Tiger Balm Neck and Shoulder Rub is an over-the-counter (OTC) topical analgesic, meaning it can be purchased without a prescription. Topical analgesics work by creating a sensation of warmth or coolness on the skin, which can help to distract from pain signals and provide temporary relief. They are often used to address minor aches and pains, such as muscle strains, sprains, and arthritis.