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Nimba निम्ब
Azadirachta indica · Meliaceae
Also known as: Neem, Neem Mingi, Neem Patra, Neem Chhal, Neem Ki Chhal
Part used: Leaf, bark, seed
Nimba (Azadirachta indica) is neem, one of the most widely used medicinal trees in India and among the bitterest substances in the materia medica. Every part is used. Ayurveda treats it as the foremost drug for skin disease, infection and parasites, and it is antibacterial, antifungal and insecticidal.
| Rasa (taste) | Tikta (Bitter), Kashaya (Astringent) |
|---|---|
| Guna (qualities) | Laghu (Light), Ruksha (Dry) |
| Virya (potency) | Ushna (Hot) |
| Vipaka | Katu (Pungent) |
| Dosha | Balances Kapha & Vata |
| Prabhava | Classical systemic action |
Key takeaways
- Botanical name: Azadirachta indica
- Part used: Leaf, bark, seed
- Dosha action: Balances Kapha & Vata
- Typical dose: Leaf powder 1–3 g; leaf juice, decoction and neem oil (external) are also used.
Nimba in other languages
Introduction
Nimba (Neem, Azadirachta indica) is Ayurveda's supreme blood-purifying and skin herb — every part of the tree, from leaf to bark to seed, is medicinal. Bitter and cooling, it is the classical choice for skin disorders, infections and detoxification.
Classification
Of the Meliaceae family, Nimba is grouped among the Tikta (bitter), Kushtaghna (anti-skin-disease) and Krimighna (antiparasitic) dravyas. Its bitter-astringent taste and cooling potency clear heat, toxins and Kapha from the blood and skin.
Uses & benefits
Neem is the classical bitter for the skin and the blood. It is used in acne, eczema, boils and chronic skin disease, in worm infestation and in Prameha, and externally as an oil or wash for infection and itching. Its bitterness is cooling and drying rather than warming.
Nimba for skin disease
The foremost Kushtaghna drug, used internally and externally across eczema, acne, fungal infection and chronic itching.
Nimba for wound infection
The leaf decoction is used as a wound wash — antibacterial and long established in Indian practice.
Nimba for fungal infection
Ringworm, athlete's foot and fungal scalp conditions, applied as oil or a leaf paste.
Nimba for oral health
The twig is the original datun, used as a chewing stick across India, and neem is a standard component of Ayurvedic tooth powders.
Nimba for worms
A principal Krimighna drug, used for intestinal parasites.
Nimba for diabetes
The leaf is named among the Pramehahara drugs and is widely used in Madhumeha alongside prescribed treatment.
Nimba for fever
Bitter and cooling, used in Jwara, particularly recurrent fevers.
Nimba for head lice and scabies
The oil is a traditional and effective application for skin parasites.
Nimba as an agricultural insecticide
Neem oil and cake are used as natural pesticides — a separate use, but the same compounds.
Nimba in classical formulations
Present in Nimba Taila, Panchanimba Churna and most of the classical skin and fever compounds.
Dosage — how much to take
Leaf powder 1–3 g; leaf juice, decoction and neem oil (external) are also used. Best used in courses rather than continuously. Follow your Vaidya's advice.
Dosage varies with age, constitution and condition — confirm with a qualified Vaidya.
Traditional uses — questions answered from the classical texts
Answers are drawn from the citations and properties recorded for this drug. No chapter-and-verse reference appears that the record does not carry.
Which classical texts describe Nimba?
The citations held for Nimba in this catalogue are: Sushruta Samhita (Kushtha Chikitsa); Bhavaprakasha Nighantu (Guduchyadi Varga).
What does the Sushruta Samhita record about Nimba?
Cited for skin diseases and blood purification. Reference: Sushruta Samhita — Kushtha Chikitsa.
What does the Bhavaprakasha Nighantu record about Nimba?
Described as Kushtaghna and Krimighna. Reference: Bhavaprakasha Nighantu — Guduchyadi Varga.
What is Nimba traditionally used for in Ayurveda?
Neem is the classical bitter for the skin and the blood. It is used in acne, eczema, boils and chronic skin disease, in worm infestation and in Prameha, and externally as an oil or wash for infection and itching. Its bitterness is cooling and drying rather than warming.
What are the Ayurvedic properties of Nimba?
Rasa Tikta (Bitter), Kashaya (Astringent), Guna Laghu (Light), Ruksha (Dry), Virya Ushna (Hot), Vipaka Katu (Pungent). Dosha action: Balances Kapha & Vata. Prabhava: Classical systemic action.
Why is Nimba classified the way it is?
In dravya-guna a drug's dosha action follows from its taste, qualities, potency and post-digestive effect. Nimba carries Ushna (Hot) virya and Katu (Pungent) vipaka, which together give the recorded action: Balances Kapha & Vata.
Which part of Nimba is used medicinally?
The part used is Leaf, bark, seed.
How much Nimba is taken, and how?
Leaf powder 1–3 g; leaf juice, decoction and neem oil (external) are also used. Best used in courses rather than continuously. Follow your Vaidya's advice. Dosage varies with age, constitution and condition — confirm it with a qualified Vaidya.
When should Nimba be avoided?
Very bitter; large internal doses can disturb digestion or be unsuitable in pregnancy and for the very depleted. Use under guidance.
Where does Nimba grow?
Neem is a fast-growing evergreen tree native to the Indian subcontinent, found throughout India's plains and dry regions and now across the tropics.
Classical references
- Bhavaprakash Nighantu — Guduchyadi Varga
Described as Kushtaghna and Krimighna. - Charaka & Sushruta Samhita — Kushtha Chikitsa
Cited for skin diseases and blood purification.
Modern research
-
Azadirachta indica A. Juss (neem) against diabetes mellitus: a critical review on its phytochemistry, pharmacology, and toxicology
(see source). Journal of Pharmacy and Pharmacology (2022)
A critical review of pharmacological investigations on neem's effects on blood glucose, lipid profile and diabetic complications.
View study -
Effectiveness of Azadirachta indica (neem) mouthrinse in plaque and gingivitis control: a systematic review
Dhingra K, Vandana KL. International Journal of Dental Hygiene (2017)
A systematic review of randomized controlled trials finding neem mouthrinse effective in reducing dental plaque and gingivitis, comparable to chlorhexidine.
View study doi:10.1111/idh.12191
Safety & precautions
Very bitter; large internal doses can disturb digestion or be unsuitable in pregnancy and for the very depleted. Use under guidance.
Where it grows
Neem is a fast-growing evergreen tree native to the Indian subcontinent, found throughout India's plains and dry regions and now across the tropics.
Frequently asked questions
What is neem used for?
Skin disease of nearly every kind, wound and fungal infection, oral health, intestinal worms, fever and blood sugar support. It is antibacterial, antifungal and insecticidal, and is used both internally and externally.
What is the dose of neem?
Leaf powder 1–3 g per day, or leaf juice 10–20 ml. It is intensely bitter, so it is usually taken with honey or within a compound. The oil is used externally, diluted.
Is neem safe to take internally?
In classical doses for defined courses, yes. Avoid in pregnancy — neem has documented anti-fertility and abortifacient effects. Never give neem oil to infants; ingestion has caused encephalopathy and deaths in young children.
Can neem oil be applied to the skin?
Yes, diluted in a carrier oil, for fungal infection, scabies, lice and chronic skin conditions. It is potent and smells strongly. Patch test first — contact irritation is not uncommon.
Does neem help with diabetes?
Neem leaf is named among the classical Pramehahara drugs and is widely used for blood sugar support in India. Treat it as supportive: keep monitoring, tell your physician, and do not reduce prescribed medication.
Is neem good for acne?
It is one of the standard choices, used internally for its blood-purifying and antimicrobial action and applied externally as oil or leaf paste. It suits infected and inflammatory acne particularly, often combined with turmeric.
Who should avoid neem?
Anyone pregnant or trying to conceive — it has documented anti-fertility effects. Infants and young children should never be given neem oil internally. Take advice if you have liver or kidney disease, or take diabetes medication.
