Updated: March 26, 2026
What Is K-Phos Neutral? Uses, Dosage, and What You Need to Know in 2026
Author
Peter Daggett
ChatGPT
Claude
Gemini
Overview
K-Phos Neutral is a prescription phosphate supplement used for low phosphate levels and kidney stone prevention. Here's a complete guide to its uses, dosage, and key facts for 2026.
Is K-Phos Neutral in stock near you?
Based on 31 real pharmacy checks · 1 patients helped
Verified 50m ago
K-Phos Neutral is a prescription phosphate supplement containing potassium and sodium phosphate. It's been used clinically for more than 30 years to treat low phosphate levels in the blood (hypophosphatemia) and to help prevent certain types of kidney stones. If you've been prescribed K-Phos Neutral or are considering asking your doctor about it, this guide covers everything you need to know.
What Is K-Phos Neutral?
K-Phos Neutral is the brand name for a combination phosphate supplement manufactured by Beach Products, Inc. (Tampa, FL). Each white, film-coated tablet contains:
852 mg dibasic sodium phosphate, anhydrous
155 mg monobasic potassium phosphate
130 mg monobasic sodium phosphate monohydrate
Each tablet yields approximately
250 mg (8 mmol) of elemental phosphorus — providing 25% of the US recommended daily allowance (RDA) for adults
298 mg (13.0 mEq) of sodium
45 mg (1.1 mEq) of potassium
Check live stock now.
What Is K-Phos Neutral Used For?
K-Phos Neutral has two primary uses:
Phosphate supplementation: To treat hypophosphatemia (low blood phosphate levels). Phosphorus is essential for bone health, energy metabolism, and proper cell function. Low levels can result from poor nutrition, alcoholism, certain medications (antacids, some diuretics), hyperparathyroidism, refeeding syndrome, and inherited conditions like X-linked hypophosphatemia (XLH).
Urinary acidification and kidney stone prevention: K-Phos Neutral increases phosphate and pyrophosphate in urine, which acidifies the urine and lowers urinary calcium. This makes it harder for calcium oxalate and calcium phosphate kidney stones to form, and helps prevent recurrence.
Is K-Phos Neutral a Controlled Substance?
No. K-Phos Neutral is not a controlled substance and has no DEA schedule. It can be prescribed by any licensed prescriber and can be called in by phone, faxed, or sent electronically. There are no restrictions on the number of refills.
Dosage and How to Take K-Phos Neutral
Standard dosing per the prescribing information:
Adults: 1 to 2 tablets four times daily (with meals and at bedtime)
Children over 4 years: 1 tablet four times daily
Children under 4: Use only as directed by a physician
Always take with a full 8 oz (240 mL) glass of water. Take with meals and at bedtime to reduce gastrointestinal side effects. Do not take with antacids containing aluminum, calcium, or magnesium — separate them by at least 2-3 hours.
Who Should NOT Take K-Phos Neutral?
K-Phos Neutral is contraindicated in:
Patients with infected phosphate stones
Patients with severe renal impairment (kidney function less than 30% of normal)
Patients with hyperphosphatemia (too much phosphorus in the blood)
Use with caution in patients with cardiac disease, edema, hypertension, renal disease, cirrhosis, hypoparathyroidism, or severe burns. The sodium content (298 mg per tablet) should be considered in patients on sodium-restricted diets.
Generic Names and Equivalent Products
K-Phos Neutral is available under several names:
Brand: K-Phos Neutral (Beach Products)
Generic equivalents: Phospha 250 Neutral (Rising Pharmaceuticals), Phospho-Trin 250 Neutral (Patrin Pharma)
Generic drug name: potassium phosphate / sodium phosphate
50K+Found
99%Rate
6+on average
How to Fill Your K-Phos Neutral Prescription
K-Phos Neutral can be tricky to find at some pharmacies. If you're having difficulty locating it near you, see our guide on how to find K-Phos Neutral in stock, or use medfinder to find a pharmacy near you that can fill your prescription.
Real-time availability
Is K-Phos Neutral in stock near you?
Verified 50m ago
Based on 31 real pharmacy checks · 1 patients helped
K-Phos Neutral is in a shortage right now — Medfinder calls pharmacies near you to track down the ones that have it.
As of July 23, 2026, 2:01 PM ET, K-phos Neutral is currently experiencing a shortage. Across 31 pharmacy checks Medfinder placed in the last 30 days, K-phos Neutral was confirmed in stock 3% of the time.
- Pharmacy checks
- 31
- FDA status
- Not listed
- Updated
- 50m ago
K-phos Neutral is not on the FDA's active shortage list. Medfinder's own pharmacy calls put real-time availability at 3% across 31 checks in the last 30 days. Availability varies by metro, with the most pharmacy activity recorded around Seattle, WA. These numbers are recomputed continuously from live pharmacy calls, so this page reflects current conditions rather than a static estimate.
K-Phos Neutral availability questions
Is K-phos Neutral in stock right now?
As of July 23, 2026, 2:01 PM ET, K-phos Neutral was confirmed in stock at 3% of 31 pharmacies Medfinder checked in the last 30 days. Availability changes daily, so we re-check in real time when you search.
How does Medfinder help me find K-phos Neutral?
Medfinder calls pharmacies in your area to verify whether K-phos Neutral and your specific dose are in stock, then sends you the pharmacy name, address, and phone number.
Need K-Phos Neutral? We'll find the pharmacy that has it.
Sources: FDA Drug Shortages + Medfinder pharmacy data · Methodology · Full K-Phos Neutral data
Frequently Asked Questions
K-Phos Neutral is used primarily for two purposes: (1) treating hypophosphatemia — low phosphate levels in the blood due to conditions like poor nutrition, alcoholism, hyperparathyroidism, or inherited disorders — and (2) preventing calcium kidney stones by acidifying the urine and lowering urinary calcium levels.
Yes. K-Phos Neutral is a prescription phosphate supplement providing 250 mg of elemental phosphorus per tablet, which equals 25% of the US recommended daily allowance of phosphorus for adults. It differs from over-the-counter phosphorus supplements in that it is prescription-only and delivers a therapeutic dose specifically formulated for clinical phosphate deficiency.
The standard adult dose is 1-2 tablets taken four times daily (with meals and at bedtime), totaling 4-8 tablets per day. This provides 1,000-2,000 mg of elemental phosphorus daily. Your doctor will determine the right dose based on your phosphate levels and clinical condition.
K-Phos Neutral is a film-coated tablet. Check with your pharmacist before splitting or crushing, as the coating may affect absorption or tolerability. The brand K-PHOS Original (a related but different product) can be dissolved in water, but K-Phos Neutral tablets are intended to be swallowed whole unless your pharmacist advises otherwise.
Medfinder Editorial Standards
Medfinder's mission is to ensure every patient gets access to the medications they need. We are committed to providing trustworthy, evidence-based information to help you make informed health decisions.
Read our editorial standardsPatients searching for K-Phos Neutral also looked for:
More about K-Phos Neutral
Why Is K-Phos Neutral So Hard to Find? [Explained for 2026]
How to Find K-Phos Neutral in Stock Near You (Tools + Tips)
Alternatives to K-Phos Neutral If You Can't Fill Your Prescription
K-Phos Neutral Shortage Update: What Patients Need to Know in 2026
K-Phos Neutral Shortage: What Providers and Prescribers Need to Know in 2026
How to Help Your Patients Find K-Phos Neutral in Stock: A Provider's Guide
38,224 have already found their meds with Medfinder.
Start your search today.
Your information is private and never shared.