One box of 20 count Midol Long Lasting Relief Menstrual Pain Relief Caplets with Acetaminophen Effective up to 8 hour pain relief of pain due to premenstrual and menstrual symptoms With extended-release acetaminophen for back pain, muscle pain, headache relief and period pain relief Relieves premenstrual and menstrual symptoms such as pain from period cramps Available in portable and easy-to-take caplet form for menstrual pain relief Recommended for adults and children 12 years and older Take two caplets with water every 8 hours but not more than six caplets in 24 hours