RiteMED Mefenamic Acid Dosage/Direction for Use

Like other NSAIDs, the lowest effective dose should be used for the shortest possible time. After observing the response to initial therapy with this product, the dose and frequency should be adjusted to suit individual patient needs.
This medicine is given orally and may be taken with food or milk if stomach upset occurs.
250 mg: Usual Recommended Dose in Adults and Adolescents older than 14 years: 1 to 2 tablets every 8 hours, as needed, or, as directed by a doctor.
For the relief of dysmenorrhea and premenstrual syndrome (PMS): 1 to 2 tablets every 8 hours while symptoms persist ("period pains" and other associated symptoms), or, as directed by a doctor.
For menstrual cramps (period pain), mefenamic acid is usually taken during each period as soon as the cramps begin and continued for a few days until the pain goes away.
For heavy menstrual periods, mefenamic acid is taken from the beginning of the period and continued according to the doctor's advice.
Do not take for more than 7 days unless directed by a doctor.
Missed Dose: If a dose is missed, take the next dose if still needed for pain and the subsequent dose every 8 hours thereafter.
Do not double the dose.
500 mg: Usual Recommended Dose in Adults and Adolescents older than 14 years: 1 tablet every 8 hours as needed, or as directed by a physician.
For the relief of dysmenorrhea and premenstrual syndrome (PMS): 1 tablet every 8 hours while symptoms persist ("period pains" and other associated symptoms or as directed by a physician.
For relief of primary dysmenorrhea, mefenamic acid should be initiated with the onset of bleeding and associated symptoms, and should not be taken for more than 2 to 3 days.
In menorrhagia, mefenamic acid should be given on the first day of excessive bleeding and continued as directed by a physician.
For relief of acute pain, mefenamic acid should not be given for more than 7 days.