Cashew Leaf (Ewe Kaju)
Anacardium occidentale
About Cashew Leaf (Ewe Kaju)
Cashew Leaf (Ewe Kaju) (Anacardium occidentale) is a herb used in the Yoruba & West African Medicine tradition to help with Diabetes, UTI, Skin Health, and High Blood Pressure. The leaves are the part traditionally used, used both internally and topically.
Botanical background
The cashew tree (Anacardium occidentale) is a tropical evergreen tree that produces the cashew seed and the cashew apple. It can grow as high as 14 m (46 ft), but the dwarf cashew, growing up to 6 m (20 ft), has proved more profitable, with earlier maturity and higher yields.
Source: Wikipedia, via iNaturalist
Parts used
Conditions addressed
Tea / Infusion
- Steep 1–2 tsp of dried Cashew Leaf (Ewe Kaju) in freshly boiled water for 5–10 minutes.
- Cover while steeping.
- Strain and drink.
Tincture
- Pack dried Cashew Leaf (Ewe Kaju) into a jar and cover with 40–60% alcohol.
- Seal and steep for 4–6 weeks, shaking daily.
- Strain and store in a dark dropper bottle.
Powder / Capsule
- Grind dried Cashew Leaf (Ewe Kaju) into a fine powder.
- Fill size 00 capsules or stir into smoothies or honey.
Topical / Poultice
- Mash fresh Cashew Leaf (Ewe Kaju) or mix the powder with a little water to form a paste.
- Apply to the affected area for 20–30 minutes.
Infused Oil
- Fill a jar with dried Cashew Leaf (Ewe Kaju).
- Pour over a carrier oil until submerged.
- Leave for 4–6 weeks, then strain.
- Use topically or as a salve base.
Herbal Bath
- Brew 4–6 tbsp of Cashew Leaf (Ewe Kaju) in 1 litre of hot water for 15 minutes, strain, and add to a warm bath.
- Soak for 20–30 minutes.
Pregnancy, Breastfeeding & Children
No herb-specific pregnancy/child safety research is documented for Cashew Leaf (Ewe Kaju) in our references — the guidance below is based on its general effect category, not research on Cashew Leaf (Ewe Kaju) itself. Always confirm with a midwife, doctor, or pediatrician.
Pregnancy
Use CautionThis herb may affect blood pressure. Since blood pressure changes are a significant pregnancy risk factor (e.g. preeclampsia), herbs in this category are generally used only under medical supervision rather than self-directed — this is a general, mechanism-based caution, not herb-specific research.
Breastfeeding
Use CautionGenerally used cautiously during breastfeeding, particularly if the nursing parent is also on blood pressure medication.
Children
Use CautionBlood-pressure-active herbs are generally used cautiously in children and typically only under pediatric guidance.
Contraindications
- Pre-surgery — discontinue at least 2 weeks prior (potential antiplatelet effect)
- Significant kidney impairment — diuretic herbs may worsen renal function
- Diabetes medications — may enhance hypoglycaemic effect; monitor blood glucose closely
Warnings
⛔ Diabetes Medications
May enhance the blood sugar–lowering effect of insulin or oral diabetes medications. Monitor blood glucose closely.
⛔ Heart & Blood Pressure Medications
May interact with antihypertensive drugs, blood thinners, or cardiac medications. Do not combine without medical guidance.
⚠️ Kidney Disease
Some diuretic herbs are contraindicated in those with kidney disease. Consult your doctor if you have impaired kidney function.
⚠️ Allergic Reactions
Discontinue immediately if you experience rash, itching, swelling, or difficulty breathing.
⚠️ Not Medical Advice
This information is for educational purposes only. Always consult a qualified healthcare provider before using herbal remedies.
Drug & herb interactions
May affect blood sugar
Watch for: Insulin and oral diabetes medications (metformin, sulfonylureas)
Additive blood-sugar-lowering effects can risk hypoglycemia — monitor glucose closely.
May have a diuretic effect
Watch for: Diuretic medications and lithium
Additive fluid loss can affect electrolyte balance and change how the body clears lithium.
May affect blood pressure
Watch for: Antihypertensive medications (ACE inhibitors, beta-blockers, calcium channel blockers, diuretics)
Combined use can push blood pressure too high or too low — monitor readings if you take blood pressure medication.
Where to find in nature
Native region
Nigeria, Benin, West Africa
Climate
Tropical savannah
Habitat
West African tropical forests, savannahs, and traditional Yoruba healing gardens
🌿 To see Cashew Leaf (Ewe Kaju) growing, visit botanical gardens, university plant collections, or specialist herb nurseries near you. If foraging in the wild, always work with an expert identifier — never consume a plant you are not 100% certain of.
Where to buy
In store
- West African herbal shops and markets
- African grocery stores in major cities
- Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
- Naturopathic clinics and integrative medicine practices
- Specialist herbal apothecaries and herbalist practices
Online
iHerb
Wide selection of standardised extracts, capsules, and powders with lab testing
Mountain Rose Herbs
Premium bulk dried herbs — certified organic, ethically sourced
Starwest Botanicals
Large selection of certified organic bulk herbs and powders
Herb Pharm
High-quality liquid extracts and tinctures, rigorous quality standards
Amazon
Convenient — verify brand certifications and check third-party testing
Etsy
Small-batch artisan herbalists, hand-harvested and wildcrafted herbs
Quality tips
When buying Cashew Leaf (Ewe Kaju), look for: certified organic labelling, clearly stated country of origin, third-party lab testing for heavy metals and pesticides, and a batch expiry date. Standardised extracts offer consistent dosing; bulk dried herbs are more economical for regular use. Avoid very cheap, unlabelled products — quality varies enormously.