Drug & supplement interaction

Dash Diet + Thioridazine

Thioridazine brand name: Mellaril.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Dash Diet 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.

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Interaction report

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

Worth understanding: our licensed dataset holds no drug-interaction record for Dash Diet 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.

Dash Diet is an eating pattern rather than something you take. Ask your pharmacist or doctor before changing how you eat while on a prescribed medicine: some medicines are dosed around meals, and a change in diet can change how they work. 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.

Dash Diet safety at a glance

Dash Diet overall Generally safe For most people DASH is a safe, balanced way of eating that supports heart health.
Pregnancy Possibly Safe When used appropriately, short-term. DASH diets have been used with apparent safety during pregnancy for 4-12 weeks. A modified DASH diet called MAMA-DASH, with... Read the full pregnancy detail
Breastfeeding Possibly Safe When used appropriately while breastfeeding for up to 6 months. The DASH diet is a balanced diet that is not expected to be harmful during breastfeeding. Observ... 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 Thioridazine and Dash Diet? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Thioridazine’s Own FDA Label Lists

This is not an interaction — none of it involves Dash Diet. These are the most notable effects listed in the ADVERSE REACTIONS section of Thioridazine’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you follow Dash Diet and take the medicine. 10 of them are worth acting on rather than waiting out — marked below.

  • A bowel blockage Worth acting on
  • Yellowing of the skin or eyes Worth acting on
  • Wheezing Worth acting on
  • An irregular heartbeat Worth acting on
  • Confusion Worth acting on
  • Low mood Worth acting on
  • A low platelet count Worth acting on
  • Anemia Worth acting on
  • A low white blood cell count Worth acting on
  • Liver problems Worth acting on

Showing the 10 most notable of 33 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Thioridazine. Read the label on DailyMed › Dash Diet’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Dash Diet side to compare — that is a limit of the record, not a statement that Dash Diet has no side effects.

Special populations

Dash Diet in Pregnancy & Breastfeeding

Pregnancy Possibly Safe

When used appropriately, short-term. DASH diets have been used with apparent safety during pregnancy for 4-12 weeks. A modified DASH diet called MAMA-DASH, with adequate nutrition and calories for pregnancy, has been used for 20 weeks without reports of adverse events.

Lactation Possibly Safe

When used appropriately while breastfeeding for up to 6 months. The DASH diet is a balanced diet that is not expected to be harmful during breastfeeding. Observational research in exclusively breastfed infants has found that high adherence to the DASH diet for 4-6 months while breastfeeding is not associated with changes in infant weight, height, or head circumference when compared with low adherence to the DASH diet.

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

From our Q&A

Questions About Dash Diet 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 Dash Diet 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 Dash Diet 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 Dash Diet 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 Dash Diet
Steady interest

#1,091 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 Dash Diet reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Dash Diet and Thioridazine records this page draws on were last updated July 11, 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 .
Eating pattern

About Dash Diet

What is Dash Diet?

  • High blood pressure
  • Heart health
  • Lowering cholesterol
  • Weight management
  • Healthy eating pattern

The DASH (Dietary Approaches to Stop Hypertension) diet is an eating plan rich in fruits, vegetables, whole grains, and low-fat dairy, with less salt, red meat, and added sugar. It is one of the best-studied diets for lowering blood pressure and is widely recommended by doctors and dietitians. It is a food-based lifestyle plan, not a pill or supplement.

Eating pattern (whole-food diet plan)

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

Dash Diet: dosing

There is no pill or standardized "dose" for DASH, since it is an eating pattern rather than a supplement. Instead, the plan suggests target servings each day from food groups like vegetables, fruits, grains, dairy, lean protein, and a limited amount of fats and sweets.Sodium goals are usually set at a moderate level, and there is a lower-sodium version that may lower blood pressure even more. The exact amounts depend on your calorie needs, age, and health goals.A registered dietitian or your pharmacist can help you tailor the plan to your needs. Free DASH guides are also available from the NIH and National Heart, Lung, and Blood Institute.

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

Read the full Dash Diet 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 & Dash Diet

Browse every other medication we’ve checked against Dash Diet — 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
No interaction 2,829 drugs checked — show the list
Evidence & sources

Dash Diet References

The 3 references that drive our Dash Diet 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. Van Horn L, Peaceman A, Kwasny M, et al. Dietary Approaches to Stop Hypertension Diet and Activity to Limit Gestational Weight: Maternal Offspring Metabolics Family Intervention Trial, a Technology Enhanced Randomized Trial. Am J Prev Med. 2018;55(5):603- PubMed
  2. Li S, Gan Y, Chen M, et al. Effects of the dietary approaches to stop hypertension (DASH) on pregnancy/neonatal outcomes and maternal glycemic control: A systematic review and meta-analysis of randomized clinical trials. Complement Ther Med. 2020 Nov;54:1 PubMed
  3. Jahangir F, Daneshzad E, Moradi M, Maraci MR, Surkan PJ, Azadbakht L. No association between infant growth and adherence to the dietary approaches to stop hypertension (DASH) diet in lactating women. Nutr Health 2022. 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

Following Dash Diet While Taking Thioridazine: Common Questions

Is it safe to follow Dash Diet while taking Thioridazine?
We do not list a known interaction between Dash Diet 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.
Does Thioridazine interact with any supplements?
Yes. Thioridazine has documented interactions with 168 supplements in our database — Dash Diet 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

Still Have a Question About Thioridazine and Dash Diet?

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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.