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Citric acid 66.8 MG/ML / potassium citrate 220 MG/ML Oral Solution — RxCUI 309318

Name: Citric acid 66.8 MG/ML / potassium citrate 220 MG/ML Oral Solution (RxCUI 309318)
Creator: Brian Staiger, PharmD

RxNorm drug concept · Semantic clinical drug

RxCUI 309318 Semantic clinical drug · SCD ● Current RxNorm concept 3 FDA products 4 package NDCs Snapshot Jul 14, 2026

This page is curated, coded, and maintained by Dr. Brian Staiger, PharmD

Compiled from public NLM RxNorm and FDA (openFDA NDC directory) data sources. Editorial policy

What you’re looking at: the standardized identity of one medicine, as the U.S. drug-data system sees it. Below — every FDA-listed product, package code, price benchmark, and billing code that maps to it.

🗂️ Key Facts

RxCUI309318

Official nameCitric acid 66.8 MG/ML / potassium citrate 220 MG/ML Oral Solution

Concept typeSemantic clinical drug (SCD)

RxNorm statusCurrent RxNorm concept

Also known asCitric Acid 66.8 MG/ML / K+ citrate 220 MG/ML Oral Solution; citric acid 334 MG / potassium citrate 1100 MG in 5 mL Oral Solution; citric acid 334 MG / potassium citrate 1100 MG per 5 ML Oral Solution; Citric Acid 66.8 MG/ML / Pot citrate 220 MG/ML Oral Solution

FDA products mapped3

Package NDCs mapped4

Reported Medicaid activity (SDUD)6,362 prescriptions · 36 state & territory Medicaid programs · latest period Q4 2025

RxNorm release07/06/2026

Snapshot dataJul 14, 2026

📖 Skip the Codes — Read It in Plain English.

Our pharmacist-built guide to Potassium Citrate: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist

Great question. Potassium citrate works in two main ways. First, it increases the amount of citrate in your urine — citrate acts like a natural stone-fighter by grabbing onto calci...
What exactly is potassium citrate doing to stop my kidney stones?
Yes, it really does matter. You should take your dose with meals or within 30 minutes after eating — or with a bedtime snack if you have a dose then. Taking it on an empty stomach...
Do I have to take this with food? Does it really matter?

📖 Read our full Potassium Citrate guide →

🕸️ Concept Web — How Citric acid 66.8 MG/ML / potassium citrate 220 M... Connects

One RxCUI never lives alone. Follow the path from the raw ingredient down to the exact strength-and-form concepts FDA products carry — every stop is a real RxNorm concept with its own identifier. Hover or focus any chip for what it means.

This page's concept Citric acid 66.8 MG/ML / potassium citrate 220 MG/ML Oral Solution RxCUI 309318 Semantic clinical drug · SCD

Every web starts here: one RxCUI, one fixed meaning in the RxNorm vocabulary.

Ingredients 3

The active substance itself — no strength, form, or brand attached yet.
- Citric acid 21183 IN
- Potassium citrate 54993 IN
- Citric acid / potassium citrate 214427 MIN
Brand names 1

The same medicine's trade names. A brand name alone says nothing about strength or form.
- Cytra-K 216319 BN
Dose forms 9

The ingredient poured into a form — tablet, solution, cream — still without one fixed strength.
- Citric acid / potassium citrate Oral Solution 373525 SCDF
- Citric acid / potassium citrate Oral Liquid Product 1152472 SCDG
- Citric acid / potassium citrate Oral Product 1152473 SCDG
- Citric acid / potassium citrate Oral Solution [Cytra-K] 364187 SBDF
- Cytra-K Oral Liquid Product 1175161 SBDG
- Cytra-K Oral Product 1175162 SBDG
- Oral Solution 316968 DF
- Oral Liquid Product 1151137 DFG
- +1 more in this family
Clinical & branded drugs 4

Ingredient + strength + dose form. These are the concepts real FDA products actually carry.
- Citric acid 66.8 MG/ML 315691 SCDC
- Potassium citrate 220 MG/ML 317470 SCDC
- Citric acid 66.8 MG/ML / potassium citrate 220 MG/ML Oral Solution [Cytra-K] 209304 SBD
- Citric acid 66.8 MG/ML / potassium citrate 220 MG/ML [Cytra-K] 569918 SBDC

Showing up to 8 concepts per family — 16 of 17 stored related concepts drawn.

These are official RxNorm vocabulary relationships — how concepts name and organize the same medicine. They do not establish therapeutic equivalence or substitutability: two concepts appearing in one web is never a statement that products can be swapped.

🔀 Generic ⇄ Brand Crosswalk

The same medicine has an unbranded (generic) identity and one or more brand-name identities — each with its own RxCUI. This is a naming relationship in RxNorm, not a statement that any two products are substitutable.

Generic (Clinical) Concepts

Citric acid 66.8 MG/ML SCDC · 315691
Potassium citrate 220 MG/ML SCDC · 317470
Citric acid / potassium citrate Oral Solution SCDF · 373525
Citric acid / potassium citrate Oral Liquid Product SCDG · 1152472
Citric acid / potassium citrate Oral Product SCDG · 1152473

Brand-Name Concepts

Citric acid 66.8 MG/ML / potassium citrate 220 MG/ML Oral Solution [Cytra-K] SBD · 209304
Citric acid 66.8 MG/ML / potassium citrate 220 MG/ML [Cytra-K] SBDC · 569918
Citric acid / potassium citrate Oral Solution [Cytra-K] SBDF · 364187
Cytra-K Oral Liquid Product SBDG · 1175161
Cytra-K Oral Product SBDG · 1175162
Cytra-K BN · 216319

📦 FDA Products & Package NDCs

3 products · 4 package NDCs

4 package NDCs map to RxCUI 309318 in the current snapshot — up to 50 per page. Each linked NDC opens its full package page.

Package NDC	Package	Brand / generic name	Labeler	Marketing start
00121-0676-16	473 mL in 1 BOTTLE (0121-0676-16)	Potassium Citrate and Citric Acid	PAI Holdings, LLC dba PAI Pharma	1997-10-07
62135-0435-24	2 TRAY in 1 BOX (62135-435-24) / 10 CUP in 1 TRAY / 5 mL in...	Potassium Citrate and Citric Acid	Chartwell RX, LLC	2025-04-04
62135-0435-47	473 mL in 1 BOTTLE (62135-435-47)	Potassium Citrate and Citric Acid	Chartwell RX, LLC	2022-12-08
68999-0435-24	2 TRAY in 1 BOX (68999-435-24) / 10 CUP in 1 TRAY / 5 mL in...	Potassium Citrate and Citric Acid	Chartwell Governmental & Specialty RX, LLC.	2026-02-16

Observed labelers: Chartwell RX, LLC (2) · Chartwell Governmental & Specialty RX, LLC. (1) · PAI Holdings, LLC dba PAI Pharma (1) — this is the FDA-listed mapping footprint, not sales, inventory, availability, or market share.

💲 Pricing (NADAC)

NADAC is CMS's National Average Drug Acquisition Cost — roughly what pharmacies pay to buy the drug. It is an acquisition benchmark, not your copay.

Per ml · median

$0.0526

Range $0.0526–$0.0526 · middle 50% $0.0526–$0.0526 · 2 NDCs

Latest compatible distributions from the CMS NADAC file · dataset watermark 2026-07-10. Prices vary by package and pharmacy; a distribution is shown instead of one misleading number. Rows the dataset is silent on carry no price. No zero-cost conclusion should be drawn.

🗃️ Sources & Limits

Atlas generation902fddb9-e9c1-4004-bf4c-dba4d51037c7

openFDA export observedJul 14, 2026

RxNorm release07/06/2026

Methodology2026-07-full-catalog-v1

A shared RxCUI does not prove interchangeability. Products mapped to the same concept are not thereby equivalent or substitutable — equivalence is a separate, product-level determination.
Listing here does not establish approval or coverage. Appearing in this snapshot is a data observation, not an FDA approval status or a payer coverage decision.
Missing data never means zero. A silent dataset (no price, no billing code, no utilization) means no observation — not that the real-world value is zero.
Counts describe the mapping footprint. Product, package, and labeler counts are the FDA-listed mapping footprint in this snapshot — not sales, inventory, availability, or market share.

This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.

Machine-readable JSON

Reference information about drug-concept identifiers and public regulatory data — not medical advice. Talk to your pharmacist or prescriber about your own medication.