Malabar Nut Drug Interactions, Uses, Effectiveness, Safety & More
What is this page for?
First and foremost: how Malabar Nut interacts with medications. The heart of this page is the interaction list — every drug Malabar Nut is known to interact with, and how serious each one is.
But these pages have grown well beyond that into a full monograph — what Malabar Nut is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy
Check Malabar Nut against your medication
Add one medicationDrugs that interact with Malabar Nut
0 medications have a known interaction with Malabar Nut, graded by severity. Select any drug for the full evidence-based detail.
We don’t currently list any known drug interactions for Malabar Nut. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.
What Severity, Likelihood & Evidence Mean
Severity — How Serious It Can Be
- Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
- Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
- Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
- No known interaction. Checked against our sources with nothing documented — not the same as proven safety.
Likelihood — How Well It’s Documented
- Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
- Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
- Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
- Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Where This Data Comes From
- Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
- Each drug listed above links to the full report for that exact Malabar Nut combination — clinical detail, likelihood, evidence level, and citations.
- Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Malabar Nut: Uses, Safety & Side Effects
Malabar nut (vasaka) is a traditional Ayurvedic herb used mostly for coughs and other breathing problems. Lab and animal studies suggest its compounds may help loosen mucus and relax airways, but high-quality human studies are limited. Talk to your pharmacist or doctor before using it, and avoid it during pregnancy.

- Scientific name
- Justicia adhatoda
- Family
- Acanthaceae
- Part used
- Leaves and roots (sometimes flowers and bark)
- Common forms
- Tea, syrup, juice, dried leaf powder, capsules, tincture
- Cough and congestion
- Asthma
- Bronchitis
- Common cold
- Sore throat
Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.
Generally used in traditional medicine, but human safety data are limited so use carefully.
Insufficient reliable information available; avoid using.
Read the full breastfeeding detailPregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Overview
Malabar nut comes from the plant Justicia adhatoda, also widely known as vasaka or adulsa. It is a shrub native to India and other parts of Asia, and it grows in many tropical and subtropical regions.
The leaves and roots have been used for hundreds of years in Ayurvedic and other traditional systems of medicine. People most often use it for breathing problems, such as cough, congestion, and asthma. It is taken as a tea, syrup, juice, powder, or capsule.
How it works
The plant contains compounds called alkaloids, with vasicine and vasicinone among the best studied. In laboratory and animal research, these compounds appear to help thin and loosen mucus and may help relax the muscles around the airways, which could make breathing easier.
Other compounds in the plant have shown anti-inflammatory and possible antimicrobial activity in test-tube studies. It is important to know that these mechanisms are mostly based on lab and animal work, so it is not certain how well they apply to people taking the herb.
Does Malabar Nut work?
How to read these evidence grades
Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.
For Malabar Nut, current evidence isn’t strong enough to rate any specific use. The conditions it has been studied for are listed below.
Also studied for 2 conditions — evidence insufficient to rate
Insufficient Reliable Evidence To Rate Dental plaque
Preliminary clinical research in adults with or without chronic gingivitis shows that using an Ayurvedic toothpaste (Sudantha, Link Natural Products) containing nine herbs, including Malabar nut leaf, twice daily for 12-24 weeks can reduce dental plaque compared with baseline or an unknown control toothpaste. Due to poor study methodology, and the use of nine different herbs in the toothpaste formulation, further study is needed to determine the effect of Malabar nut leaf dental health.
Insufficient Reliable Evidence To Rate Upper respiratory tract infection (URTI)
Preliminary clinical research in patients with acute URTIs shows that taking a specific combination product (Kan Jang, Swedish Herbal Institute) containing extracts from Echinacea purpurea root, Malabar nut leaf, and Siberian ginseng root 30 mL orally once daily for 3-4 days does not reduce the severity or frequency of cough compared to bromhexine hydrochloride or placebo. Other preliminary clinical research in patients with acute URTIs shows that taking this product 30 mL orally three times daily for 6 days does not improve the frequency or severity of symptoms compared to taking bromhexine hydrochloride or a combination of only Echinacea purpurea root and Siberian ginseng root.
Source & disclaimer. Effectiveness ratings and evidence summaries are provided by Natural Medicines (Therapeutic Research Center) and shown as licensed. Where Natural Medicines hasn’t rated a use, HelloPharmacist’s pharmacists may add their own reviewed rating and evidence (each such entry is labeled). This is educational information, not medical advice — talk with your pharmacist or doctor before starting, stopping, or changing a supplement.
Safety & precautions
When used in small amounts as found in traditional preparations, Malabar nut has a long history of use. Even so, human safety data are limited, so it is wise to be cautious—especially with concentrated extracts or high doses.
Pregnancy: Avoid Malabar nut during pregnancy. It has traditionally been associated with effects on the uterus, and safety has not been established.
Breastfeeding: There is not enough reliable information, so it is best to avoid it while breastfeeding.
People with liver problems, those scheduled for surgery, and anyone with a chronic health condition should check with a healthcare provider before using it. Always tell your pharmacist or doctor about any supplements you take.
Side effects
Malabar nut is usually well tolerated in the small amounts used traditionally. Possible side effects can include nausea, stomach upset, vomiting, or diarrhea, especially at higher doses.
Because reliable human safety studies are limited, the full range of side effects is not well known. Stop using it and seek medical care if you notice an allergic reaction, such as rash, swelling, or trouble breathing.
Dosing
There is no well-established standardized dose for Malabar nut. The right amount depends on the form (tea, syrup, juice, powder, or capsule) and how concentrated the product is.
The safest approach is to follow the directions on the product label and not exceed the recommended amount. Because products vary widely in strength and quality, ask your pharmacist or doctor for guidance before starting, especially if you have a health condition or take other medicines.
Malabar Nut & Pregnancy
Malabar Nut & Breastfeeding
© 2026 Therapeutic Research Center
Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center
References & further reading
The 5 references that drive our Malabar Nut 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.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Jayashankar, S., Panagoda, G. J., Amaratunga, E. A., Perera, K., and Rajapakse, P. S. A randomised double-blind placebo-controlled study on the effects of a herbal toothpaste on gingival bleeding, oral hygiene and microbial variables. Ceylon Med.J 2011;5 PubMed
- Narimanian, M., Badalyan, M., Panosyan, V., Gabrielyan, E., Panossian, A., Wikman, G., and Wagner, H. Randomized trial of a fixed combination (KanJang) of herbal extracts containing Adhatoda vasica, Echinacea purpurea and Eleutherococcus senticosus in pa
- Barth A, Hovhannisyan A, Jamalyan K, Narimanyan M. Antitussive effect of a fixed combination of Justicia adhatoda, Echinacea purpurea and Eleutherococcus senticosus extracts in patients with acute upper respiratory tract infection: A comparative, randomiz
- Howshigan J, Perera K, Samita S, Rajapakse PS. The effects of an Ayurvedic medicinal toothpaste on clinical, microbiological and oral hygiene parameters in patients with chronic gingivitis: a double-blind, randomised, placebo-controlled, parallel allocati
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.
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC
Brands that make products with Malabar Nut
28 brands in our database make a supplement containing Malabar Nut.
Supplement products with Malabar Nut
121 products in our database contain Malabar Nut. Open any to see its full ingredient list and every drug interaction we check.
Malabar Nut: Common Questions
What is Malabar Nut used for, and does it work?
Does Malabar Nut interact with prescription medications?
How are Malabar Nut interactions rated?
Is it safe to take Malabar Nut with my medications?
Where does this Malabar Nut interaction information come from?
What is Malabar Nut used for?
Does Malabar Nut actually work for cough and asthma?
Is Malabar Nut safe to take during pregnancy?
What forms does Malabar Nut come in?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Products that contain Malabar Nut
A rotating sample of real supplements in our database that list Malabar Nut — open any to see its full ingredients and every drug interaction we check.
- Malabar Nut Powder by TerraVita Premium Collection
- Authentic Chyawanprash by Lotus Blooming Herbs
- Organic Vasaka Powder by Banyan Botanicals
- Stimul8 2.0 Rainforest Punch by FINAFLEX
- StressCare by Himalaya
- Bronchial Support by Banyan Botanicals
- Hello Peace by Himalaya
- Bronchial Formula by Nature's Sunshine
- Chyavanprash by Banyan Botanicals
- StressCare by Himalaya
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