Drug & supplement interaction

1,4-dmaa + Captopril, Hydrochlorothiazide

Captopril, Hydrochlorothiazide brand names: Capozide, Acezide.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between 1,4-dmaa and Captopril, Hydrochlorothiazide 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

1,4-dmaa and Captopril, Hydrochlorothiazide

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 Captopril, Hydrochlorothiazide and 1,4-dmaa 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.

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.

1,4-dmaa safety at a glance

1,4-dmaa overall Avoid Banned by the FDA and tied to serious cardiovascular harm; avoid use.
Pregnancy Avoid Not safe; powerful stimulants should be avoided during pregnancy.
Breastfeeding Avoid Not safe; avoid while breastfeeding.

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

Still wondering about combining Captopril, Hydrochlorothiazide and 1,4-dmaa? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Captopril, Hydrochlorothiazide

Interactions in our licensed database are recorded against drug classes, not just single drug names. Captopril, Hydrochlorothiazide is filed under 9 classifications — including ace inhibitors (aceis), thiazide diuretics, diuretic drugs. 1,4-dmaa has documented interactions with 1 drug class — the most serious being stimulant drugs (moderate) — and none of Captopril, Hydrochlorothiazide’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

1,4-dmaa Does Interact With Other Medications

1,4-dmaa has 172 moderate known drug interactions in our database — Captopril, Hydrochlorothiazide isn’t one of them. If you take anything else, check it against the full list below.

Moderate 172 No known interaction 2,658 (incl. Captopril, Hydrochlorothiazide)
Taking anything else?

Check Another of Your Medications Against 1,4-dmaa

Covers the 2,830 medications we’ve checked against 1,4-dmaa. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests 1,4-dmaa and Captopril, Hydrochlorothiazide May Share a Side Effect

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 taking both 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.

  • A stroke or mini-stroke Worth acting on Additional detail

    1,4-dmaa

    “Orally, clinical evidence on the safety of 1,4-DMAA is lacking, although it has demonstrated stimulant and vasoconstrictive effects in animal studies. A related stimulant called 1,3-DMAA has been linked to serious adverse events in humans, including lactic acidosis, hemorrhagic stroke, heat stroke, and death.”

    1,4-dmaa · Natural Medicines adverse-effect record, reported in stroke.

    6 sources cited
    1. 100692. Cohen PA, Travis JC, Keizers PHJ, Deuster P, Venhuis BJ. Four experimental stimulants found in sports and weight loss supplements: 2-amino-6-methylheptane (octodrine), 1,4-dimethylamylamine (1,4-DMAA), 1,3-dimethylamylamine (1,3-DMAA) and 1,3-dimethylbuty
    2. 17599. Vorce SP, Holler JM, Cawrse BM, Magluilo J. Dimethylamylamine: A drug causing positive immunoassay results for amphetamines. J Anal Toxicol 2011;35:183-7. PubMed
    3. 17660. Adverse Event Report. Jack3d. Natural MedWatch, May 28, 2011.
    4. 17662. Starling S. Synthetic geranium substance raises ephedra-like red flags. Nutraingredients-use.com, May 11, 2010. Available at: http://www.nutraingredients-usa.com/Industry/Synthetic-geranium-substance-raises-ephedra-like-red-flags. (Accessed 12 August 2011
    5. 17663. Gee P, Jackson S, Easton J. Another bitter pill: a case of toxicity from DMAA party pills. N Z Med J 2010;123:124-7.
    6. 17904. Removal of the dietary supplement DMAA. Army Medicine, Office of the Surgeon General, 2011. Available at: http://humanperformanceresourcecenter.org/dietary-supplements/files/dmaa-pdf. (Accessed 4 January 2012).

    Captopril, Hydrochlorothiazide

    Listed in the ADVERSE REACTIONS section of the FDA label for Captopril, Hydrochlorothiazide. Read the label on DailyMed ›

Effects for Captopril, Hydrochlorothiazide come from the ADVERSE REACTIONS section of its FDA label; effects for 1,4-dmaa 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.

Everything else you take

See Every Supplement That Interacts With Captopril, Hydrochlorothiazide

This page covers 1,4-dmaa only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Captopril, Hydrochlorothiazide page lists 236 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Asarabacca (major) and Dolomite (major).

By severity: 10 major · 199 moderate · 27 minor.

From our pharmacist’s overview on the Captopril, Hydrochlorothiazide page

“Someone taking Capozide (captopril with hydrochlorothiazide) for blood pressure is often the same person browsing the supplement aisle for heart health, and that is exactly where this list bites. Of the 236 ingredients on file, 10 are rated major, enough to make this a genuine safety review, not trivia.”

Reviewed by 2 · Jul 18, 2026

Open the Captopril, Hydrochlorothiazide interaction page

How much people look this up

Where 1,4-dmaa and Captopril, Hydrochlorothiazide 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 1,4-dmaa
Steady interest

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

29 days ago today
Medication Captopril, Hydrochlorothiazide
Top 25%

#472 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 1,4-dmaa reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The 1,4-dmaa and Captopril, Hydrochlorothiazide 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 .
Supplement

About 1,4-dmaa

What is 1,4-dmaa?

  • Energy and stimulation
  • Weight loss
  • Athletic performance
  • Focus and concentration

1,4-DMAA is a synthetic stimulant that the U.S. FDA has determined is not a legal dietary ingredient and considers unsafe in supplements. It has been linked to serious heart and blood pressure problems, and we recommend avoiding it entirely.

Synthetic chemical (not a true plant part) · Capsules, tablets, pre-workout powders

An interaction check asks whether these two react with each other — it does not ask whether 1,4-dmaa is a good idea for someone in your situation. Here is what our 1,4-dmaa record says about it on its own.

1,4-dmaa: dosing

There is no safe or established dose of 1,4-DMAA, and it is not a legal dietary ingredient in the United States. We do not recommend any amount.If you find a product that lists DMAA, 1,4-DMAA, or similar stimulant names on the label, do not take it, and consider reporting it.

From our 1,4-dmaa monograph — the full record covers uses, side effects and every documented interaction.

Read the full 1,4-dmaa monograph & all interactions
Medication

About Captopril and Hydrochlorothiazide

What Is Captopril and Hydrochlorothiazide Used For?

Brand names: Capozide, Acezide

Captopril and hydrochlorothiazide tablets are used to treat high blood pressure (hypertension). The two ingredients work together to lower blood pressure more effectively than either one alone.

This combination may be started as initial therapy or substituted when a patient has already been adjusted on both ingredients separately. It is approved for patients with normal kidney function, and is used more cautiously in those with impaired kidney function.

See full Captopril and Hydrochlorothiazide drug information
Keep checking

Other Drugs & 1,4-dmaa

Browse every other medication we’ve checked against 1,4-dmaa — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
172Moderate
0Minor
2,657No known interaction
172 Moderate 2,657 No interaction
Moderate

172 interactions

Showing 60 of 172 moderate interactions — see all 172 on the 1,4-dmaa page.

No interaction 2,657 drugs checked — show the list

We also checked 1,4-dmaa against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,657 medications checked with no known interaction — see the full 1,4-dmaa list.

See the full 1,4-dmaa interactions page
See every supplement checked against Captopril, Hydrochlorothiazide, ranked by severity
Evidence & sources

1,4-dmaa References

The 9 references that drive our 1,4-dmaa 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. Vorce SP, Holler JM, Cawrse BM, Magluilo J. Dimethylamylamine: A drug causing positive immunoassay results for amphetamines. J Anal Toxicol 2011;35:183-7. PubMed
  2. Adverse Event Report. Jack3d. Natural MedWatch, May 28, 2011.
  3. Starling S. Synthetic geranium substance raises ephedra-like red flags. Nutraingredients-use.com, May 11, 2010. Available at: http://www.nutraingredients-usa.com/Industry/Synthetic-geranium-substance-raises-ephedra-like-red-flags. (Accessed 12 August 2011
  4. Gee P, Jackson S, Easton J. Another bitter pill: a case of toxicity from DMAA party pills. N Z Med J 2010;123:124-7.
  5. Removal of the dietary supplement DMAA. Army Medicine, Office of the Surgeon General, 2011. Available at: http://humanperformanceresourcecenter.org/dietary-supplements/files/dmaa-pdf. (Accessed 4 January 2012).
  6. Archer JR, Dargan PI, Lostia AM, van der Walt J, Henderson K, Drake N, Sharma S, Wood DM, Walker CJ, Kicman AT. Running an unknown risk: a marathon death associated with the use of 1,3-dimethylamylamine (DMAA). Drug Test Anal. 2015 May;7(5):433-8. PubMed
  7. Eliason MJ, Eichner A, Cancio A, Bestervelt L, Adams BD, Deuster PA. Case reports: Death of active duty soldiers following ingestion of dietary supplements containing 1,3-dimethylamylamine (DMAA). Mil Med. 2012 Dec;177(12):1455-9. PubMed
  8. Palmer PG Jr. Deadly dimethylamylamine: "health" supplements are killing consumers while current regulations impede FDA action. J Leg Med. 2014;35(2):311-36. PubMed
  9. Cohen PA, Travis JC, Keizers PHJ, Deuster P, Venhuis BJ. Four experimental stimulants found in sports and weight loss supplements: 2-amino-6-methylheptane (octodrine), 1,4-dimethylamylamine (1,4-DMAA), 1,3-dimethylamylamine (1,3-DMAA) and 1,3-dimethylbuty

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

Taking 1,4-dmaa and Captopril, Hydrochlorothiazide Together: Common Questions

Is it safe to take 1,4-dmaa with Captopril, Hydrochlorothiazide?
We do not list a known interaction between 1,4-dmaa and Captopril, Hydrochlorothiazide. 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 1,4-dmaa and Captopril, Hydrochlorothiazide have any of the same side effects?
Yes — our sources link each of them separately to one 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.
How was the 1,4-dmaa and Captopril, Hydrochlorothiazide combination checked?
Interactions in our licensed database are recorded against drug classes. Captopril, Hydrochlorothiazide is filed under 9 classifications, and 1,4-dmaa has documented interactions with 1 drug class — none of Captopril, Hydrochlorothiazide's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does 1,4-dmaa interact with any other medications?
Yes. 1,4-dmaa has 172 documented drug interactions in our database — Captopril, Hydrochlorothiazide is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Captopril, Hydrochlorothiazide interact with any supplements?
Yes. Captopril, Hydrochlorothiazide has documented interactions with 236 supplements in our database — 1,4-dmaa is not one of them. The Captopril, Hydrochlorothiazide 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

1,4-dmaa monograph Uses, safety profile, and every drug interaction in one place Captopril and Hydrochlorothiazide drug information The full plain-English guide to this medication Captopril, Hydrochlorothiazide supplement interactions Every supplement checked against Captopril, Hydrochlorothiazide, 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 9 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Captopril, Hydrochlorothiazide and 1,4-dmaa?

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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.