Drug & supplement interaction

Cupping + Phenytoin

Phenytoin brand names: Dilantin Kapseals, Dilantin, Di-Phen, Dilantin Infatabs, Phenytek, and others.

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 Cupping and Phenytoin 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

Cupping and Phenytoin

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 Phenytoin and Cupping in our sources. This does not guarantee that the combination is completely free of risk — research on Cupping alongside specific medications may be limited.

Worth understanding: our licensed dataset holds no drug-interaction record for Cupping at all — not against Phenytoin, 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.

Cupping is a treatment rather than something you take. Tell whoever provides it which medicines you use, and ask your prescriber whether it is appropriate for your health and treatment. 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.

Cupping safety at a glance

Cupping overall Use caution Often low-risk when performed by a trained practitioner, but it can cause bruising, skin irritation, and rarely infection.
Pregnancy Use caution Avoid the abdomen and lower back, and only consider it with guidance from your doctor and a qualified practitioner.
Breastfeeding Use caution There is little safety data, so check with your healthcare provider before trying it.

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

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

No Interaction Found — But Data Suggests Cupping and Phenytoin 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 having Cupping while taking the medicine can make those effects more likely to turn up, and harder to pin on one or the other if they do. One of them is worth acting on rather than waiting out — marked below.

  • Anemia Worth acting on Additional detail

    Cupping

    “Two case reports show that cupping can precipitate hematoma, especially in susceptible patients such as those with a bleeding disorder. Anemia has occurred as a result of excessive bleeding from wet cupping.”

    Cupping · Natural Medicines adverse-effect record, reported in anemia.

    4 sources cited
    1. 27914. Michalsen A, Bock S, Ludtke R, et al. Effects of traditional cupping therapy in patients with carpal tunnel syndrome: a randomized controlled trial. J Pain 2009;10(6):601-8. PubMed
    2. 96588. Fruchtman Y, Dardik R, Barg AA, et al. Spinal Epidural Hematoma Following Cupping Glass Treatment in an Infant With Hemophilia A. Pediatr Blood Cancer. 2016 Jun;63(6):1120-2. PubMed
    3. 99205. Jing-Chun Z, Jia-Ao Y, Chun-Jing X, Kai S, Lai-Jin L. Burns induced by cupping therapy in a burn center in northeast china. Wounds. 2014;26(7):214-20.
    4. 99206. Benli AR, Aktas H. A complication of wet cupping therapy: vesiculobullous plaque on an erythematous base. J Integr Med. 2017;15(3):252-254. PubMed

    Phenytoin

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

  • Drowsiness / Fever / Headache Additional detail

    Cupping

    “Case reports suggest that cupping might cause vasovagal shock and fainting in some patients. This adverse effect may be treated by having patients sit or lie down for 5-10 minutes. Cupping may cause mild headache or sleepiness, both of which typically resolve within four hours.

    In a case report, a 54-year-old male patient reported to the emergency room with neck pain and fever due to an infected cervical spinal epidu…”

    Cupping · Natural Medicines adverse-effect record, reported in back pain.

    3 sources cited
    1. 27911. Farhadi K, Schwebel DC, Saeb M, et al. The effectiveness of wet-cupping for nonspecific low back pain in Iran: a randomized controlled trial. Complement Ther Med 2009;17(1):9-15. PubMed
    2. 27933. Lauche R, Cramer H, Choi KE, et al. The influence of a series of five dry cupping treatments on pain and mechanical thresholds in patients with chronic non-specific neck pain--a randomised controlled pilot study. BMC Complement Altern Med 2011;11:63. PubMed
    3. 96596. Yao Y, Hong W, Chen H, et al. Cervical spinal epidural abscess following acupuncture and wet-cupping therapy: A case report. Complement Ther Med. 2016;24:108-10. PubMed

    Phenytoin

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

Reported for Cupping but not commonly for Phenytoin: bleeding or bruising, back pain, a higher chance of infection and chills.

Effects for Phenytoin come from the ADVERSE REACTIONS section of its FDA label; effects for Cupping come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

From our Q&A

Questions About Cupping or Phenytoin

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

This page covers Cupping only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Phenytoin page lists 224 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: 1,4-butanediol (major), Activated Charcoal (major), Beer (major), Gamma-hydroxybutyrate (ghb) (major) and Kava (major).

By severity: 9 major · 187 moderate · 28 minor.

From our pharmacist’s overview on the Phenytoin page

“Phenytoin (Dilantin) is a seizure medicine with a narrow therapeutic index, meaning small changes in its blood level can bring seizures back or tip over into toxicity, so I treat its supplement list with real seriousness. The biggest group, 78 ingredients, piles on sedation, and alcohol, kava, and GHB all rate major for exactly that re…”

Reviewed by 2 · Jul 18, 2026

Open the Phenytoin interaction page

How much people look this up

Where Cupping and Phenytoin 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 Cupping
Steady interest

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

29 days ago today
Medication Phenytoin
Top 25%

#590 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 Cupping reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Cupping and Phenytoin 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 .
Treatment approach

About Cupping

What is Cupping?

  • Back and neck pain
  • Muscle tension and soreness
  • Headaches
  • Athletic recovery
  • General well-being and relaxation

Cupping is a traditional therapy that uses suction cups on the skin and is most often tried for muscle and back pain. The evidence is weak and mixed, and while it is generally low-risk when done by a trained practitioner, it commonly leaves temporary round bruises and is not a substitute for medical care.

Not applicable (Cupping is a therapy, not a plant or supplement) · Dry cupping, wet cupping (hijama), fire cupping, and massage (sliding) cupping

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

Cupping: dosing

There is no standardized dose or schedule for cupping. The number of cups, how long they stay on (often a few minutes up to around 10–15 minutes), and how often sessions are done vary by practitioner and the reason for treatment.If you decide to try cupping, choose a qualified, licensed practitioner, ask about their training and hygiene practices, and start conservatively.

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

Read the full Cupping monograph & all interactions
Medication

About Phenytoin

What Is Phenytoin Used For?

Brand names: Dilantin Kapseals, Dilantin, Di-Phen, Dilantin Infatabs, Phenytek, Dilantin injection

Phenytoin is used to treat and prevent seizures. The specific types covered depend on the formulation. Oral extended-release capsules (including Phenytek), chewable tablets (including Dilantin Infatabs and Phenytoin Infatabs), and oral suspension (including Dilantin-125) are used for tonic-clonic (grand mal) and psychomotor (temporal lobe) seizures; most oral forms also cover prevention and treatment of seizures occurring during or after neurosurgery. Chewable tablets and some capsule formulations also cover complex partial seizures.

Parenteral (injectable) phenytoin sodium is used for generalized tonic-clonic status epilepticus (a prolonged, life-threatening seizure emergency) and for prevention and treatment of seizures during neurosurgery. The IV form can also substitute short-term for oral phenytoin when a patient cannot take it by mouth.

Most-Reported Side Effects for Phenytoin

From FAERS, the FDA’s public side-effect reporting system (40,278 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Convulsion 3,522 reports
Seizure 3,095 reports
Toxicity to various agents 1,888 reports
Fall 1,604 reports
Dizziness 1,539 reports
See full Phenytoin drug information
Keep checking

Other Drugs & Cupping

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

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

Cupping References

The 15 references that drive our Cupping 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. Farhadi K, Schwebel DC, Saeb M, et al. The effectiveness of wet-cupping for nonspecific low back pain in Iran: a randomized controlled trial. Complement Ther Med 2009;17(1):9-15. PubMed
  2. Michalsen A, Bock S, Ludtke R, et al. Effects of traditional cupping therapy in patients with carpal tunnel syndrome: a randomized controlled trial. J Pain 2009;10(6):601-8. PubMed
  3. Cao H, Liu J, Lewith GT. Traditional Chinese Medicine for treatment of fibromyalgia: a systematic review of randomized controlled trials. J Altern Complement Med 2010;16(4):397-409. PubMed
  4. Lauche R, Cramer H, Choi KE, et al. The influence of a series of five dry cupping treatments on pain and mechanical thresholds in patients with chronic non-specific neck pain--a randomised controlled pilot study. BMC Complement Altern Med 2011;11:63. PubMed
  5. Cramer H, Lauche R, Hohmann C, et al. Randomized controlled trial of pulsating cupping (pneumatic pulsation therapy) for chronic neck pain. Forsch Komplementmed 2011;18(6):327-34. PubMed
  6. Lee JS, Ahn SK, Lee SH. Factitial panniculitis induced by cupping and acupuncture. Cutis 1995;55(4):217-8.
  7. Fruchtman Y, Dardik R, Barg AA, et al. Spinal Epidural Hematoma Following Cupping Glass Treatment in an Infant With Hemophilia A. Pediatr Blood Cancer. 2016 Jun;63(6):1120-2. PubMed
  8. Peng CZ, How CK. Bullae secondary to prolonged cupping. Am J Med Sci. 2013;346(1):65. PubMed
  9. Vender R, Vender R. Paradoxical, Cupping-Induced Localized Psoriasis: A Koebner Phenomenon. J Cutan Med Surg. 2015;19(3):320-2. PubMed
  10. Yao Y, Hong W, Chen H, et al. Cervical spinal epidural abscess following acupuncture and wet-cupping therapy: A case report. Complement Ther Med. 2016;24:108-10. PubMed
  11. Lauche R, Materdey S, Cramer H, et al. Effectiveness of home-based cupping massage compared to progressive muscle relaxation in patients with chronic neck pain--a randomized controlled trial. PLoS One. 2013;8(6):e65378. PubMed
  12. Jing-Chun Z, Jia-Ao Y, Chun-Jing X, Kai S, Lai-Jin L. Burns induced by cupping therapy in a burn center in northeast china. Wounds. 2014;26(7):214-20.
  13. Benli AR, Aktas H. A complication of wet cupping therapy: vesiculobullous plaque on an erythematous base. J Integr Med. 2017;15(3):252-254. PubMed
  14. Almeida Silva HJ, Barbosa GM, Scattone Silva R, et al. Dry cupping therapy is not superior to sham cupping to improve clinical outcomes in people with non-specific chronic low back pain: a randomised trial. J Physiother 2021;67(2):132-139. PubMed
  15. Alajmi T, Aljulaihim A, Alzahrani M, Aljuhayyiam S. Necrotizing Fasciitis Following Wet Cupping: A Case Report. Cureus 2021;13(3):e14039. 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

Having Cupping While Taking Phenytoin: Common Questions

Is it safe to have Cupping while taking Phenytoin?
We do not list a known interaction between Cupping and Phenytoin. 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 Cupping and Phenytoin have any of the same side effects?
Yes — our sources link each of them separately to 4 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.
Does Phenytoin interact with any supplements?
Yes. Phenytoin has documented interactions with 224 supplements in our database — Cupping is not one of them. The Phenytoin 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

Cupping monograph Uses, safety profile, and every drug interaction in one place Phenytoin drug information The full plain-English guide to this medication Phenytoin supplement interactions Every supplement checked against Phenytoin, 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 15 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Phenytoin and Cupping?

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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.