Drug & supplement interaction

Stem Cell Therapy + Thioridazine

Thioridazine brand name: Mellaril.

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 Stem Cell Therapy and Thioridazine 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

Stem Cell Therapy and Thioridazine

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

Worth understanding: our licensed dataset holds no drug-interaction record for Stem Cell Therapy at all — not against Thioridazine, 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.

Stem Cell Therapy 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.

Stem Cell Therapy safety at a glance

Stem Cell Therapy overall Use caution Proven uses exist, but most marketed stem cell treatments are unproven and can carry serious risks.
Pregnancy Avoid Unproven stem cell treatments should be avoided during pregnancy unless medically necessary and supervised by specialists.
Breastfeeding Avoid Avoid elective stem cell procedures while breastfeeding; safety has not been established.

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

Still wondering about combining Thioridazine and Stem Cell Therapy? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Stem Cell Therapy and Thioridazine 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 Stem Cell Therapy 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. 2 of them are worth acting on rather than waiting out — marked below.

  • Liver problems Worth acting on Additional detail

    Stem Cell Therapy

    “Injected direct-to-consumer stem cell preparations have been associated with reports of sepsis, pneumonia, necrotizing ulcers, meningitis, and other infections. Intra-articular injections of contaminated stem cells have resulted in mutiple cases of infections, most of which were bloodstream infections.”

    Stem Cell Therapy · Natural Medicines adverse-effect record, reported in cirrhosis.

    3 sources cited
    1. 99561. Perkins KM, Spoto S, Rankin DA, et al. Notes from the Field: Infections After Receipt of Bacterially Contaminated Umbilical Cord Blood-Derived Stem Cell Products for Other Than Hematopoietic or Immunologic Reconstitution - United States, 2018. MMWR Morb M
    2. 99543. Bauer G, Elsallab M, Abou-El-Enein M. Concise Review: A Comprehensive Analysis of Reported Adverse Events in Patients Receiving Unproven Stem Cell-Based Interventions. Stem Cells Transl Med. 2018;7(9):676-685. PubMed
    3. 109539. Richardson E, Project Director. Harms linked to unapproved stem cell interventions highlight need for greater FDA enforcement. The Pew Charitable Trusts Brief. June 2021. Available at: https://www.pewtrusts.org/en/research-and-analysis/issue-briefs/2021/0

    Thioridazine

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

  • An allergic reaction Worth acting on Additional detail

    Stem Cell Therapy

    “Injections of direct-to-consumer or commercial stem cell preparations have been associated with reports of cardiac arrest, myocardial infarction, arrhythmias, pulmonary embolism, venous thromboembolism, skin growths, cancer, sepsis, pneumonia, necrotizing ulcers, meningitis and other infections, allergic reactions, Graft-versus-host disease (GVHD), stroke, hemorrhage, paraplegia, pain, blindness, and death.

    Intravitr…”

    Stem Cell Therapy · Natural Medicines adverse-effect record, reported in arrhythmia.

    5 sources cited
    1. 99543. Bauer G, Elsallab M, Abou-El-Enein M. Concise Review: A Comprehensive Analysis of Reported Adverse Events in Patients Receiving Unproven Stem Cell-Based Interventions. Stem Cells Transl Med. 2018;7(9):676-685. PubMed
    2. 99731. Zahid MF, Murad MH, Litzow MR, et al. Venous thromboembolism following hematopoietic stem cell transplantation-a systematic review and meta-analysis. Ann Hematol. 2016;95(9):1457-64. PubMed
    3. 109539. Richardson E, Project Director. Harms linked to unapproved stem cell interventions highlight need for greater FDA enforcement. The Pew Charitable Trusts Brief. June 2021. Available at: https://www.pewtrusts.org/en/research-and-analysis/issue-briefs/2021/0
    4. 99542. Ansari ZA, Kuriyan AE, Albini TA. Unproven stem cell therapy for macular degeneration. Oncotarget. 2017;8(53):90636-90637. PubMed
    5. 99555. Kuriyan AE, Albini TA, Townsend JH, et al. Vision Loss after Intravitreal Injection of Autologous "Stem Cells" for AMD. N Engl J Med. 2017;376(11):1047-1053. PubMed

    Thioridazine

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

Reported for Stem Cell Therapy but not commonly for Thioridazine: a severe skin reaction, blood clots, a heart attack and loss of bladder control.

Effects for Thioridazine come from the ADVERSE REACTIONS section of its FDA label; effects for Stem Cell Therapy 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 Stem Cell Therapy or Thioridazine

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

This page covers Stem Cell Therapy only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Thioridazine page lists 168 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), Cesium (major) and Ephedra (major).

By severity: 11 major · 125 moderate · 32 minor.

From our pharmacist’s overview on the Thioridazine page

“Thioridazine (Mellaril) is an older antipsychotic already known for disturbing the heart's rhythm, and the supplements that worry me most here do the same thing, stretching the QT interval further. Grapefruit in large amounts sits in that group, alongside ephedra and several other major-rated entries.”

Reviewed by 2 · Jul 18, 2026

Open the Thioridazine interaction page

How much people look this up

Where Stem Cell Therapy and Thioridazine 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 Stem Cell Therapy
Steady interest

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

29 days ago today
Medication Thioridazine
Steady interest

#2,091 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 Stem Cell Therapy reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Stem Cell Therapy and Thioridazine 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 Stem Cell Therapy

What is Stem Cell Therapy?

  • Joint and arthritis pain
  • Sports and orthopedic injuries
  • Anti-aging and wellness
  • Blood and immune disorders (proven medical uses)
  • Neurological conditions (experimental)

Stem cell therapy is a medical treatment, not a dietary supplement or herb. While some forms—like bone marrow transplants for blood cancers—are well-established and FDA-approved, most clinics offering stem cell injections for joints, aging, or chronic disease are selling unproven, sometimes risky treatments. Talk to a qualified doctor and be very cautious of clinics making big promises.

Stem cells (from bone marrow, blood, fat tissue, or umbilical cord) · Clinic-administered injections or infusions of cells

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

Stem Cell Therapy: dosing

There is no standard over-the-counter dose for stem cell therapy, because it is a medical procedure, not a supplement you buy and take at home. The type of cells, how they are prepared, and how they are given vary widely by treatment and clinic.For approved uses like transplants, dosing is carefully calculated by specialists based on the patient and condition. For unproven clinic treatments, there is no agreed-upon dose, and that lack of standardization is one reason these treatments are hard to judge for safety.Never accept a stem cell treatment based only on marketing.

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

Read the full Stem Cell Therapy monograph & all interactions
Medication

About Thioridazine

What Is Thioridazine Used For?

Brand name: Mellaril

Thioridazine Hydrochloride tablets are used for the management of schizophrenia — but only in patients who have already tried at least two other antipsychotic medications without adequate results, either because those drugs didn't work well enough or caused intolerable side effects.

Because thioridazine carries serious heart-rhythm risks, it is considered a last-resort option for schizophrenia, not a first-line treatment. It is not approved for dementia-related psychosis or any other psychiatric condition.

See full Thioridazine drug information
Keep checking

Other Drugs & Stem Cell Therapy

Browse every other medication we’ve checked against Stem Cell Therapy — 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 Stem Cell Therapy 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 Stem Cell Therapy list.

See the full Stem Cell Therapy interactions page
See every supplement checked against Thioridazine, ranked by severity
Evidence & sources

Stem Cell Therapy References

The 26 references that drive our Stem Cell Therapy 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. Ansari ZA, Kuriyan AE, Albini TA. Unproven stem cell therapy for macular degeneration. Oncotarget. 2017;8(53):90636-90637. PubMed
  2. Bauer G, Elsallab M, Abou-El-Enein M. Concise Review: A Comprehensive Analysis of Reported Adverse Events in Patients Receiving Unproven Stem Cell-Based Interventions. Stem Cells Transl Med. 2018;7(9):676-685. PubMed
  3. Berkowitz AL, Miller MB, Mir SA, et al. Glioproliferative Lesion of the Spinal Cord as a Complication of "Stem-Cell Tourism". N Engl J Med. 2016 Jul 14;375(2):196-8. PubMed
  4. Kuriyan AE, Albini TA, Townsend JH, et al. Vision Loss after Intravitreal Injection of Autologous "Stem Cells" for AMD. N Engl J Med. 2017;376(11):1047-1053. PubMed
  5. Perkins KM, Spoto S, Rankin DA, et al. Notes from the Field: Infections After Receipt of Bacterially Contaminated Umbilical Cord Blood-Derived Stem Cell Products for Other Than Hematopoietic or Immunologic Reconstitution - United States, 2018. MMWR Morb M
  6. Iijima H, Isho T, Kuroki, Takahashi, Aoyama. Effectiveness of mesenchymal stem cells for treating patients with knee osteoarthritis: a meta-analysis toward the establishment of effective regenerative rehabilitation. NPJ Regen Med. 2018;3:15. PubMed
  7. Sanapati J, Manchikanti L, Atluri S, et al. Do Regenerative Medicine Therapies Provide Long-Term Relief in Chronic Low Back Pain: A Systematic Review and Metaanalysis. Pain Physician. 2018;21(6):515-540. DOI
  8. Rocco M, Juri C. Is treatment with stem cells effective in Parkinson's disease? Medwave. 2018;18(5):e7242. PubMed
  9. Shah R, Latham SB, Khan SA, Shahreyar M, Hwang I, Jovin IS. A comprehensive meta-analysis of stem cell therapy for chronic angina. Clin Cardiol. 2018;41(4):525-531. PubMed
  10. Guo J, Dardik A, Fang K, Huang R, Gu Y. Meta-analysis on the treatment of diabetic foot ulcers with autologous stem cells. Stem Cell Res Ther. 2017;8(1):228. PubMed
  11. Nagpal A, Choy FC, Howell S, et al. Safety and effectiveness of stem cell therapies in early-phase clinical trials in stroke: a systematic review and meta-analysis. Stem Cell Res Ther. 2017;8(1):191. PubMed
  12. Qiu Y, Li MY, Feng T, et al. Systematic review with meta-analysis: the efficacy and safety of stem cell therapy for Crohn's disease. Stem Cell Res Ther. 2017;8(1):136. PubMed
  13. Sormani MP, Muraro PA, Schiavetti I, et al. Autologous hematopoietic stem cell transplantation in multiple sclerosis: A meta-analysis. Neurology. 2017;88(22):2115-2122. PubMed
  14. Gao W, Chen D, Liu G, Ran X. Autologous stem cell therapy for peripheral arterial disease: a systematic review and meta-analysis of randomized controlled trials. Stem Cell Res Ther. 2019;10(1):140. PubMed
  15. Fisher SA, Doree C, Mathur A, Taggart DP, Martin-Rendon E. Stem cell therapy for chronic ischaemic heart disease and congestive heart failure. Cochrane Database Syst Rev. 2016;12:CD007888. 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 Stem Cell Therapy While Taking Thioridazine: Common Questions

Is it safe to have Stem Cell Therapy while taking Thioridazine?
We do not list a known interaction between Stem Cell Therapy and Thioridazine. 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 Stem Cell Therapy and Thioridazine 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.
Does Thioridazine interact with any supplements?
Yes. Thioridazine has documented interactions with 168 supplements in our database — Stem Cell Therapy is not one of them. The Thioridazine 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

Stem Cell Therapy monograph Uses, safety profile, and every drug interaction in one place Thioridazine drug information The full plain-English guide to this medication Thioridazine supplement interactions Every supplement checked against Thioridazine, 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 26 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Thioridazine and Stem Cell Therapy?

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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.