Drug & supplement interaction

Sour Cherry + Tadalafil

Tadalafil brand names: Cialis, Tadliq.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Sour Cherry and Tadalafil 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

Sour Cherry and Tadalafil

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 Tadalafil and Sour Cherry 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 Sour Cherry at all — not against Tadalafil, 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.

Sour Cherry safety at a glance

Sour Cherry overall Use caution Generally well tolerated as a food, but concentrated products are less studied.
Pregnancy Likely Safe When the fruit is consumed in typical food amounts. There is insufficient reliable information available about the safety of tart cherry fruit or stem when used... Read the full pregnancy detail
Breastfeeding Likely Safe When the fruit is consumed in typical food amounts. There is insufficient reliable information available about the safety of tart cherry fruit or stem when used... 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 Tadalafil and Sour Cherry? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Sour Cherry and Tadalafil May Share Several of the Same Side Effects

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.

  • Stomach upset / Stomach pain Additional detail

    Sour Cherry

    “In a clinical study, 29% of children who consumed 75 mL of tart cherry juice concentrate twice daily for 2 weeks reported abdominal pain. Two cases of loose stools after consumption of 90 whole tart cherries, and one case of gastrointestinal disturbance after drinking 10.5 ounces of tart cherry concentrate (Cherrish, Cherrish Corp.) twice daily for 14 days have been reported.”

    Sour Cherry · Natural Medicines adverse-effect record, reported in pain.

    4 sources cited
    1. 112815. Soltanifar A, Moharreri F, Bakhtiari E, Hosseinpour A. The Effect of Adding Sour Cherry Concentrate to The Usual Treatment of Attention Deficit Hyperactivity Disorder In 6 To 12 Years Old Children. J Atten Disord 2023;27(2):214-219. PubMed
    2. 93186. Seymour EM, Warber SM, Kirakosyan A, et al. Anthocyanin pharmacokinetics and dose-dependent plasma antioxidant pharmacodynamics following whole tart cherry intake in healthy humans. J Funct Food 2014;11:509-16. DOI
    3. 93192. Elliot DL, Kuehl KS, Jones KD, Dulacki K. Using an eccentric exercise-testing protocol to assess the beneficial effects of tart cherry juice in fibromyalgia patients. Integ Med 2010;9(6):25-9.
    4. 93160. Schumacher HR, Pullman-Mooar S, Gupta SR, et al. Randomized double-blind crossover study of the efficacy of a tart cherry juice blend in treatment of osteoarthritis (OA) of the knee. Osteoarthritis Cartilage 2013;21(8):1035-41. PubMed

    Tadalafil

    Listed in the ADVERSE REACTIONS section of the FDA label for Tadalafil. Read the label on DailyMed ›

Reported for Sour Cherry but not commonly for Tadalafil: diarrhea and tiredness.

Effects for Tadalafil come from the ADVERSE REACTIONS section of its FDA label; effects for Sour Cherry come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 98,103 voluntary FDA FAERS reports for Tadalafil 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

Sour Cherry in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Safe

When the fruit is consumed in typical food amounts. There is insufficient reliable information available about the safety of tart cherry fruit or stem when used in medicinal amounts; avoid using.

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

Overlapping uses

What Tadalafil Is Prescribed For, and What Sour Cherry Has Been Studied For

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

Tadalafil is prescribed for: Tadalafil tablets (including Cialis and generic tadalafil) are used to treat erectile dysfunction (ED), the symptoms of benign prostatic hyperplasia (BPH — an enlarged prostate), or both conditions together. When used with the drug finasteride to start BPH treatment, this combination is recommended for up to 26 weeks. Adcirca, Alyq (tablets), and Tadliq (oral suspension) are indicated specifically for pulmonary arterial hypertension (PAH — high blood pressure in the lungs), to improve the ability to exercise.

Sour Cherry has been studied for:

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

    Sour Cherry for hypertension

    It is unclear if oral tart cherry juice reduces blood pressure; research is conflicting.

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 Tadalafil on your own; if you are taking Sour Cherry for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Sour Cherry or Tadalafil

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

This page covers Sour Cherry only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Tadalafil page lists 144 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Mistletoe (major), Grapefruit (major), Hawthorn (major) and St. John's Wort (major).

By severity: 5 major · 98 moderate · 41 minor.

From our pharmacist’s overview on the Tadalafil page

“Grapefruit juice is the first thing to know about if you take tadalafil (Cialis, Tadliq). It blocks CYP3A4, the enzyme that clears the drug, so blood levels climb and side effects like a steep drop in blood pressure become more likely.”

Reviewed by 2 · Jul 18, 2026

Open the Tadalafil interaction page

One more smart check

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

We hold 1,479 real supplement products containing Sour Cherry, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Sour Cherry. Even though Sour Cherry itself has no known interaction with Tadalafil, 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 Sour Cherry and Tadalafil 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 Sour Cherry
Top 25%

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

29 days ago today
Medication Tadalafil
Top 1%

#16 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 Sour Cherry reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Sour Cherry and Tadalafil 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 Sour Cherry

What is Sour Cherry?

  • Muscle soreness after exercise
  • Gout and joint discomfort
  • Sleep support
  • Arthritis pain
  • General antioxidant support

Sour cherry (often sold as tart cherry or Montmorency cherry) is a fruit-based supplement rich in antioxidants that people use for muscle recovery, joint and gout symptoms, and sleep. Early research is promising but limited, so it is not a proven treatment. It is generally well tolerated as a food, but talk to your pharmacist or doctor before using concentrated products.

Prunus cerasus · Rosaceae · Fruit (and fruit juice or concentrate) · Juice, concentrate, capsules, powder, dried fruit, extract

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

Sour Cherry: dosing

There is no official or standardized dose for sour cherry supplements. Studies have used different forms and amounts, including juice, concentrate, and capsules, so there is no single agreed-upon dose.The best approach is to follow the directions on the product label and not exceed them.

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

Read the full Sour Cherry monograph & all interactions
Medication

About Tadalafil

What Is Tadalafil Used For?

Brand names: Cialis, Tadliq

Tadalafil tablets (including Cialis and generic tadalafil) are used to treat erectile dysfunction (ED), the symptoms of benign prostatic hyperplasia (BPH — an enlarged prostate), or both conditions together. When used with the drug finasteride to start BPH treatment, this combination is recommended for up to 26 weeks.

Adcirca, Alyq (tablets), and Tadliq (oral suspension) are indicated specifically for pulmonary arterial hypertension (PAH — high blood pressure in the lungs), to improve the ability to exercise.

Most-Reported Side Effects for Tadalafil

From FAERS, the FDA’s public side-effect reporting system (99,210 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Dyspnea 11,917 reports
Headache 10,982 reports
Diarrhea 8,020 reports
Nausea 6,697 reports
Fatigue 6,080 reports
See full Tadalafil drug information
Keep checking

Other Drugs & Sour Cherry

Browse every other medication we’ve checked against Sour Cherry — 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 Sour Cherry 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 Sour Cherry list.

See the full Sour Cherry interactions page
See every supplement checked against Tadalafil, ranked by severity
Evidence & sources

Sour Cherry References

The 4 references that drive our Sour Cherry 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. Schumacher HR, Pullman-Mooar S, Gupta SR, et al. Randomized double-blind crossover study of the efficacy of a tart cherry juice blend in treatment of osteoarthritis (OA) of the knee. Osteoarthritis Cartilage 2013;21(8):1035-41. PubMed
  2. Seymour EM, Warber SM, Kirakosyan A, et al. Anthocyanin pharmacokinetics and dose-dependent plasma antioxidant pharmacodynamics following whole tart cherry intake in healthy humans. J Funct Food 2014;11:509-16. DOI
  3. Elliot DL, Kuehl KS, Jones KD, Dulacki K. Using an eccentric exercise-testing protocol to assess the beneficial effects of tart cherry juice in fibromyalgia patients. Integ Med 2010;9(6):25-9.
  4. Soltanifar A, Moharreri F, Bakhtiari E, Hosseinpour A. The Effect of Adding Sour Cherry Concentrate to The Usual Treatment of Attention Deficit Hyperactivity Disorder In 6 To 12 Years Old Children. J Atten Disord 2023;27(2):214-219. 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 Sour Cherry and Tadalafil Together: Common Questions

Is it safe to take Sour Cherry with Tadalafil?
We do not list a known interaction between Sour Cherry and Tadalafil. 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 Sour Cherry and Tadalafil have any of the same side effects?
Yes — our sources link each of them separately to 2 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.
Are Sour Cherry and Tadalafil 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 Sour Cherry in each. That is a conversation for your prescriber, especially if Tadalafil is being adjusted to a target.
Does Tadalafil interact with any supplements?
Yes. Tadalafil has documented interactions with 144 supplements in our database — Sour Cherry is not one of them. The Tadalafil 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

Sour Cherry monograph Uses, safety profile, and every drug interaction in one place Tadalafil drug information The full plain-English guide to this medication Tadalafil supplement interactions Every supplement checked against Tadalafil, 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 Tadalafil and Sour Cherry?

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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.