Secretin + Quetiapine
Quetiapine brand names: Seroquel, Dopaquel.
We found no known interaction between Secretin and Quetiapine 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 label for Quetiapine states a food rule worth keeping to, and 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.
Secretin and Quetiapine
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 Quetiapine and Secretin 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 Secretin at all — not against Quetiapine, 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.
Secretin safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Some Quetiapine Products Have a Food Rule — Secretin Should Not Break It
At least one FDA label for a product containing Quetiapine says to take it on an empty stomach. Most supplements — Secretin included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Quetiapine on its own and move Secretin to a meal later in the day.
This may not be true of your version. Food instructions belong to the product, not the ingredient: two Quetiapine products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.
It is recommended that SEROQUEL XR be taken without food or with a light meal (approximately 300 calories) [see Clinical Pharmacology (12.3) ].
From the Dosage and Administration section of the FDA label we read for Quetiapine — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›
A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.
What Quetiapine Is Prescribed For, and What Secretin Has Been Studied For
These two come up together because they touch the same health topic — not because they do the same job. Quetiapine is a prescription medicine with approved uses on its FDA label. Secretin is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.
Quetiapine is prescribed for: Quetiapine treats schizophrenia and bipolar disorder in adults and certain age groups of children and adolescents. For bipolar disorder, it is approved for manic episodes (both as a stand-alone treatment and alongside lithium or divalproex) and for depressive episodes. The extended-release form of quetiapine is also approved as add-on therapy for major depressive disorder (MDD) in adults who are already taking an antidepressant. The regular tablet form is not approved for this use.
Secretin has been studied for:
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Schizophrenia studied, not established Secretin has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows
Secretin for schizophrenia
A small clinical study in patients with refractory schizophrenia shows that receiving a single infusion of porcine secretin does not improve symptoms when compared with placebo.
1 source cited
- 100743. Sheitman BB, Knable MB, Jarskog LF, et al. Secretin for refractory schizophrenia. Schizophr Res. 2004;66(2-3):177-81. PubMed
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 Quetiapine on your own; if you are taking Secretin for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.
Questions About Secretin or Quetiapine
These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Secretin or Quetiapine, 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:
- Can You Split Seroquel Tablets? ›
- Accidentally Took Two Seroquel During The Day Instead Of One ›
- Seroquel - Mirapex Interaction Details ›
Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.
See Every Supplement That Interacts With Quetiapine
This page covers Secretin only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Quetiapine page lists 199 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 · 147 moderate · 41 minor.
From our pharmacist’s overview on the Quetiapine page
“Quetiapine (Seroquel) treats schizophrenia and bipolar disorder, illnesses where an unplanned swing in the drug's blood level has real consequences, and that is why these 199 supplement interactions deserve a careful read rather than a shrug. Most of the risk runs through CYP3A4, the liver enzyme that clears quetiapine: grapefruit bloc…”
Reviewed by 2 · Jul 18, 2026
Where Secretin and Quetiapine 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.
#839 of 1,452 supplements looked up here in the last 7 days
#38 of 2,830 medications looked up here in the last 7 days
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 Secretin reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Secretin and Quetiapine 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.
About Secretin
What is Secretin?
- Diagnostic testing of pancreas function
- Diagnosing gastrinoma (Zollinger-Ellison syndrome)
- Aiding pancreatic imaging procedures
- Investigational use in autism (not proven)
Secretin is a natural digestive hormone, not a typical dietary supplement. As a medicine it is an FDA-approved injectable used mainly for diagnostic tests of the pancreas, and it must be given by a healthcare professional. Despite past interest, there is strong evidence that secretin does NOT help autism, and it should never be self-administered.
Hormone produced naturally in the small intestine; pharmaceutical versions are made synthetically or from animal sources · Injectable solution (prescription, used in medical settings)
An interaction check asks whether these two react with each other — it does not ask whether Secretin is a good idea for someone in your situation. Here is what our Secretin record says about it on its own.
Secretin: dosing
There is no general supplement dose for secretin because it is not used as a supplement. It is a prescription injectable, and the dose is calculated by your healthcare provider based on your body and the specific test being done.You should never try to obtain or self-administer secretin. Dosing, timing, and monitoring are all handled by trained medical staff during a procedure.
From our Secretin monograph — the full record covers uses, side effects and every documented interaction.
About Quetiapine
What Is Quetiapine Used For?
Brand names: Seroquel, Dopaquel
Quetiapine treats schizophrenia and bipolar disorder in adults and certain age groups of children and adolescents. For bipolar disorder, it is approved for manic episodes (both as a stand-alone treatment and alongside lithium or divalproex) and for depressive episodes.
The extended-release form of quetiapine is also approved as add-on therapy for major depressive disorder (MDD) in adults who are already taking an antidepressant. The regular tablet form is not approved for this use.
Other Drugs & Secretin
Browse every other medication we’ve checked against Secretin — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked Secretin against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Testosterone ›
- Losartan Potassium ›
- Metoprolol ›
- Aspirin ›
- Ivermectin ›
- Rivaroxaban ›
- Rosuvastatin ›
- Escitalopram ›
- Tadalafil ›
- Acetaminophen ›
- Clopidogrel ›
- Valacyclovir ›
- Atorvastatin ›
- Docusate ›
- Hydroxyurea ›
- Abemaciclib ›
- Methamphetamine ›
- Ibuprofen ›
- Sumatriptan ›
- Semaglutide ›
- Tirzepatide ›
- Warfarin Sodium ›
- Prednisone ›
- Propranolol ›
- Lisdexamfetamine ›
- Acyclovir ›
- Bupropion ›
- Metformin ›
- Amoxicillin ›
- Lisinopril ›
- Bendamustine ›
- Amitriptyline ›
- Doxycycline ›
- Lamotrigine ›
- Fluoxetine ›
- Methotrexate ›
- Acetaminophen, Codeine ›
- Gabapentin ›
- Amphetamine ›
- Pregabalin ›
- Isotretinoin ›
- Dextroamphetamine ›
- Azithromycin ›
- Clonazepam ›
- Omeprazole ›
- Amlodipine Besylate ›
- Methylene Blue ›
- Duloxetine ›
- Letrozole ›
- Buspirone ›
- Citalopram ›
- Ciprofloxacin ›
- Naproxen ›
- Bisoprolol ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Secretin list.
Secretin References
The 14 references that drive our Secretin 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.
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Horvath K, Stefatos G, Sokolski KN. Improved social and language skills after secretin administration. J Assoc Acad Minor Phys 1998;9:9-15.
- Tympner F, Rosch W. The treatment of chronic recurrent pancreatitis with depot secretin-a preliminary report. Hepatogastroenterology 1986;33:159-62.
- Coniglio SJ, Lewis JD, Lang C, et al. A randomized, double-blind, placebo-controlled trial of single-dose intravenous secretin as treatment for children with autism. J Pediatr 2001;138:649-55. PubMed
- Secretin for the treatment of autism. Pharmacist's Letter/Prescriber's Letter 1998;14(12):141212.
- Sandler AD, Sutton KA, DeWeese J, et al. Lack of benefit of a single dose of synthetic human secretin in the treatment of autism and pervasive developmental disorder. N Engl J Med 1999;341(24):1801-6. PubMed
- Lightdale JR, Hayer C, Duer A, et al. Effects of intravenous secretin on language and behavior of children with autism and gastrointestinal symptoms: a single-blinded, open-label pilot study. Pediatrics 2001;108:90. PubMed
- Roberts W, Weaver L, Brian J, et al. Repeated doses of porcine secretin in the treatment of autism: A randomized, placebo-controlled trial. Pediatrics 2001;107:e71. PubMed
- Honomichl RD, Goodlin-Jones BL, Burnham MM, Hansen RL, Anders TF. Secretin and sleep in children with autism. Child Psychiatry Hum Dev. 2002;33(2):107-23. PubMed
- Law R, Vargo JJ, Stevens T. Acute pancreatitis and aspiration pneumonia after administration of synthetic human secretin (with video). Gastrointest Endosc. 2011;74(5):1166-8. PubMed
- Sheitman BB, Knable MB, Jarskog LF, et al. Secretin for refractory schizophrenia. Schizophr Res. 2004;66(2-3):177-81. PubMed
- Levenick JM, Andrews CL, Purich ED, Gordon SR, Gardner TB. A phase II trial of human secretin infusion for refractory type B pain in chronic pancreatitis. Pancreas. 2013;42(4):596-600. PubMed
- Williams K, Wray JA, Wheeler DM. Intravenous secretin for autism spectrum disorders (ASD). Cochrane Database Syst Rev. 2012;2012(4):CD003495. PubMed
- Brandler J, Miller LJ, Wang XJ, et al. Secretin effects on gastric functions, hormones and symptoms in functional dyspepsia and health: randomized crossover trial. Am J Physiol Gastrointest Liver Physiol 2020;318(4):G635-G645. 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.
Taking Secretin and Quetiapine Together: Common Questions
Is it safe to take Secretin with Quetiapine?
Do Secretin and Quetiapine have any of the same side effects?
Should I take Secretin and Quetiapine at the same time of day?
Are Secretin and Quetiapine used for the same thing?
Does Quetiapine interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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.