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School of Pharmaceutical Sciences, Universiti Sains Malaysia

Pokok Limau Purut


  • Scientific name:

    Citrus hystrix

  • Other names:

    Kaffir lime tree


Citrus hystrix, also known as kaffir lime tree, is a tropical plant widely used in Southeast Asian cooking, especially the leaves and fruit. But beyond its culinary value, it has a long history in traditional medicine across Malaysia, Thailand, and Indonesia.

Medicinal Uses of Pokok Limau Purut

  1. Digestive Aid
  • Leaves and juice are used to relieve indigestion, bloating, and gas.
  • A common remedy is boiling the leaves in water and drinking it as a herbal tea.
  1. Relieves Cold, Flu, and Congestion
  • The peel and leaves are rich in essential oils like citronellal and limonene, which help clear sinuses and ease coughing.
  • Steam inhalation using crushed kaffir lime leaves or peel can relieve nasal congestion.
  1. Hair and Scalp Treatment
  • Traditionally, the juice is used to cleanse the scalp, treat dandruff, and strengthen hair roots.
  • Often mixed with coconut oil or water and used as a natural shampoo.
  1. Anti-inflammatory and Antibacterial
  • The essential oil from the peel has antimicrobial properties, helping to prevent infections, especially on the skin.
  • Used in topical treatments for minor cuts, rashes, or insect bites.
  1. Stress Relief and Mental Clarity
  • The strong citrus aroma is used in aromatherapy to relieve stress, anxiety, and mental fatigue.
  • Leaves or peel may be added to baths for relaxation.
  1. Oral Health
  • In some traditional practices, the juice or peel is used as a natural mouthwash to combat bad breath and reduce gum inflammation.
  1. Blood Purifier (Traditional Belief)

Some traditional healers use decoctions of the leaves or peel to "cleanse the blood," though this is more cultural than scientifically proven.