Maxidol Liquid Gels with Naproxen Sodium provides up to 12 hours of effective pain relief to help you feel better and stay active during your menstrual cycle. Available in convenient and easy to take liquid filled capsules, Maxidol contains naproxen sodium which provides effective relief of pain such as menstrual cramps, headaches, backache, migraine pain and muscle pain for up to 12 hours. Product information is provided by the product vendor. This content is a summary for informational purposes only and does not have all possible information about this product. It should not be used as a substitute for advice from health care professionals, as this information alone does not assure that this product is safe, effective, or appropriate for you. For more detailed information on this product, including reported and possible side effects and contraindications, refer to the manufacturer's monograph, or speak with a health care provider.