Drug & supplement interaction

Apple + Pralsetinib

Pralsetinib brand name: Gavreto.

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 Apple and Pralsetinib 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 label for Pralsetinib states a food rule worth keeping to.

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Interaction report

Apple and Pralsetinib

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 Pralsetinib and Apple 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.

Apple safety at a glance

Apple overall Generally safe Apples as a food are safe for most people when eaten in normal amounts.
Pregnancy Generally safe Apples eaten as food are considered safe in pregnancy, but concentrated extracts are not well studied.
Breastfeeding Generally safe Apples as a food are considered safe while breastfeeding; supplements are not well studied.

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

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

Why No Interaction Is Listed for Pralsetinib

Interactions in our licensed database are recorded against drug classes, not just single drug names. Pralsetinib is filed under 5 classifications — including qt interval-prolonging drugs, p-glycoprotein substrates, hepatotoxic drugs. Apple has documented interactions with 7 drug classes — the most serious being organic anion-transporting polypeptide substrates (oatp) (major), aliskiren (tekturna, rasilez) (moderate) and antidiabetes drugs (moderate) — and none of Pralsetinib’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

Apple Does Interact With Other Medications

Apple has 47 major, 253 moderate known drug interactions in our database — Pralsetinib isn’t one of them. If you take anything else, check it against the full list below.

Major 47 Moderate 253 No known interaction 2,530 (incl. Pralsetinib)
Taking anything else?

Check Another of Your Medications Against Apple

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

What to actually watch for

What Apple Itself Has Been Linked To

This is not an interaction — nothing below involves Pralsetinib. It is the side-effect record for Apple on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Apple, this list is the first place to look. 2 entries are worth acting on rather than waiting out — marked below.

  • A severe allergic reaction Worth acting on Additional detail

    “Patients allergic to other fruits in the Rosaceae family, including apricot, almond, plum, peach, pear, and strawberry, can also be allergic to apples. Rarely, the allergy has resulted in anaphylaxis.”

    Apple · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).

    2 sources cited
    1. 7129. Rodriguez J, Crespo JF, Lopez-Rubio A, et al. Clinical cross-reactivity among foods of the Rosaceae family. J Allergy Clin Immunol 2000;106:183-189. PubMed
    2. 94425. Tsiougkos N, Vovolis V. Repeated anaphylactic episodes to orange and apple. Eur Ann Allergy Clin Immunol. 2013 May;45(3):113-5.
  • An allergic reaction Worth acting on Additional detail

    Recorded for Apple in the same Natural Medicines adverse-effect record shown under A severe allergic reaction above.

  • Bloating or gas Additional detail

    “Orally, apple products, including whole apples, apple puree, and apple juice, may cause bloating and flatulence in some people.”

    Apple · Natural Medicines adverse-effect record, reported in flatulence.

    1 source cited
    1. 104184. Krishnasamy S, Lomer MCE, Marciani L, et al. Processing apples to puree or juice speeds gastric emptying and reduces postprandial intestinal volumes and satiety in healthy adults. J Nutr 2020;150(11):2890-9. PubMed

Everything above comes from the Natural Medicines adverse-effect record for Apple — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Pralsetinib’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Pralsetinib column appears here.

How to take them

Some Pralsetinib Products Have a Food Rule — Apple Should Not Break It

At least one FDA label for a product containing Pralsetinib says to take it on an empty stomach. Most supplements — Apple included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Pralsetinib on its own and move Apple to a meal later in the day.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Pralsetinib products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

( 2.1 , 14 ) The recommended dosage in adults and pediatric patients 12 years and older is 400 mg orally once daily on an empty stomach (no food intake for at least 2 hours before and at least 1 hour after taking GAVRETO).

From the Dosage and Administration section of the FDA label we read for Pralsetinib — where that label names a specific product, the instruction is that product's. See the Pralsetinib drug page ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Overlapping uses

What Pralsetinib Is Prescribed For, and What Apple Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Pralsetinib is a prescription medicine with approved uses on its FDA label. Apple is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Pralsetinib is prescribed for: Gavreto (pralsetinib) is used to treat adults with metastatic RET fusion-positive non-small cell lung cancer (NSCLC) — a type of lung cancer that has spread and carries a specific genetic alteration detected by an FDA-approved test. Gavreto is also approved for adults and children aged 12 and older with advanced or metastatic RET fusion-positive thyroid cancer who need systemic (whole-body) treatment and whose cancer no longer responds to radioactive iodine (when radioactive iodine is an appropriate option). This thyroid cancer use is under accelerated approval, meaning continued approval depends on results from confirmatory clinical trials.

Apple has been studied for:

  • Cancer studied, not established Apple has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Apple for cancer

    It is unclear if apple consumption is beneficial for preventing cancer.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Pralsetinib on your own; if you are taking Apple for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Apple or Pralsetinib

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Apple or Pralsetinib, 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 Pralsetinib

This page covers Apple only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Pralsetinib page lists 181 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), Beer (major) and Cesium (major).

By severity: 11 major · 134 moderate · 36 minor.

From our pharmacist’s overview on the Pralsetinib page

“With pralsetinib (Gavreto), a targeted therapy for RET-driven lung and thyroid cancers, I would treat this list as required reading rather than background noise. Most of the interactions change how much of the drug the body actually gets: grapefruit can push its levels higher, while St.”

Reviewed by 2 · Jul 18, 2026

Open the Pralsetinib interaction page

One more smart check

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

We hold 2,841 real supplement products containing Apple, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Apple. Even though Apple itself has no known interaction with Pralsetinib, 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 Apple and Pralsetinib 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 Apple
Top 10%

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

29 days ago today
Medication Pralsetinib
Steady interest

#2,164 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 Apple reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Apple and Pralsetinib 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 Apple

What is Apple?

Apple
  • General nutrition and fiber intake
  • Heart and cholesterol health
  • Blood sugar and weight management
  • Digestive regularity
  • Antioxidant support

Apples are a nutritious whole food that provides fiber, vitamins, and antioxidant plant compounds, and eating them regularly fits well into a healthy diet. While research suggests apples may support heart and digestive health, most claims about concentrated apple supplements or extracts are not strongly proven, so enjoy apples as food and talk with your pharmacist before using high-dose products.

Malus domestica · Rosaceae · Fruit (with peel), and sometimes the peel, pectin (fiber), juice, and cider vinegar · Fresh fruit, juice, dried fruit, applesauce, apple cider vinegar, pectin supplements, polyphenol extracts

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

Apple: dosing

There is no official medicinal dose for apples because they are a food rather than a drug. As part of a healthy diet, eating one or more whole apples per day is a reasonable goal for most people.For apple supplements such as pectin, polyphenol extracts, or apple cider vinegar products, there is no established standardized dose.

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

Read the full Apple monograph & all interactions
Medication

About Pralsetinib

What Is Pralsetinib Used For?

Brand name: Gavreto

Gavreto (pralsetinib) is used to treat adults with metastatic RET fusion-positive non-small cell lung cancer (NSCLC) — a type of lung cancer that has spread and carries a specific genetic alteration detected by an FDA-approved test.

Gavreto is also approved for adults and children aged 12 and older with advanced or metastatic RET fusion-positive thyroid cancer who need systemic (whole-body) treatment and whose cancer no longer responds to radioactive iodine (when radioactive iodine is an appropriate option). This thyroid cancer use is under accelerated approval, meaning continued approval depends on results from confirmatory clinical trials.

Most-Reported Side Effects for Pralsetinib

From FAERS, the FDA’s public side-effect reporting system (1,788 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Product prescribing issue 181 reports
Fatigue 126 reports
Asthenia 116 reports
Anemia 98 reports
Hypertension 96 reports
See full Pralsetinib drug information
Keep checking

Other Drugs & Apple

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

47Major
253Moderate
0Minor
2,529No known interaction
47 Major 253 Moderate 2,529 No interaction
Major

47 interactions

Moderate

253 interactions

Showing 60 of 253 moderate interactions — see all 253 on the Apple page.

No interaction 2,529 drugs checked — show the list

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

Showing the 60 most looked-up of 2,529 medications checked with no known interaction — see the full Apple list.

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

Apple References

The 16 references that drive our Apple 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. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  2. Bailey DG, Dresser GK, Munoz C, et al. Reduction of fexofenadine bioavailability by fruit juices. Clin Pharmacol Ther 2001;69:P21.
  3. Rodriguez J, Crespo JF, Lopez-Rubio A, et al. Clinical cross-reactivity among foods of the Rosaceae family. J Allergy Clin Immunol 2000;106:183-189. PubMed
  4. Greenblatt DJ. Analysis of drug interactions involving fruit beverages and organic anion-transporting polypeptides. J Clin Pharmacol 2009;49:1403-7. PubMed
  5. Bailey DG. Fruit juice inhibition of uptake transport: a new type of food-drug interaction. Br J Clin Pharmacol 2010;70:645-55. PubMed
  6. Kamath AV, Yao M, Zhang Y, Chong S. Effect of fruit juices on the oral bioavailability of fexofenadine in rats. J Pharm Sci 2005;94:233-9. PubMed
  7. Tapaninen T, Neuvonen PJ, Niemi M. Orange and apple juice greatly reduce the plasma concentrations of the OATP2B1 substrate aliskiren. Br J Clin Pharmacol 2011;71:718-26. PubMed
  8. Jeon H, Jang IJ, Lee S, et al. Apple juice greatly reduces systemic exposure to atenolol. Br J Clin Pharmacol 2012 May 11. doi: 10.1111/j.1365-2125.2012.04324.x. [Epub ahead of print]. PubMed
  9. Visvanathan, R., Chen, R., Horowitz, M., and Chapman, I. Blood pressure responses in healthy older people to 50 g carbohydrate drinks with differing glycaemic effects. Br J Nutr 2004;92(2):335-340. PubMed
  10. Asp, N. G., Agardh, C. D., Ahren, B., Dencker, I., Johansson, C. G., Lundquist, I., Nyman, M., Sartor, G., and Schersten, B. Dietary fibre in type II diabetes. Acta Med Scand Suppl 1981;656:47-50. PubMed
  11. Akamine Y, Miura M, Komori H, et al. Effects of one-time apple juice ingestion on the pharmacokinetics of fexofenadine enantiomers. Eur J Clin Pharmacol. 2014 Sep;70(9):1087-95. PubMed
  12. Luo J, Imai H, Ohyama T, et al. The Pharmacokinetic Exposure to Fexofenadine is Volume-Dependently Reduced in Healthy Subjects Following Oral Administration With Apple Juice. Clin Transl Sci. 2016 Aug;9(4):201-6. PubMed
  13. Tsiougkos N, Vovolis V. Repeated anaphylactic episodes to orange and apple. Eur Ann Allergy Clin Immunol. 2013 May;45(3):113-5.
  14. Rubido S, García-Caballero L, Abeleira MT, Limeres J, García M, Diz P. Effect of chewing an apple on dental plaque removal and on salivary bacterial viability. PLoS One. 2018;13(7):e0199812. PubMed
  15. Krishnasamy S, Lomer MCE, Marciani L, et al. Processing apples to puree or juice speeds gastric emptying and reduces postprandial intestinal volumes and satiety in healthy adults. J Nutr 2020;150(11):2890-9. 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 Apple and Pralsetinib Together: Common Questions

Is it safe to take Apple with Pralsetinib?
We do not list a known interaction between Apple and Pralsetinib. 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.
Should I take Apple and Pralsetinib at the same time of day?
At least one FDA label for a product containing Pralsetinib says to take it on an empty stomach, and supplements are usually taken with a meal — so taking them together at breakfast is the easy mistake. Where that applies, keep Pralsetinib on its own and move Apple to a meal later in the day. Food instructions belong to the product rather than the ingredient, so check the directions on your own box. This is about absorption, not an interaction.
Are Apple and Pralsetinib used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Apple in each. That is a conversation for your prescriber, especially if Pralsetinib is being adjusted to a target.
How was the Apple and Pralsetinib combination checked?
Interactions in our licensed database are recorded against drug classes. Pralsetinib is filed under 5 classifications, and Apple has documented interactions with 7 drug classes — none of Pralsetinib'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 Apple interact with any other medications?
Yes. Apple has 300 documented drug interactions in our database — Pralsetinib 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 Pralsetinib interact with any supplements?
Yes. Pralsetinib has documented interactions with 181 supplements in our database — Apple is not one of them. The Pralsetinib 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

Apple monograph Uses, safety profile, and every drug interaction in one place Pralsetinib drug information The full plain-English guide to this medication Pralsetinib supplement interactions Every supplement checked against Pralsetinib, 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 16 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Pralsetinib and Apple?

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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.