⛩️Kampo / Japanese Medicine

Loquat Leaf (Biwa)

Eriobotrya japonica

About Loquat Leaf (Biwa)

Loquat Leaf (Biwa) (Eriobotrya japonica) is a herb used in the Kampo / Japanese Medicine tradition to help with Cough, Nausea, Respiratory Issues, and Fever. The leaves are the part traditionally used, taken internally.

Botanical background

The loquat (Eriobotrya japonica) (from Cantonese Chinese: 盧橘; Jyutping: lou4gwat1, nowadays called Chinese: 枇杷; pinyin: pípá; Jyutping: pei paa) is a species of flowering plant in the family Rosaceae, a native to the cooler hill regions of China to south-central China. It is also quite common in Japan, Korea, hilly Regions of India (Himachal), Northern Areas of Pakistan and some can be found in some Northern part of the Philippines, and hill country in Sri Lanka.

Source: Wikipedia, via iNaturalist

Parts used

Leaves · internal
🍵

Tea / Infusion

1–3 cups daily
  • Steep 1–2 tsp of dried Loquat Leaf (Biwa) 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 Loquat Leaf (Biwa) 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 Loquat Leaf (Biwa) into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.
♨️

Steam Inhalation

1–2× daily during acute symptoms
  • Add 2–3 tbsp of Loquat Leaf (Biwa) to a bowl of just-boiled water.
  • Drape a towel over your head and inhale steam for 5–10 minutes.

Pregnancy, Breastfeeding & Children

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

Pregnancy

Insufficient Data

No specific pregnancy safety research is documented for this herb in our references. This doesn't mean it's unsafe — it means it hasn't been well studied. Treat as unstudied and avoid unless a midwife or doctor familiar with your pregnancy advises otherwise.

Breastfeeding

Insufficient Data

No specific breastfeeding safety research is documented for this herb in our references. Treat as unstudied and consult a lactation consultant, midwife, or doctor before use.

Children

Insufficient Data

No specific pediatric safety/dosage research is documented for this herb in our references. Treat as unstudied and consult a pediatrician or pediatric herbalist before giving to a child.

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

    No specific drug or herb interactions are documented for Loquat Leaf (Biwa) in our references. This doesn’t mean none exist — always check with a pharmacist or doctor before combining any new herb with prescription medication.

    Where to find in nature

    Native region

    Japan, China, Korea

    Climate

    Temperate to subtropical

    Habitat

    Mountain forests and cultivated herb farms across Japan and East Asia

    🌿 To see Loquat Leaf (Biwa) 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

    • Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
    • Naturopathic clinics and integrative medicine practices
    • Specialist herbal apothecaries and herbalist practices
    • Farmers markets with herb vendors

    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 Loquat Leaf (Biwa), 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.