Herb & supplement monograph

Cashew Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Cashew interacts with medications. The heart of this page is the interaction list — every drug Cashew is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Cashew 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

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Cashew Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant Cashew drug interaction appears low for most people. None of the listed interactions are rated major, and every one traces back to a single, poorly documented concern about blood sugar.

Interactions deserving the most attention

The only medicines that stand out are diabetes medications, including insulin and oral blood-sugar drugs. Some research hints that eating large amounts of cashew might raise fasting blood sugar, which could theoretically work against these medicines. Other research found that a modest daily serving of cashews did not meaningfully change blood sugar, so the evidence points in both directions. Because blood sugar is a closely watched number, people using these medicines may want to keep an eye on their readings if cashews become a big part of their diet.

What the rest of the list means

The long list of interacting medications looks more worrying than it is. Every entry reflects the same theoretical blood-sugar question applied across the many different diabetes drugs, not dozens of separate proven problems. This effect has only limited and conflicting support in people, and it has not been clearly shown to change how these medicines work.

Check your medications against Cashew

Based on HelloPharmacist’s Cashew interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Cashew

86 medications have a known interaction with Cashew, graded by severity. Select any drug for the full evidence-based detail.

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Cashew using our pharmacist-reviewed interaction data.

AI summaries are generated from our Cashew interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

Read The List Like a Pharmacist

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 Cashew combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

The big picture

The kinds of drugs Cashew affects

Every type of medication (drug category) Cashew is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 1 drug category Cashew interacts with

Antidiabetes Drugs

Eating a diet that consists of high amounts of cashew might increase fasting blood glucose levels. However, other evidence shows that eating 30 grams of cashew daily does not significantly affect glycemic measures. Until more is known, use with caution in combination with antidiabetes drugs. Theoretically, concomitant use might reduce the effects of antidiabetes drugs. Dosing adjustments for insulin or oral hypoglycemic agents may be necessary.
Oral hypoglycemic drugs include glimepiride (Amaryl), glipizide (Glucotrol), glyburide (Diabeta, Micronase), tolazamide (Tolinase), tolbutamide (Orinase), and others.

Likelihood Possible Evidence D

Monograph

Cashew: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

Cashews are a nutritious tree nut that provides protein, healthy fats, fiber, and minerals like magnesium and copper. Eaten as part of a balanced diet, they may support heart health, but evidence for cashew supplements treating any specific disease is limited. People with tree nut allergies must avoid them entirely.

Scientific name: Anacardium occidentale
Family: Anacardiaceae
Part used: Nut (seed), nut shell oil, leaves, and bark
Common forms: Whole nuts, cashew butter, cashew milk, oil, and capsules or extracts

People commonly use it for

Heart health support
Source of protein and minerals
Blood sugar support
Traditional digestive remedy
Skin and oral care (traditional)

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance

OverallLikely safe

Cashews are safe as a food for most people, but those with tree nut allergies must avoid them.

PregnancyInsufficient reliable information

There is insufficient reliable information available about the safety of medicinal amounts of cashew during pregnancy and lactation; avoid using.

Read the full pregnancy detail

BreastfeedingInsufficient reliable information

There is insufficient reliable information available about the safety of medicinal amounts of cashew during pregnancy and lactation; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Cashew comes from the tree Anacardium occidentale, which is native to Central and South America and now grown in warm regions around the world, including India, Vietnam, and parts of Africa. The tree produces a fleshy "cashew apple" with a curved nut attached to the bottom.

The cashew nut is the part most people know. It is eaten roasted, made into butter, blended into dairy-free milk, or used in cooking. The shell of the cashew contains an oil that must be removed during processing because it can irritate the skin. Other parts of the plant, such as the leaves and bark, are used in some traditional medicine systems.

How it works

Cashews contain unsaturated fats, fiber, plant compounds called polyphenols, and minerals such as magnesium and copper. These nutrients may play a role in supporting healthy cholesterol, blood pressure, and blood sugar as part of a balanced diet.

The polyphenols and other compounds in cashews act as antioxidants in laboratory studies, meaning they may help protect cells from certain types of damage. The cashew shell also contains compounds called anacardic acids, which have shown antimicrobial activity in lab tests.

It is important to know that much of this research comes from test-tube and animal studies. These findings do not always carry over to real health benefits in people.

Effectiveness

Does Cashew work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 5 uses evaluated

5 Insufficient evidence

How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.

2Likely EffectiveGood evidence, though not yet conclusive.

3Possibly EffectiveSome evidence suggests a benefit.

4Possibly IneffectiveSome evidence it may not help.

5Likely IneffectiveFairly strong evidence it doesn’t help.

6IneffectiveStrong evidence it doesn’t work.

7Insufficient Reliable Evidence to RateToo little research to say either way.

For Cashew, current evidence isn’t strong enough to rate any specific use. The conditions it has been studied for are listed below.

Also studied for 5 conditions — evidence insufficient to rate

Insufficient Reliable Evidence To Rate Cardiovascular disease (CVD)