Efficascent Oil (Extra Strength) is a liniment especially formulated for fast and effective relief of rheumatism back pains, muscular pains, joint pains, lumbago, stiff neck, headache, flatulence, insect bites, minor sprains and strains, cramps, itchiness, and other skin irritations. This is the same trusted brand, but with a stronger formulation and deeper penetrating heat for faster relief of tedious muscles or body joints. Ideal for expectant mothers and little children for the relief of gas pains, headaches, itchiness, and minor burns.