Drug & supplement interaction

Beta-hydroxybutyrate (bhb) + Losartan Potassium

Losartan Potassium brand name: Cozaar.

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 Beta-hydroxybutyrate (bhb) and Losartan Potassium 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

Beta-hydroxybutyrate (bhb) and Losartan Potassium

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 Losartan Potassium and Beta-hydroxybutyrate (bhb) 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 Beta-hydroxybutyrate (bhb) at all — not against Losartan Potassium, 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.

Beta-hydroxybutyrate (bhb) safety at a glance

Beta-hydroxybutyra... overall Use caution Generally tolerated short-term but may cause stomach upset and adds significant minerals or sodium; long-term safety is not well studied.
Pregnancy Avoid Not enough safety data; avoid during pregnancy unless your doctor advises otherwise.
Breastfeeding Avoid Not enough safety data; best to avoid while breastfeeding.

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

Still wondering about combining Losartan Potassium and Beta-hydroxybutyrate (bhb)? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Beta-hydroxybutyrate (bhb) and Losartan Potassium 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 taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Constipation / Stomach pain Additional detail

    Beta-hydroxybutyrate (bhb)

    “Orally, BHB may cause indigestion, diarrhea, nausea, gastrointestinal upset, and vomiting in some patients. In a small crossover study, nausea, diarrhea, and vomiting were reported in 37%, 16%, and 11% of patients, respectively, taking two 0.38 gram/kg doses of BHB salts separated by 45 minutes on a single day.”

    Beta-hydroxybutyrate (bhb) · Natural Medicines adverse-effect record, reported in constipation.

    4 sources cited
    1. 96084. Gautschi M, Weisstanner C, Slotboom J, Nava E, Zürcher T, Nuoffer JM. Highly efficient ketone body treatment in multiple acyl-CoA dehydrogenase deficiency-related leukodystrophy. Pediatr Res. 2015;77(1-1):91-8. PubMed
    2. 96096. Gross EC, Sandor P, Fischer D. Preliminary data on exogenous ketone bodies in migraine prevention. Cephalalgia 2017; 37(1S) 52-171.
    3. 102024. Evans M, Patchett E, Nally R, Kearns R, Larney M, Egan B. Effect of acute ingestion of β-hydroxybutyrate salts on the response to graded exercise in trained cyclists. Eur J Sport Sci. 2018;18(3):376-86.
    4. 96088. Clarke K, Tchabanenko K, Pawlosky R, et al. Kinetics, safety and tolerability of (R)-3-hydroxybutyl (R)-3-hydroxybutyrate in healthy adult subjects. Regul Toxicol Pharmacol. 2012;63(3):401-8. PubMed

    Losartan Potassium

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

  • Diarrhea / Nausea / Vomiting reported in 5.9% of FDA reports for Losartan Potassium Additional detail

    Beta-hydroxybutyrate (bhb)

    “Orally, BHB seems to be well-tolerated. However, a thorough evaluation of safety outcomes has not been conducted.

    Most Common Adverse Effects:

    Orally: Diarrhea, gastrointestinal upset, indigestion, mild dehydration, nausea, and vomiting.”

    Beta-hydroxybutyrate (bhb) · Natural Medicines adverse-effect record, reported in diarrhea.

    Losartan Potassium

    Listed in the ADVERSE REACTIONS section of the FDA label for Losartan Potassium, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

Reported for Beta-hydroxybutyrate (bhb) but not commonly for Losartan Potassium: stomach upset, dehydration and bloating or gas.

Effects for Losartan Potassium come from the ADVERSE REACTIONS section of its FDA label; effects for Beta-hydroxybutyrate (bhb) come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 89,498 voluntary FDA FAERS reports for Losartan Potassium that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. 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 Beta-hydroxybutyrate (bhb) or Losartan Potassium

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Beta-hydroxybutyrate (bhb) or Losartan Potassium, 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 Losartan Potassium

This page covers Beta-hydroxybutyrate (bhb) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Losartan Potassium page lists 253 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), Grapefruit (major) and St. John's Wort (major).

By severity: 6 major · 205 moderate · 42 minor.

From our pharmacist’s overview on the Losartan Potassium page

“Losartan potassium (Cozaar) treats high blood pressure, and this is a list to respect, because six of its 253 supplement interactions carry a major rating. Most entries do one of two things.”

Reviewed by 2 · Jul 18, 2026

Open the Losartan Potassium interaction page

How much people look this up

Where Beta-hydroxybutyrate (bhb) and Losartan Potassium 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 Beta-hydroxybutyrate (bhb)
Steady interest

#1,385 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Losartan Potassium
Top 10

#6 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 Beta-hydroxybutyrate (bhb) reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Beta-hydroxybutyrate (bhb) and Losartan Potassium 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 Beta-hydroxybutyrate (bhb)

What is Beta-hydroxybutyrate (bhb)?

Beta-hydroxybutyrate (bhb)
  • Weight loss and fat burning
  • Boosting energy on a ketogenic diet
  • Athletic and exercise performance
  • Mental focus and clarity
  • Reducing 'keto flu' symptoms

Beta-hydroxybutyrate (BHB) is a ketone body your liver naturally makes when carbs are low, and it is sold as a supplement marketed for weight loss, energy, and athletic performance. Despite bold marketing claims, human evidence that BHB supplements help with weight loss or performance is limited and mixed. If you want to try it, talk with your pharmacist or doctor first, especially if you have kidney, heart, or blood pressure concerns.

Not applicable (a ketone body made by the body or produced as a synthetic salt) · Capsules, powders, drink mixes (often as BHB salts bound to sodium, calcium, magnesium, or potassium; also BHB esters)

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

Beta-hydroxybutyrate (bhb): dosing

There is no official, standardized dose of BHB. Products vary widely in how much BHB they contain and which minerals they are paired with.The best approach is to follow the directions on the product label and not exceed them. Many people start with a smaller amount to see how their stomach reacts before using more.Because mineral content matters, check how much sodium, calcium, magnesium, or potassium each serving provides.

From our Beta-hydroxybutyrate (bhb) monograph — the full record covers uses, side effects and every documented interaction.

Read the full Beta-hydroxybutyrate (bhb) monograph & all interactions
Medication

About Losartan

What Is Losartan Used For?

Brand name: Cozaar

Losartan tablets — available as branded Cozaar and several generic products — are used to treat high blood pressure (hypertension) in adults and children 6 years and older. Lowering blood pressure reduces the risk of strokes and heart attacks. Losartan tablets are also used to reduce the risk of stroke in people with high blood pressure who also have left ventricular hypertrophy (an enlarged left side of the heart). Note: evidence suggests this stroke-risk benefit may not apply to Black patients.

Losartan tablets are additionally approved to protect the kidneys in people with type 2 diabetes, high blood pressure, and signs of kidney damage (diabetic nephropathy). Arbli, the oral suspension form, shares these same approved uses.

Most-Reported Side Effects for Losartan Potassium

From FAERS, the FDA’s public side-effect reporting system (89,498 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 6,464 reports
Nausea 5,301 reports
Diarrhea 5,184 reports
Dyspnea 4,689 reports
Dizziness 4,429 reports
See full Losartan drug information
Keep checking

Other Drugs & Beta-hydroxybutyrate (bhb)

Browse every other medication we’ve checked against Beta-hydroxybutyrate (bhb) — 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 Beta-hydroxybutyrate (bhb) 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 Beta-hydroxybutyrate (bhb) list.

See the full Beta-hydroxybutyrate (bhb) interactions page
See every supplement checked against Losartan Potassium, ranked by severity
Evidence & sources

Beta-hydroxybutyrate (bhb) References

The 6 references that drive our Beta-hydroxybutyrate (bhb) 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. Gautschi M, Weisstanner C, Slotboom J, Nava E, Zürcher T, Nuoffer JM. Highly efficient ketone body treatment in multiple acyl-CoA dehydrogenase deficiency-related leukodystrophy. Pediatr Res. 2015;77(1-1):91-8. PubMed
  2. Van Rijt WJ, Heiner-Fokkema MR, du Marchie Sarvaas GJ, et al. Favorable outcome after physiologic dose of sodium-D,L-3-hydroxybutyrate in severe MADD. Pediatrics. 2014;134(4):e1224-8.
  3. Clarke K, Tchabanenko K, Pawlosky R, et al. Kinetics, safety and tolerability of (R)-3-hydroxybutyl (R)-3-hydroxybutyrate in healthy adult subjects. Regul Toxicol Pharmacol. 2012;63(3):401-8. PubMed
  4. Gross EC, Sandor P, Fischer D. Preliminary data on exogenous ketone bodies in migraine prevention. Cephalalgia 2017; 37(1S) 52-171.
  5. Evans M, Patchett E, Nally R, Kearns R, Larney M, Egan B. Effect of acute ingestion of β-hydroxybutyrate salts on the response to graded exercise in trained cyclists. Eur J Sport Sci. 2018;18(3):376-86.
  6. Malhi MS, Duerson F, Salabei JK, Okonoboh P. Starvation Ketoacidosis Induced by Ketogenic Diet and Consumption of Ketone Supplement. Cureus. 2021;13(6):e15778. Published 2021 Jun 20. 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

Taking Beta-hydroxybutyrate (bhb) and Losartan Potassium Together: Common Questions

Is it safe to take Beta-hydroxybutyrate (bhb) with Losartan Potassium?
We do not list a known interaction between Beta-hydroxybutyrate (bhb) and Losartan Potassium. 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 Beta-hydroxybutyrate (bhb) and Losartan Potassium have any of the same side effects?
Yes — our sources link each of them separately to 5 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 Losartan Potassium interact with any supplements?
Yes. Losartan Potassium has documented interactions with 253 supplements in our database — Beta-hydroxybutyrate (bhb) is not one of them. The Losartan Potassium 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

Beta-hydroxybutyrate (bhb) monograph Uses, safety profile, and every drug interaction in one place Losartan drug information The full plain-English guide to this medication Losartan Potassium supplement interactions Every supplement checked against Losartan Potassium, 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 6 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Losartan Potassium and Beta-hydroxybutyrate (bhb)?

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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.