Efficascent Oil Extra Strength is a topical analgesic oil containing methyl salicylate and camphor-menthol in a 50ml bottle. This extra strength formula provides relief from muscle aches, joint pains, and minor body discomforts. This product is a medicinal/therapeutic oil that should be used externally only. The green-colored solution comes in a glass bottle with a safety seal cap. As this is a medicinal product, please consult healthcare professionals for proper usage instructions and precautions.