Pain is "an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage." It is the feeling common to such experiences as stubbing a toe, burning a finger and putting iodine on a cut. The International Association for the Study of Pain (IASP) classification system describes pain according to five categories: duration and severity, anatomical location, body system involved, cause, and temporal characteristics (intermittent, constant, etc.) Pain is usually transitory, lasting only until the noxious stimulus is removed or the underlying damage or pathology has healed, but some painful conditions, such as rheumatoid arthritis, peripheral neuropathy, cancer and idiopathic pain, may persist for years. Pain that lasts a long time is called chronic, and pain that resolves quickly is called acute. Pain is the most common reason for people to use complementary and Traditional Medicine. PAIN-O (THAILAM) is formulated as a external application for treating pain.

Pain-O oil is composed of extracts Sarjarasa (Shorea robusta), Dinesavalli (Ventilago maderaspatna), Karnaspota (Cardiospermum halicacabum), Bala (Sida cordifolia) in Tailaparnah (Eucalyptus oil), Tila (Sesamum indicum), and oil of Eranda (Ricinus communis)

PAIN-O (THAILAM) is formulated as external application for alleviating low back pain, pain in knee joints, muscular pain, sprains and stiffness.