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LB Muscle and Back REL-XSTR delivers fast-acting, extra-strength relief from minor aches and pains associated with sore muscles, backaches, arthritis, strains, and sprains. Each caplet contains 500 mg of acetaminophen and 200 mg of methocarbamol, a trusted muscle relaxant that works to ease tension and discomfort. Ideal for those needing effective daytime relief without sedation, this dual-action formula helps you stay active while targeting both pain and muscle stiffness. Easy to swallow and gentle on the stomach, it’s the go-to solution for everyday muscular pain management.