Naproxen

🧮 Dose calculator

Mild to moderate pain · Regimen source: FDA Naproxen · 2.4

• • First dose 500 mg, then 250 mg every 6–8 h as needed; max 1,250 mg/day. FDA Naproxen · 2.4

Enter age (weight is optional for this regimen).

👥 Special populations

• 🤰 PregnancyDangerous / avoid

  Label: can cause fetal harm. Dangerous in pregnancy. FDA Naproxen · 8.1

  “… losure of ductus arteriosus), use during pregnancy (particularly starting at 30-weeks of gestation, or third trimester) should be avoided.”

• 🤱 BreastfeedingUse with caution

  Label: use with caution while breastfeeding; see the label text. FDA Naproxen · 8.2

  “Risk Summary The naproxen anion has been found in the milk of lactating women at a concentration equivalent to approximately 1% of maximum naproxen concentration in plasma.”

• 👶 ChildrenUse with caution

  The label has conditions, age limits or notes for children; the label sentence is quoted below. FDA Naproxen · 8.4

  “Safety and effectiveness in pediatric patients below the age of 2 years have not been established.”

• 👴 Older adultsUse with caution

  Label: use with caution in older adults, usually starting at the low end of the dose range. FDA Naproxen · Boxed Warning

  “Elderly patients and patients with a prior history of peptic ulcer disease and/or GI bleeding are at greater risk for serious GI events [ see Warnings and Precautions (5.2) ] .”

• ⚥ Females & males of reproductive potentialUse with caution

  Label has advice on pregnancy testing, contraception or fertility for females and males. FDA Naproxen · 8.3

  “Infertility Females Based on the mechanism of action, the use of prostaglandin-mediated NSAIDs, including naproxen tablets may delay or prevent rupture of ovarian follicles, which has been associated with reversible infertility in some women.”