Tart Cherry 900 mg Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Tart Cherry 900 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Tart Cherry 900 mg is a dietary supplement by KRK Supplements with 1 active ingredient. Its ingredients are commonly taken for muscle soreness after exercise, gout and joint discomfort, sleep support.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.
HelloPharmacist Scorecard of Tart Cherry 900 mg by KRK Supplements
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product contains one active ingredient: tart cherry extract at 900 mg per capsule. Tart cherry (also called sour cherry) is a concentrated form of the whole fruit, which you might recognize as juice or dried berries.
The capsule itself is made with gelatin, microcrystalline cellulose (a plant-based binder), and magnesium stearate (a flow agent).
Does it work?
Not established
The evidence for tart cherry is mixed. It's rated possibly effective for athletic performance — meaning some studies suggest a benefit, but more work is needed to be sure.
For attention deficit-hyperactivity disorder (ADHD), cognitive function, exercise-related muscle soreness, exercise-related infections, and fibromyalgia, the data we have isn't enough to rate it either way. If you're considering this for one of those other uses, talk with your pharmacist about what the research actually shows for your specific goal.
How safe is it?
Well-documented data
Tart cherry from whole fruit or juice is generally well tolerated as food. Concentrated supplements like this one are less studied, so use some caution.
The most common side effects are abdominal pain, stomach upset, loose stools, and low energy, though they tend to be mild. One case of a possible allergic skin reaction to a specific tart cherry juice product has been reported.
Because concentrated supplements don't have as much safety data as the whole fruit, the facts advise caution — especially if you have a sensitive stomach.
Meds to double-check
No known interactions
No interactions are documented in our data for tart cherry extract. That said, it's always smart to check your specific medications using the tool on this page, especially if you take anything for stomach conditions or bleeding.
The bottom line
Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. No medication interactions are currently documented, and safety information is well characterized.
If you're an athlete looking to recover better or just interested in tart cherry's antioxidant benefits, this may be worth trying. Start with one capsule and see how your stomach handles it, since gastrointestinal upset is the main side effect to watch for.
Talk with your pharmacist if you have any stomach conditions or are pregnant or breastfeeding.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Aug 22, 2025.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Tart Cherry 900 mg, straight from the product label.
| Brand | KRK Supplements |
|---|---|
| Barcode (UPC) | 610373852405 |
| Net contents | 90 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Aug 22, 2025 |
| DSLD ID | 337334 |
| Product type | Botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Women (not pregnant or lactating) |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Tart Cherry 900 mg by KRK Supplements, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Tart Cherry extract | 900 mg | -- |
Other ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions
Suggested use - For adults, take two (2) capsules daily as a dietary supplement.
Precautions
Warning - Not intended for persons under 18 years of age. Caution - Keep out of reach of children.
Consult your physician before using this or any dietary supplement. Do not use if safety seal is broken.
Do not use if you are pregnant or nursing or at risk of or being treated for high blood pressure and heart disease.
Storage
Store in cool dry place, avoid excessive heat.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease, but rather a dietary supplement intended for nutritional support.
Formula
Tart cherry 900mg serving
Formulation
Support healthy joint function Supports balanced healthy uric acid levels Antioxidant & anti-inflammatory properties
Non GMO
FDA Statement of Identity
Dietary Supplement
Seals/Symbols
Made in USA GMP Facility
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Tart Cherry 900 mg by KRK Supplements label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Tart Cherry 900 mg by KRK Supplements
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container45 Amounts shown are per serving.
Tart Cherry extract
No knowninteractions
Sour cherry (often sold as tart cherry or Montmorency cherry) is a fruit-based supplement rich in antioxidants that people use for muscle recovery, jo...
Tart Cherry extract monograph & interactionsOther (inactive) ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.
Tart Cherry 900 mg by KRK Supplements Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in Tart Cherry 900 mg. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.
Brand information
Manufacturer and brand details for Tart Cherry 900 mg, from the product label.
KRK Supplements
See all KRK Supplements products- Name
- KRK Supplements
- Street Address
- PO Box 380494
- City
- Clinton TWP
- State
- MI
- ZipCode
- 48038-0066
- Web Address
- www.krksupplement.com
Tart Cherry 900 mg by KRK Supplements: Common Questions
Does Tart Cherry 900 mg by KRK Supplements interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is tart cherry safe to take if I'm pregnant or breastfeeding?
What are the most common side effects?
Does tart cherry actually help with muscle soreness after workouts?
Will this help with ADHD or focus?
Can I take this if I have a cherry allergy?
What's the difference between whole tart cherries and this extract?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Tart Cherry 900 mg is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Tart Cherry 900 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Tart Cherry 900 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 4 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Sour Cherry 4 references
- 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
- 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
- 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.
- 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
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