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Potassium Phosphate and Sodium Phosphate
Pronunciation
U.S. Brand Names
Generic Available
Synonyms
Pharmacological Index
Use
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Overdosage/Toxicology
Drug Interactions
Usual Dosage
Dietary Considerations
Monitoring Parameters
Dental Health: Local Anesthetic/Vasoconstrictor Precautions
Dental Health: Effects on Dental Treatment
Patient Information
Nursing Implications
Dosage Forms

Pronunciation
(poe TASS ee um FOS fate & SOW dee um FOS fate)

U.S. Brand Names
K-Phos® Neutral; Neutra-Phos®; Uro-KP-Neutral®

Generic Available

Yes


Synonyms
Sodium Phosphate and Potassium Phosphate

Pharmacological Index

Electrolyte Supplement, Oral


Use

Treatment of conditions associated with excessive renal phosphate loss or inadequate GI absorption of phosphate; to acidify the urine to lower calcium concentrations; to increase the antibacterial activity of methenamine; reduce odor and rash caused by ammonia in urine


Pregnancy Risk Factor

C


Contraindications

Addison's disease, hyperkalemia, hyperphosphatemia, infected urolithiasis or struvite stone formation, patients with severely impaired renal function


Warnings/Precautions

Use with caution in patients with renal disease, hyperkalemia, cardiac disease and metabolic alkalosis


Adverse Reactions

>10%: Gastrointestinal: Diarrhea, nausea, stomach pain, flatulence, vomiting

1% to 10%:

Cardiovascular: Bradycardia

Endocrine & metabolic: Hyperkalemia

Neuromuscular & skeletal: Weakness

Respiratory: Dyspnea

<1%: Arrhythmia, chest pain, edema, mental confusion, tetany (with large doses of phosphate), alkalosis, weight gain, throat pain, decreased urine output, phlebitis, paresthesias, paralysis, pain/weakness of extremities, bone pain, arthralgia, acute renal failure, shortness of breath, thirst


Overdosage/Toxicology

Symptoms of overdose include muscle weakness, paralysis, peaked T waves, flattened P waves, prolongation of QRS complex, ventricular arrhythmias, tetany, calcium phosphate precipitation

Removal of potassium can be accomplished by various means; removal through the GI tract with Kayexalate® administration; by way of the kidney through diuresis, mineralocorticoid administration or increased sodium intake; by hemodialysis or peritoneal dialysis; or by shifting potassium back into the cells by insulin and glucose infusion; calcium chloride reverses cardiac effects.


Drug Interactions

Decreased effect/levels with aluminum and magnesium-containing antacids or sucralfate which can act as phosphate binders

Increased effect/levels with potassium-sparing diuretics or ACE inhibitors; salicylates


Usual Dosage

All dosage forms to be mixed in 6-8 oz of water prior to administration

Adults: 1-2 capsules (250-500 mg phosphorus/8-16 mmol) 4 times/day after meals and at bedtime


Dietary Considerations

Should be administered after meals


Monitoring Parameters

Serum potassium, sodium, calcium, phosphate, EKG


Dental Health: Local Anesthetic/Vasoconstrictor Precautions

No information available to require special precautions


Dental Health: Effects on Dental Treatment

No effects or complications reported


Patient Information

Do not swallow, open capsule and dissolve in 6-8 oz of water; powder packets are to be mixed in 6-8 oz of water; tablets should be crushed and mixed in 6-8 oz of water


Nursing Implications

Tablets may be crushed and stirred vigorously to speed dissolution


Dosage Forms

See table in Potassium Phosphate monograph


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