia. Despite popular online claims that it fights cancer, there is no reliable human evidence that it treats or cures any disease, and animal research raises concerns that it may harm nerve cells. Talk with your pharmacist or doctor before using it, and avoid it during pregnancy and breastfeeding.

Annona muricata · Annonaceae · Leaves, fruit, bark, seeds, and roots · Tea, capsules, tinctures, fruit pulp, and juice

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

Graviola: dosing

There is no established or standardized safe dose of graviola. Products vary widely in strength and in which plant part they contain.If you choose to use a graviola product, follow the directions on the label, do not exceed the recommended amount, and avoid long-term daily use.

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

Read the full Graviola monograph & all interactions
Medication

About Nadolol

What Is Nadolol Used For?

Brand names: Corgard, Nadolol

Nadolol tablets are used for two main conditions: high blood pressure (hypertension) and angina pectoris (ongoing chest pain caused by reduced blood flow to the heart). Lowering high blood pressure reduces the risk of stroke and heart attack.

For high blood pressure, nadolol may be prescribed on its own or combined with other blood pressure medications, especially thiazide-type diuretics (water pills). For angina, it is used for long-term management to help reduce how often chest pain occurs.

Most-Reported Side Effects for Nadolol

From FAERS, the FDA’s public side-effect reporting system (7,530 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Macular degeneration 831 reports
Nausea 673 reports
Headache 603 reports
Fatigue 526 reports
Weight decreased 464 reports
See full Nadolol drug information
Keep checking

Other Drugs & Graviola

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

0Major
1Moderate
0Minor
2,828No known interaction
1 Moderate 2,828 No interaction
Moderate

1 interaction

No interaction 2,828 drugs checked — show the list

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

Showing the 60 most looked-up of 2,828 medications checked with no known interaction — see the full Graviola list.

See the full Graviola interactions page
See every supplement checked against Nadolol, ranked by severity
Evidence & sources

Graviola References

The 4 references that drive our Graviola monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Caparros-Lefebvre D, Elbaz A. Possible relation of atypical parkinsonism in the French West Indies with consumption of tropical plants: a case-control study. Caribbean Parkinsonism Study Group. Lancet 1999;354:281-6. PubMed
  2. Gavamukulya Y, Wamunyokoli F, El-Shemy HA. Annona muricata: Is the natural therapy to most disease conditions including cancer growing in our backyard? A systematic review of its research history and future prospects. Asian Pac J Trop Med. 2017;10(9):835- PubMed
  3. Abu Soukhon AA, Abu-Qatouseh L, Mansoor K, et al. Cytotoxicity Activity of Graviola Fruit Extract with Carbamazepine and Valproic Acid Show Antagonistic and Indifferent Effects. Asian Pac J Cancer Prev 2023;24(6):1869-1875. PubMed
  4. Cleret de Langavant L, Roze E, Petit A, et al. Annonaceae Consumption Worsens Disease Severity and Cognitive Deficits in Degenerative Parkinsonism. Mov Disord 2022;37(12):2355-2366. PubMed

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 Graviola and Nadolol Together: Common Questions

Is it safe to take Graviola with Nadolol?
We do not list a known interaction between Graviola and Nadolol. 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.
Do Graviola and Nadolol have any of the same side effects?
Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
How was the Graviola and Nadolol combination checked?
Interactions in our licensed database are recorded against drug classes. Nadolol is filed under 5 classifications, and Graviola has documented interactions with 1 drug class — none of Nadolol's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Graviola interact with any other medications?
Yes. Graviola has 1 documented drug interaction in our database — Nadolol is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Nadolol interact with any supplements?
Yes. Nadolol has documented interactions with 145 supplements in our database — Graviola is not one of them. The Nadolol 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

Graviola monograph Uses, safety profile, and every drug interaction in one place Nadolol drug information The full plain-English guide to this medication Nadolol supplement interactions Every supplement checked against Nadolol, 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 4 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Nadolol and Graviola?

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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.