Magnesium salicylate tetrahydrate (C₁₄H₁₈MgO₁₀·4H₂O) is a specialty chemical reagent used primarily in pharmaceutical research and development as an oral analgesic and anti-inflammatory agent. It is effective for mild to moderate pain relief, including headaches, muscle aches, joint pain, back pain, menstrual cramps, and arthritis symptoms. The compound inhibits prostaglandin synthesis to reduce pain and inflammation. Its magnesium content provides mild supplementation benefits, though not primary. As a reagent-grade product (99% purity), it is suitable for laboratory synthesis, analytical standards, and formulation studies. Due to its salicylate structure, handle with caution in applications involving aspirin-sensitive models. Not intended for direct human consumption without pharmaceutical processing.