Drug & supplement interaction

Calotropis + 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 Calotropis 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

Calotropis 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 Calotropis 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.

Calotropis safety at a glance

Calotropis overall Avoid The plant contains toxic cardiac glycosides and an irritant latex that can cause serious harm if swallowed or rubbed in the eyes.
Pregnancy Likely Unsafe When used orally; avoid using. Read the full pregnancy detail
Breastfeeding Likely Unsafe When used orally; avoid using. 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 Losartan Potassium and Calotropis? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Losartan Potassium

Interactions in our licensed database are recorded against drug classes, not just single drug names. Losartan Potassium is filed under 7 classifications — including angiotensin receptor blockers (arbs), cytochrome p450 2c9 (cyp2c9) substrates, antihypertensive drugs. Calotropis has documented interactions with 4 drug classes — the most serious being digoxin (lanoxin) (moderate), diuretic drugs (moderate) and lithium (moderate) — and none of Losartan Potassium’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

Calotropis Does Interact With Other Medications

Calotropis has 98 moderate known drug interactions in our database — Losartan Potassium isn’t one of them. If you take anything else, check it against the full list below.

Moderate 98 No known interaction 2,732 (incl. Losartan Potassium)
Taking anything else?

Check Another of Your Medications Against Calotropis

Covers the 2,830 medications we’ve checked against Calotropis. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Calotropis 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.

  • Swelling Additional detail

    Calotropis

    “There is limited reliable information available about the safety of calotropis when taken as a medicine. Orally, high doses of calotropis have been reported to cause vomiting, diarrhea, bradycardia, convulsions, and death (18). Topical exposure to calotropis has been reported to cause contact allergies and corneal endothelial cell injury leading to edema and vision loss.”

    Calotropis · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).

    6 sources cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
    2. 95217. Handa F, Sadana JK, Sharma PK. Allergic contact dermatitis due to the plant Calotropis procera (Vern: AK). A case report. Indian J Dermatol. 1984 Jul;29(3):27-9.
    3. 95213. Al-Mezaine HS, Al-Rajhi AA, Al-Assiri A, Wagoner MD. Calotropis procera (ushaar) keratitis. Am J Ophthalmol. 2005 Jan;139(1):199-202. PubMed
    4. 95214. Al-Mezaine HS, Al-Amry MA, Al-Assiri A, et al. Corneal endothelial cytotoxicity of the Calotropis procera (ushaar) plant. Cornea. 2008 May;27(4):504-6. PubMed
    5. 95215. Basak SK, Bhaumik A, Mohanta A, Singhal P. Ocular toxicity by latex of Calotropis procera (Sodom apple). Indian J Ophthalmol. 2009 May-Jun;57(3):232-4. PubMed
    6. 95216. Biedner B, Rothkoff L, Witztum A. Calotropis procera (Sodom apple) latex keratoconjunctivitis. Isr J Med Sci. 1977 Sep;13(9):914-6.

    “Topically, calotropis has been reported to cause ocular injury. Intentional or accidental exposure of the eye to calotropis, often through self-treatment or workplace exposure, has been associated with painless vision reduction involving corneal edema and Descemet folds. Epithelial defects, iridocyclitis, and secondary glaucoma have also been reported in up to 31% of cases.”

    Calotropis · Natural Medicines adverse-effect record, reported in glaucoma.

    4 sources cited
    1. 95213. Al-Mezaine HS, Al-Rajhi AA, Al-Assiri A, Wagoner MD. Calotropis procera (ushaar) keratitis. Am J Ophthalmol. 2005 Jan;139(1):199-202. PubMed
    2. 95214. Al-Mezaine HS, Al-Amry MA, Al-Assiri A, et al. Corneal endothelial cytotoxicity of the Calotropis procera (ushaar) plant. Cornea. 2008 May;27(4):504-6. PubMed
    3. 95215. Basak SK, Bhaumik A, Mohanta A, Singhal P. Ocular toxicity by latex of Calotropis procera (Sodom apple). Indian J Ophthalmol. 2009 May-Jun;57(3):232-4. PubMed
    4. 95216. Biedner B, Rothkoff L, Witztum A. Calotropis procera (Sodom apple) latex keratoconjunctivitis. Isr J Med Sci. 1977 Sep;13(9):914-6.

    Losartan Potassium

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

  • Diarrhea / Vomiting reported in 5.8% of FDA reports for Losartan Potassium Additional detail

    Calotropis

    “Orally, high doses of calotropis can cause vomiting and diarrhea (18).”

    Calotropis · Natural Medicines adverse-effect record, reported in diarrhea.

    1 source cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

    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 ›

  • A skin rash Additional detail

    Calotropis

    “Topically, calotropis has been reported to cause allergic contact dermatitis. In one case report, a 24-year-old male developed allergic dermatitis of the penis and scrotum after touching a calotropis plant with his hands and then spreading exposure to the penis and scrotum. The patient experienced redness, burning, lesions, and a watery discharge.”

    Calotropis · Natural Medicines adverse-effect record, reported in dermatitis.

    1 source cited
    1. 95217. Handa F, Sadana JK, Sharma PK. Allergic contact dermatitis due to the plant Calotropis procera (Vern: AK). A case report. Indian J Dermatol. 1984 Jul;29(3):27-9.

    “Topically, calotropis has been reported to cause allergic contact dermatitis.”

    Calotropis · Natural Medicines adverse-effect record, reported in dermatitis.

    1 source cited
    1. 95217. Handa F, Sadana JK, Sharma PK. Allergic contact dermatitis due to the plant Calotropis procera (Vern: AK). A case report. Indian J Dermatol. 1984 Jul;29(3):27-9.

    Losartan Potassium

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

Reported for Calotropis but not commonly for Losartan Potassium: seizures, a slow heartbeat and loss of vision.

Effects for Losartan Potassium come from the ADVERSE REACTIONS section of its FDA label; effects for Calotropis 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.

Special populations

Calotropis in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Unsafe

When used orally; avoid using.

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 Calotropis 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 Calotropis 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 Calotropis 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 Calotropis 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 Calotropis
Steady interest

#1,112 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 Calotropis reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Calotropis 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 Calotropis

What is Calotropis?

  • Skin conditions and wounds (traditional, topical)
  • Joint pain and inflammation
  • Digestive complaints
  • Coughs and respiratory issues
  • Traditional Ayurvedic and folk remedies

Calotropis is a milkweed-family plant long used in traditional medicine, but its milky latex and other parts are potentially toxic and can harm the eyes, skin, and heart. Human evidence for any health benefit is very limited, and the risk of poisoning is real, so it should not be taken internally without expert medical supervision.

Calotropis procera · Apocynaceae · Latex (milky sap), leaves, roots, and flowers · Traditional preparations such as dried plant powder, root or leaf extracts, and topical applications of latex; rarely standardized commercial products

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

Calotropis: dosing

There is no established safe or standardized dose of Calotropis. In general, internal use is best avoided.

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

Read the full Calotropis 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 & Calotropis

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

0Major
98Moderate
0Minor
2,731No known interaction
98 Moderate 2,731 No interaction
Moderate

98 interactions

Showing 60 of 98 moderate interactions — see all 98 on the Calotropis page.

No interaction 2,731 drugs checked — show the list

We also checked Calotropis against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,731 medications checked with no known interaction — see the full Calotropis list.

See the full Calotropis interactions page
See every supplement checked against Losartan Potassium, ranked by severity
Evidence & sources

Calotropis References

The 7 references that drive our Calotropis 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. Robbers JE, Speedie MK, Tyler VE. Pharmacognosy and Pharmacobiotechnology. Baltimore, MD: Williams & Wilkins, 1996.
  2. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  3. Al-Mezaine HS, Al-Rajhi AA, Al-Assiri A, Wagoner MD. Calotropis procera (ushaar) keratitis. Am J Ophthalmol. 2005 Jan;139(1):199-202. PubMed
  4. Al-Mezaine HS, Al-Amry MA, Al-Assiri A, et al. Corneal endothelial cytotoxicity of the Calotropis procera (ushaar) plant. Cornea. 2008 May;27(4):504-6. PubMed
  5. Basak SK, Bhaumik A, Mohanta A, Singhal P. Ocular toxicity by latex of Calotropis procera (Sodom apple). Indian J Ophthalmol. 2009 May-Jun;57(3):232-4. PubMed
  6. Biedner B, Rothkoff L, Witztum A. Calotropis procera (Sodom apple) latex keratoconjunctivitis. Isr J Med Sci. 1977 Sep;13(9):914-6.
  7. Handa F, Sadana JK, Sharma PK. Allergic contact dermatitis due to the plant Calotropis procera (Vern: AK). A case report. Indian J Dermatol. 1984 Jul;29(3):27-9.

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 Calotropis and Losartan Potassium Together: Common Questions

Is it safe to take Calotropis with Losartan Potassium?
We do not list a known interaction between Calotropis 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 Calotropis and Losartan Potassium have any of the same side effects?
Yes — our sources link each of them separately to 4 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 Calotropis and Losartan Potassium combination checked?
Interactions in our licensed database are recorded against drug classes. Losartan Potassium is filed under 7 classifications, and Calotropis has documented interactions with 4 drug classes — none of Losartan Potassium'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 Calotropis interact with any other medications?
Yes. Calotropis has 98 documented drug interactions in our database — Losartan Potassium 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 Losartan Potassium interact with any supplements?
Yes. Losartan Potassium has documented interactions with 253 supplements in our database — Calotropis 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

Calotropis 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 7 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Losartan Potassium and Calotropis?

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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.