🪴Jamu

Velvet Bean (Koro Benguk)

Mucuna pruriens

About Velvet Bean (Koro Benguk)

Velvet Bean (Koro Benguk) (Mucuna pruriens) is a herb used in the Jamu tradition to help with Parkinson's, Libido, Nerve Support, and Fatigue, among 2 other conditions it addresses. The aerial parts and leaves are the parts traditionally used, taken internally.

Botanical background

Mucuna pruriens is a tropical legume native to Africa and tropical Asia and widely naturalized and cultivated. Its English common names include velvet bean, Bengal velvet bean, Florida velvet bean, Mauritius velvet bean, Yokohama velvet bean, cowage, cowitch, lacuna bean, and Lyon bean. The plant is notorious for the extreme itchiness it produces on contact, particularly with the young foliage and the seed pods. It has agricultural and horticultural value and is used in herbalism.

Source: Wikipedia, via iNaturalist

Parts used

Aerial Parts · internalLeaves · internal
🍵

Tea / Infusion

1–3 cups daily
  • Steep 1–2 tsp of dried Velvet Bean (Koro Benguk) in freshly boiled water for 5–10 minutes.
  • Cover while steeping.
  • Strain and drink.
💧

Tincture

20–40 drops in water, 2–3× daily
  • Pack dried Velvet Bean (Koro Benguk) 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

500 mg – 1 g, 1–3× daily
  • Grind dried Velvet Bean (Koro Benguk) into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.

Pregnancy, Breastfeeding & Children

No herb-specific pregnancy/child safety research is documented for Velvet Bean (Koro Benguk) in our references — the guidance below is based on its general effect category, not research on Velvet Bean (Koro Benguk) itself. Always confirm with a midwife, doctor, or pediatrician.

Pregnancy

Avoid

This herb is associated with hormone-modulating activity. Because pregnancy is a uniquely hormone-sensitive state, herbs in this category are generally avoided unless specifically guided by a midwife or doctor — this is a general, mechanism-based caution, not herb-specific research.

Breastfeeding

Use Caution

Hormone-modulating herbs can potentially affect milk supply or pass hormone-active compounds to the infant — generally used cautiously and under guidance.

Children

Avoid

Hormone-modulating herbs are generally avoided in children given the sensitivity of ongoing hormonal development.

Contraindications

    Warnings

    ⚠️ 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 have a stimulant effect

    Watch for: Other caffeine-containing products, MAOIs, and stimulant medications (for ADHD or weight loss)

    Additive stimulant effects can raise heart rate and blood pressure.

    May affect hormone levels

    Watch for: Hormone therapies, oral contraceptives, and tamoxifen or similar medications

    Some herbs have mild phytoestrogenic or hormone-modulating activity that can interact with hormonal medications.

    Where to find in nature

    Native region

    Indonesia, Malaysia, Philippines

    Climate

    Tropical equatorial

    Habitat

    Tropical rainforests, village herb gardens, and traditional farm plots across the Indonesian archipelago

    🌿 To see Velvet Bean (Koro Benguk) 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

    • Indonesian and Malaysian grocery stores
    • Asian health food stores with Southeast Asian sections
    • 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 Velvet Bean (Koro Benguk), 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.