potassium phosphate (generic name)

It is used to treat patients who are not receiving enough phosphorus from their diet or who need increased amounts
(FOS fer uhs sawlts)
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What is this medicine?

PHOSPHORUS SALTS (FOS fer uhs sawlts) are used to increase the amount of phosphorus in the body. It is used to treat patients who are not receiving enough phosphorus from their diet or who need increased amounts.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • Addison's disease
  • dehydration
  • heart disease
  • high levels of phosphate or potassium in the blood
  • kidney disease or stones
  • sodium-restricted diet
  • an unusual or allergic reaction to phosphorus salts, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

Take this medicine by mouth. Follow the directions on the package or prescription label. Dissolve this medicine in water or juice as directed. Shake or stir well before taking. The mixture may be stored in the refrigerator for better taste. Take your medicine at regular intervals. Do not take your medicine more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following medications:
  • sevelamer

This medicine may also interact with the following medications:

  • antacids containing aluminum, magnesium, or calcium
  • calcium supplements
  • chlorpropamide
  • cyclosporine
  • diuretics
  • eplerenone
  • iron supplements
  • medicines called ACE inhibitors like captopril, enalapril, lisinopril
  • methadone
  • potassium supplements
  • stimulant medicines for attention disorders, weight loss, or to stay awake
  • testosterone and other similar steroids
  • vitamin D supplements

What should I watch for while using this medicine?

Visit your health care professional for regular checks on your progress. Your doctor may order blood work while you are taking this medicine.

Follow a healthy diet. Taking a vitamin supplement does not replace the need for a balanced diet.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • breathing problems
  • confusion
  • fast, irregular heartbeat
  • feeling faint or lightheaded, falls
  • increased thirst
  • muscle cramps
  • seizures
  • swelling of feet or lower legs
  • tingling, pain, or numbness in the hands or feet
  • trouble passing urine or change in the amount of urine
  • unusually weak or tired
  • weight gain

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • diarrhea
  • headache
  • nausea, vomiting
  • stomach pain

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Protect from light. Throw away any unused medicine after the expiration date.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Last Updated: July 24, 2009
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