Karanj: Benefits, Uses & Dosage

If you have ever fought a patch of ringworm, a stubborn itch or a fungal infection between your toes, Karanj is the tree Ayurveda would point you to. Classical texts treat it as a skin remedy first and foremost, and its seed oil is the form most people meet.

Karanj (Karanja, also called Naktamala) is known in English as Indian Beech or Smooth Leaved Pongamia. Its botanical name is Pongamia glabra. The Bhavaprakash Nighantu (Varga 3) describes it as a large tree found across India and counts it among the important medicinal trees.

Every part of the tree is used: bark, leaves, flowers and seeds. The seeds yield Karanj oil, which the same text says is used extensively in skin diseases (Kushtha), worms (Krimi) and wounds (Vrana). The genuine cold-pressed oil is dark brown, sticky and strong-smelling, and that smell comes from its two characterised compounds, karanjin and pongamol.

Karanj tastes bitter and pungent (Tikta, Katu Rasa), is light and sharp (Laghu, Tikshna Guna), hot in potency (Ushna Virya) and pungent after digestion (Katu Vipaka). That hot, sharp, bitter profile explains almost everything it is used for.

Skin Health

This is Karanj's home ground. The Bhavaprakash Nighantu (Varga 3) lists it as Kushthaghna, "that which alleviates skin diseases", and says the oil is applied externally on scabies, ringworm and other parasitic skin conditions. See our guide to skin disorders for the wider Ayurvedic picture.

Ayurveda reads the bitter taste as the cleansing, anti-parasitic principle, while the sharp quality lets the oil penetrate deeper than a surface ointment.

Fungal Foot Infections

Athlete's foot is a ringworm-type infection on the feet, which puts it squarely in Karanj's classical territory. Its oily base nourishes cracked, dry skin instead of drying it further. Read more in Karanj for athlete's foot.

Worms and Parasites

The same text classes Karanj as Krimighna, anthelmintic. Internally it is used against intestinal worms, and externally against skin parasites. See parasites and worms.

Wound Healing

Karanj is listed as Vranahara, a wound healer, and its oil is described as effective against wounds.

Digestion and Chronic Fever

Internally, the Bhavaprakash Nighantu describes Karanj as a digestive stimulant, and a decoction of the bark is given in chronic fevers. Its hot potency fits the job of kindling a sluggish digestive fire.

Balancing Kapha and Vata

The text says Karanj alleviates both Kapha and Vata. Its heat counters the cold shared by both doshas, its lightness and sharpness cut through Kapha's heaviness, and its oil soothes Vata's dryness.

Karanj is used mostly on the skin, as oil. The classical internal doses are very small, which tells you how potent the plant is.

Choosing the oil

Look for cold-pressed, unrefined Karanj (Pongamia) seed oil. It should be dark brown, sticky and strongly scented. Light, odourless oils have usually been refined, and the active compounds go with the smell.

Mixing it

For sensitive skin, dilute the oil 1:1 with coconut oil to soften its heat. For stubborn fungal skin, blend it with Neem oil. The Sharangadhara Samhita records Neem and Karanj together in topical pastes (lepa) for skin disease.

Used on the skin as directed, Karanj oil is a long-standing classical remedy. Its heat and potency are also the reasons to treat it with respect.

• Mainly external. For home use, keep Karanj oil on the skin. Do not swallow it on your own. The classical internal doses are tiny and belong under a practitioner's supervision.
• It can sting. The hot potency can burn on broken or weeping skin. Patch-test on your inner forearm 24 hours before wider use, and dilute 1:1 with coconut oil if it burns beyond mild warmth.
• Pregnancy. Avoid internal Karanj entirely during pregnancy and use the topical oil sparingly.
• Heat-prone people. Karanj is hot and sharp. If your skin problem is red, hot and inflamed, dilute it or ask a practitioner whether a cooler herb suits you better.
• Stains. The oil marks fabric, so use old socks and towels.

Our sources do not list specific drug interactions. If you take regular medication, check with your doctor before any internal use.

Pregnancy & Nursing

Avoid internal Karanj entirely during pregnancy, and use the topical oil sparingly. Our sources give no specific guidance for nursing, so ask your practitioner or doctor before using it while breastfeeding.

Children

Our sources give no child dose. Do not give Karanj internally to children. If a practitioner approves external use, dilute the oil well with coconut oil and patch-test first, since young skin is more sensitive to its heat.

Elderly

Older skin tends toward dryness, the Vata pattern, and Karanj's oily base suits cracked, dry skin. Thin skin can sting more easily, so start diluted. Internal use should go through a practitioner.

Athletes

Athlete's foot is common in people who train in closed shoes. Karanj oil, 5 to 10 drops between the toes twice daily on dry feet, is the classical match. See Karanj for athlete's foot for the full protocol.