Swelling in your feet is known medically as edema. It occurs when fluid becomes trapped in the tissue. Edema is a symptom, and should not be just dismissed. Causes of this swelling vary, but one key component may be water retention. If you are a woman, this retention may occur just prior to your period. Other possible culprits include high blood pressure and heart disease. Evaluation will help identify the initiating medical cause of the problem. In order to treat the symptom and reduce the swelling in your feet, you probably need to change your diet. Some oral vitamins may help reduce water retention, but should only be taken after you know what is causing the edema. Always consult your doctor.
Take a daily calcium supplement of 1,200 mg. According to the Mayo Clinic, calcium supplements may reduce the symptoms of premenstrual syndrome and help eliminate water from tissue. You should not take extra calcium if you have been diagnosed with any kidney illness, such as nephritis or kidney disease, without talking to your doctor.
Add a magnesium supplement of 200 to 400 mg per day to your diet. The Mayo Clinic reports that extra magnesium may reduce water retention. However, the clinic does advise that magnesium will cause problems for those diagnosed with heart or kidney disease.
Purchase a multivitamin that contains 1,200 mg of calcium and 200 mg of magnesium as an alternative. Check the labels of the vitamins to ensure they offer both minerals in the proper quantities. Do not take two pills to get the right dosage of calcium and magnesium. If necessary, purchase separate supplements of these two minerals to add to what is available in the multivitamin. The Harvard School of Public Health also recommends extra vitamin D for overall health to possibly prevent some of the illnesses that may cause edema.