Stop using celecoxib and call your doctor at once if you have a serious side effect such as: 1  chest pain, weakness, shortness of breath, slurred speech, problems with vision or balance; 2  black, bloody, or tarry stools;  coughing up blood or vomit that looks like coffee grounds;
To convert milligrams (mg) to milliliters (ml), the number of milligrams must be multiplied by the density of the liquid, which equals the volume in liters,and then divided by 1,000 to convert liters to milliliters. The density of each liquid is unique.
For oral dosage forms (capsules, tablets, or liquid): Adultsâ25 to 50 milligrams (mg) every four to six hours as needed. Children 4 years of age and olderâ1 to 1.5 mg per kg (0.45 to 0.7 mg per pound) of body weight every four to six hours as needed. Children and infants up to 4 years of ageâUse is not recommended .