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Ursodiol 300 mg Capsule, 100-count — NDC 59651-0421-01 package photo
Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.

Ursodiol 300 mg Capsule, 100-count — NDC 59651-421-01 (Billing 59651-0421-01)

by Aurobindo Pharma Limited · 100 CAPSULE in 1 BOTTLE

This is a package of 100 capsules of Ursodiol 300 mg Capsule from Aurobindo Pharma Limited, marketed since Nov 2022 and currently FDA-listed; retail pharmacies pay about $0.4292 per capsule (NADAC). It is the main listing for this product, which comes in 2 package sizes.

NDC 59651-0421-01
🏷️ FDA NDC (as labeled) 59651-421-01 billing pads the product segment with a zero
This package
Contains100-count Cost per ea$0.4292 NADAC Per package$42.92 / 100 capsules Pack sizes2 compare ↓
Also priced by: Medicaid pays $0.7017/unit · Part D plans $0.8106/unit — full pricing hub ↓
Main listing for product 59651-421 · Also comes in: 1000 capsules 59651-421-11
Rx only Generic On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

NDC database record

One package, one record: these facts belong to NDC 59651-421-01 alone.

Record
FDA NDC Directory package listing · Human prescription drug
Code segments
59651 labeler · 421 product · 01 package
Listing certified through
Dec 31, 2026
Billing quantity
100 EA per package
Barcode (UPC-A, from the NDC)
3 5965142101 7
Medicaid fills, this package
39,650 prescriptions in the last four reported quarters
FDA record last changed
Jul 24, 2026

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 59651-421-01
Product NDC 59651-421
11-digit billing NDC 59651042101
NCPDP billing unit EA — each (per item)
RxCUI 858747
UNII 724L30Y2QR
Application # ANDA214849
SPL Set ID 631339fc-548d-4cd5-8cf3-60e1590f79f6
Established class (EPC) Bile Acid
Chemical class Bile Acids and Salts
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2022-11-28
Route ORAL
Dosage form CAPSULE
Substance URSODIOL
TE code (Orange Book) AB · RLD · RS

Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification

GPI-14 52100040000120
GCN Seq No 003095
GCN 01070
HICL code 001370
Ingredient (HICL) Ursodiol
HIC1 code D
Therapeutic class — broad (HIC1) Biliary System/Gastro-Intestinal System
HIC2 code D7
Therapeutic class — intermediate (HIC2) Act Primarily On Liver/Biliary Tract
HIC3 code D7A
Therapeutic class — specific (HIC3) Bile Salts
AHFS code 56:14.00.00
AHFS class Cholelitholytic Agents
FDB label name URSODIOL 300 MG CAPSULE
FDB brand name Ursodiol
Legend status F — Federal legend — prescription drug or device
Quick answers
  • GSN (GCN sequence number): 003095
  • GCN: 01070
  • GPI-14 (Medi-Span): 52100040000120
  • HICL (First Databank): 001370
  • AHFS class code: 56:14.00.00
  • RxCUI (RxNorm): 858747
Why two NDCs? The FDA registers this code as 59651-421-01 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 59651-0421-01. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

RxNorm drug class

This medicine belongs to the Bile Acid class.

Pharmacologic class Bile Acid
Drug family (ATC) Bile acids and derivatives
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

Label name URSODIOL 300 MG CAPSULE Ingredient Ursodiol
📗 Our plain-language guide HelloPharmacist
  • It depends on the product. Ursodiol capsules are used to dissolve certain cholesterol gallstones and to prevent gallstones during rapid weight loss. Urso 250, Urso Forte, and ursod...
  • It’s taken by mouth. For gallstones, capsules are usually divided into 2 or 3 doses a day. For PBC, tablets are taken in two to four divided doses with food. Follow your prescripti...
  • Stomach-related effects are the most common, such as belly pain, diarrhea, constipation, and nausea. Headache and dizziness can also happen. Call your doctor about severe belly pai...
  • Yes. Cholestyramine, colestipol, and aluminum-based antacids may reduce how much ursodiol works. Estrogens, birth control pills, and clofibrate can work against it for gallstones....
📖 Read our full Ursodiol guide →
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer eaPer package
Retail pharmacies payNADAC · weekly $0.429 $42.92 / 100 capsules
Medicaid paysCMS SDUD · 12 mo $0.7017 $70.17 / 100 capsules
Medicare drug plans payPart D · Q2 2026 $0.8106 $81.06 / 100 capsules
NADAC price history (per ea) — tap or hover for the price & month
Dec 2023 Jan 2026 May 2026 Sep 2026 $0.533 $0.416
▼ Down 11% over the last 13 months.
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

Packaging — all sizes for this product

Package NDCDescription Per unit Per pack Marketing startMarketing endStatus
59651-0421-01 You're viewing this Main listing 100 CAPSULE in 1 BOTTLE $0.4292 / ea $42.92 2022-11-28 — Active
59651-0421-11 59651-421-11 1000 CAPSULE in 1 BAG — — — — Active

You're viewing the smallest of 2 pack sizes for this product.

In Medicaid, this is the most-dispensed pack of this product — about 100% of fills over the last four reported quarters. See all packs ↓

Pack size FAQ

What quantity is in this package?
This is a 100-count package — 100 capsule in 1 bottle.
How does this package differ from NDC 59651-0421-11?
Both are Ursodiol 300 mg Capsule — the drug itself is identical. This page's package is the 100-count one, while NDC 59651-0421-11 is the 1000 capsules package.
What NDC number is used to bill for this package of Ursodiol 300 mg Capsule?
Use the 11-digit billing form listed in the identifiers section of this page. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

Prices are the latest CMS NADAC pharmacy acquisition cost per NDC; per-pack figures are per-unit × pack quantity, shown only when the pack is denominated in the same measure NADAC prices.

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Ursodiol 300 mg 50268-0797-15 AvPAK 50 capsules $0.416 — Availability likely save 3%
Ursodiol 300 mg 72664-0217-01 VGYAAN 100 capsules $0.421 AB Availability likely save 2%
Ursodiol 300 mg 00527-1326-01 Lannett 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 00591-3159-01 Actavis 100 capsules $0.429 — Availability likely —
Ursodiol 300 mg 00904-6221-06 Major 50 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 10702-0237-01 KVK-Tech, 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 24658-0780-01 PuraCap 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 42385-0946-01 Laurus 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 42806-0503-01 Epic 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mgthis 59651-0421-01 Aurobindo 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 60687-0100-01 American 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 62135-0430-60 Chartwell 60 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 69238-1540-01 Amneal 100 capsules $0.429 — Availability likely —
Ursodiol 300 mg 70710-1483-01 Zydus 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 72603-0613-01 NorthStar 100 capsules $0.429 AB Availability likely —
Ursodiol 300 mg 24658-0999-10 PuraCap 1000 capsules — AB FDA listed —
Ursodiol 300 mg 42291-0923-01 AvKARE 100 capsules — AB FDA listed —
Ursodiol 300 mg 43063-0871-01 PD-Rx 100 capsules — AB FDA listed —
Ursodiol 300 mg 51407-0754-01 Golden 100 capsules — AB FDA listed —
Ursodiol 300 mg 64380-0844-04 Strides 30 capsules — AB FDA listed —
Ursodiol 300 mg 70771-1524-01 Zydus 100 capsules — AB FDA listed —
Ursodiol 300 mg 72162-2168-01 Bryant 100 capsules — AB FDA listed —
Ursodiol 300 mg 72162-2619-01 Bryant 100 capsules — AB FDA listed —
Ursodiol 300 mg 50268-0864-13 AvPAK 30 capsules — AB FDA listed —
About this product: this is a generic version of the medicine. FDA equivalence ratings are shown when available, and other versions are listed above, least expensive first.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

Availability & generic status

🏛️
2022
On the market since
Nov 2022
📍
2026
Currently FDA-listed
4 years listed
🔓
·
Generic on the market
this product is a generic
✅This is a generic drug

This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

What it looks like

Color Pink / White
ShapeCapsule
ImprintUROH;300
Size21 mm
ScoringNot scored
One label can cover several strengths, so colors may be combined — always confirm a loose pill against the dispensed prescription label or a pharmacist.
Where does this data come from?
Physical description (imprint, shape, color, scoring, coating) from this product’s FDA Structured Product Labeling (SPL), mirrored from DailyMed / openFDA.

Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.

  • UNII 1K09F3G675
    Ferric oxide red is an inorganic iron compound used as a colorant in medicines. It gives tablets, capsules, or other dosage forms a red or reddish tint for identification and appearance.
  • UNII XM0M87F357
    A dark iron oxide compound that gives medicines their black or dark color. It's used as a colorant in tablets and capsules to help identify the product and make it visually distinctive.
  • UNII 2G86QN327L
    Gelatin is a protein derived from animal collagen, commonly used in medicines as a gelling agent and capsule material. It helps create soft or hard capsule shells that hold and release medication, and can also thicken liquid formulations.
  • UNII 70097M6I30
    Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
  • UNII WZH3C48M4T
    Potassium hydroxide is a strong alkaline chemical used in medicines to adjust and maintain the pH level of liquid formulations, helping keep the product stable and the active ingredients effective.
  • UNII 46N107B71O
    Shellac is a natural resin secreted by the lac beetle. It's used as a coating on tablets and capsules to control how quickly the medicine dissolves and to improve appearance and stability.
  • UNII ETJ7Z6XBU4
    Silicon dioxide is a naturally occurring mineral used as a glidant and anti-caking agent. It helps powder ingredients flow smoothly and prevents clumping during manufacturing and storage.
  • UNII O8232NY3SJ
    A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.
  • UNII 15FIX9V2JP
    Titanium dioxide is a bright white mineral powder commonly used as a colorant and opacifying agent. It makes pills and tablets white or lighter in color and helps make coatings non-transparent.

9 inactive ingredients listed in the exact product block matched to this NDC.

Where does this data come from?
Data sourced from official FDA Structured Product Labeling (SPL) via DailyMed — ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

Manufacturer & labeler

LabelerAurobindo Pharma Limited
Application holderAUROBINDO PHARMA LTD
FDA applicationANDA214849 (ANDA)
Labeler code59651
First marketedNov 2022
Product typeHuman Prescription Drug
Portfolio1,456 products on file

More NDCs from Aurobindo Pharma Limited labeler code 59651

The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Very long sections are excerpted here and marked; the full text is on DailyMed (linked in the sources below). Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration ⛔ Contraindications ⚠️ Warnings 🤒 Adverse Reactions 🔄 Drug Interactions 🤰 Pregnancy 🧒 Pediatric Use 🧓 Geriatric Use 🆘 Overdosage 🧬 Clinical Pharmacology 📦 How Supplied / Storage and Handling 📋 Description ⚠️ Precautions 🍼 Nursing Mothers 📄 Carcinogenesis, Mutagenesis, Impairment of Fertility 📄 Package Label / Principal Display Panel
🎯 Indications and Usage 82 words ▾

INDICATIONS AND USAGE Ursodiol capsules are indicated for patients with radiolucent, noncalcified gallbladder stones < 20 mm in greatest diameter in whom elective cholecystectomy would be undertaken except for the presence of increased surgical risk due to systemic disease, advanced age, idiosyncratic reaction to general anesthesia, or for those patients who refuse surgery. Safety of use of ursodiol capsules beyond 24 months is not established. Ursodiol capsules are indicated for the prevention of gallstone formation in obese patients experiencing rapid weight loss.

⏱️ Dosage and Administration 139 words ▾

DOSAGE AND ADMINISTRATION Gallstone Dissolution The recommended dose for ursodiol capsules treatment of radiolucent gallbladder stones is 8 to 10 mg/kg/day given in 2 or 3 divided doses. Ultrasound images of the gallbladder should be obtained at 6-month intervals for the first year of ursodiol capsules therapy to monitor gallstone response. If gallstones appear to have dissolved, ursodiol capsules therapy should be continued and dissolution confirmed on a repeat ultrasound examination within 1 to 3 months.

Most patients who eventually achieve complete stone dissolution will show partial or complete dissolution at the first on-treatment reevaluation. If partial stone dissolution is not seen by 12 months of ursodiol capsules therapy, the likelihood of success is greatly reduced. Gallstone Prevention The recommended dosage of ursodiol capsules for gallstone prevention in patients undergoing rapid weight loss is 600 mg/day (300 mg b.i.d.).

⛔ Contraindications 57 words ▾

CONTRAINDICATIONS Ursodiol capsules will not dissolve calcified cholesterol stones, radiopaque stones, or radiolucent bile pigment stones. Hence, patients with such stones are not candidates for ursodiol capsules therapy. Patients with compelling reasons for cholecystectomy including unremitting acute cholecystitis, cholangitis, biliary obstruction, gallstone pancreatitis, or biliary-gastrointestinal fistula are not candidates for ursodiol capsules therapy.

Allergy to bile acids.

⚠️ Warnings 67 words ▾

WARNINGS Enteroliths in Patients with Risk for Intestinal Stenosis or Stasis There have been rare postmarketing reports of ursodiol-treated patients who developed enteroliths (bezoars) resulting in obstructive symptoms that required surgical intervention. These patients had medical conditions that predisposed them to intestinal stenosis or stasis (e.g., surgical enteroanastomoses, Crohn's disease). If a patient presents with obstructive gastrointestinal symptoms, hold ursodiol until a clinical evaluation has been conducted.

🤒 Adverse Reactions ~2 min read ▾

ADVERSE REACTIONS The nature and frequency of adverse experiences were similar across all groups. The following tables provide comprehensive listings of the adverse experiences reported that occurred with a 5% incidence level: GALLSTONE DISSOLUTION Ursodiol Placebo 8 to 10 mg/kg/day (N = 155) (N = 159) N (%) N (%) Body as a Whole Allergy 8 (5.2) 7 (4.4) Chest Pain 5 (3.2) 10 (6.3) Fatigue 7 (4.5) 8 (5.0) Infection Viral 30 (19.4) 41 (25.8) Digestive System Abdominal Pain 67 (43.2) 70 (44.0) Cholecystitis 8 (5.2) 7 (4.4) Constipation 15 (9.7) 14 (8.8) Diarrhea 42 (27.1) 34 (21.4) Dyspepsia 26 (16.8) 18 (11.3) Flatulence 12 (7.7) 12 (7.5) Gastrointestinal Disorder 6 (3.9) 8 (5.0) Nausea 22 (14.2) 27 (17.0) Vomiting 15 (9.7) 11 (6.9) Musculoskeletal System Arthralgia 12 (7.7) 24 (15.1) Arthritis 9 (5.8) 4 (2.5) Back Pain 11 (7.1) 18 (11.3) Myalgia 9 (5.8) 9 (5.7) Nervous System Headache 28 (18.1) 34 (21.4) Insomnia 3 (1.9) 8 (5.0) Respiratory System Bronchitis 10 (6.5) 6 (3.8) Coughing 11 (7.1) 7 (4.4) Pharyngitis 13 (8.4) 5 (3.1) Rhinitis 8 (5.2) 11 (6.9) Sinusitis 17 (11.0) 18 (11.3) Upper Respiratory Tract Infection 24 (15.5) 21 (13.2) Urogenital System Urinary Tract Infection 10 (6.5) 7 (4.4) GALLSTONE PREVENTION Ursodiol Placebo 600 mg (N = 322) (N = 325) N (%) N (%) Body as a Whole Fatigue 25 (7.8) 33 (10.2) Infection Viral 29 (9.0) 29 (8.9) Influenza-like Symptoms 21 (6.5) 19 (5.8) Digestive System Abdominal Pain 20 (6.2) 39 (12.0) Constipation 85 (26.4) 72 (22.2) Diarrhea 81 (25.2) 68 (20.9) Flatulence 15 (4.7) 24 (7.4) Nausea 56 (17.4) 43 (13.2) Vomiting 44 (13.7) 44 (13.5) Musculoskeletal System Back Pain 38 (11.8) 21 (6.5) Musculoskeletal Pain 19 (5.9) 15 (4.6) Nervous System Dizziness 53 (16.5) 42 (12.9) Headache 80 (24.8) 78 (24.0) Respiratory System Pharyngitis 10 (3.1) 19 (5.8) Sinusitis 17 (5.3) 18 (5.5) Upper Respiratory Tract Infection 40 (12.4) 35 (10.8) Skin and Appendages Alopecia 17 (5.3) 8 (2.5) Urogenital System Dysmenorrhea 18 (5.6) 19 (5.8) Postmarketing Experience The following adverse reactions, presented by system organ class in alphabetical order, have been identified during post-approval use of ursodiol.

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Gastrointestinal disorders : enteroliths (bezoars)

🔄 Drug Interactions 78 words ▾

Drug Interactions Bile acid sequestering agents such as cholestyramine and colestipol may interfere with the action of ursodiol by reducing its absorption. Aluminum-based antacids have been shown to adsorb bile acids in vitro and may be expected to interfere with ursodiol in the same manner as the bile acid sequestering agents. Estrogens, oral contraceptives, and clofibrate (and perhaps other lipid-lowering drugs) increase hepatic cholesterol secretion, and encourage cholesterol gallstone formation and hence may counteract the effectiveness of ursodiol.

🤰 Pregnancy 150 words ▾

Pregnancy Reproduction studies have been performed in rats and rabbits with ursodiol doses up to 200-fold the therapeutic dose and have revealed no evidence of impaired fertility or harm to the fetus at doses of 20- to 100-fold the human dose in rats and at 5-fold the human dose (highest dose tested) in rabbits. Studies employing 100- to 200-fold the human dose in rats have shown some reduction in fertility rate and litter size. There have been no adequate and well-controlled studies of the use of ursodiol in pregnant women, but inadvertent exposure of 4 women to therapeutic doses of the drug in the first trimester of pregnancy during the ursodiol trials led to no evidence of effects on the fetus or newborn baby.

Although it seems unlikely, the possibility that ursodiol can cause fetal harm cannot be ruled out; hence, the drug is not recommended for use during pregnancy.

🧒 Pediatric Use 15 words ▾

Pediatric Use The safety and effectiveness of ursodiol in pediatric patients have not been established.

🧓 Geriatric Use 107 words ▾

Geriatric Use In worldwide clinical studies of ursodiol, approximately 14% of subjects were over 65 years of age (approximately 3% were over 75 years old). In a subgroup analysis of existing clinical trials, patients greater than 56 years of age did not exhibit statistically significantly different complete dissolution rates from the younger population. No age-related differences in safety and effectiveness were found.

Other reported clinical experience has not identified differences in response in elderly and younger patients. However, small differences in efficacy and greater sensitivity of some elderly individuals taking ursodiol cannot be ruled out. Therefore, it is recommended that dosing proceed with caution in this population.

🆘 Overdosage 76 words ▾

OVERDOSAGE Neither accidental nor intentional overdosing with ursodiol has been reported. Doses of ursodiol in the range of 16 to 20 mg/kg/day have been tolerated for 6 to 37 months without symptoms by 7 patients. The LD 50 for ursodiol in rats is over 5000 mg/kg given over 7 to 10 days and over 7500 mg/kg for mice. The most likely manifestation of severe overdose with ursodiol would probably be diarrhea, which should be treated symptomatically.

🧬 Clinical Pharmacology ~3 min read ▾

CLINICAL PHARMACOLOGY About 90% of a therapeutic dose of ursodiol is absorbed in the small bowel after oral administration. After absorption, ursodiol enters the portal vein and undergoes efficient extraction from portal blood by the liver (i.e., there is a large “first-pass” effect) where it is conjugated with either glycine or taurine and is then secreted into the hepatic bile ducts. Ursodiol in bile is concentrated in the gallbladder and expelled into the duodenum in gallbladder bile via the cystic and common ducts by gallbladder contractions provoked by physiologic responses to eating.

Only small quantities of ursodiol appear in the systemic circulation and very small amounts are excreted into urine. The sites of the drug’s therapeutic actions are in the liver, bile, and gut lumen. Beyond conjugation, ursodiol is not altered or catabolized appreciably by the liver or intestinal mucosa.

A small proportion of orally administered drug undergoes bacterial degradation with each cycle of enterohepatic circulation. Ursodiol can be both oxidized and reduced at the 7-carbon, yielding either 7-keto-lithocholic acid or lithocholic acid, respectively. Further, there is some bacterially catalyzed deconjugation of glyco- and tauro-ursodeoxycholic acid in the small bowel.

Free ursodiol, 7-keto-lithocholic acid, and lithocholic acid are relatively insoluble in aqueous media and larger proportions of these compounds are lost from the distal gut into the feces. Reabsorbed free ursodiol is reconjugated by the liver. Eighty percent of lithocholic acid formed in the small bowel is excreted in the feces, but the 20% that is absorbed is sulfated at the 3-hydroxyl group in the liver to relatively insoluble lithocholyl conjugates which are excreted into bile and lost in feces.

Absorbed 7-keto-lithocholic acid is stereospecifically reduced in the liver to chenodiol. Lithocholic acid causes cholestatic liver injury and can cause death from liver failure in certain species unable to form sulfate conjugates. Lithocholic acid is formed by 7-dehydroxylation of the dihydroxy bile acids (ursodiol and chenodiol) in the gut lumen.

The 7-dehydroxylation reaction appears to be alpha-specific, i.e., chenodiol is more efficiently 7-dehydroxylated than ursodiol and, for equimolar doses of ursodiol and chenodiol, levels of lithocholic acid appearing in bile are lower with the former. Man has the capacity to sulfate lithocholic acid. Although liver injury has not been associated with ursodiol therapy, a reduced capacity to sulfate may exist in some individuals, but such a deficiency has not yet been clearly demonstrated.

Pharmacodynamics Ursodiol suppresses hepatic synthesis and secretion of cholesterol, and also inhibits intestinal absorption of cholesterol. It appears to have little inhibitory effect on synthesis and secretion into bile of endogenous bile acids, and does not appear to affect secretion of phospholipids into bile. With repeated dosing, bile ursodeoxycholic acid concentrations reach a steady-state in about 3 weeks.

Although insoluble in aqueous media, cholesterol can be solubilized in at least two different ways in the presence of dihydroxy bile acids. In addition to solubilizing cholesterol in micelles, ursodiol acts by an apparently unique mechanism to cause dispersion of cholesterol as liquid crystals in aqueous media. Thus, even though administration of high doses (e.g., 15 to 18 mg/kg/day) does not result in a concentration of ursodiol higher than 60% of the total bile acid pool, ursodiol-rich bile effectively solubilizes cholesterol.

The overall effect of ursodiol is to increase the concentration level at which saturation of cholesterol occurs. The various actions of ursodiol combine to change the bile of patients with gallstones from cholesterol-precipitating to cholesterol-solubilizing, thus resulting in bile conducive to cholesterol stone dissolution. After ursodiol dosing is stopped, the concentration of the bile acid in bile falls expone… [Excerpted — this section continues on DailyMed.]

📦 How Supplied / Storage and Handling 86 words ▾

HOW SUPPLIED Ursodiol Capsules, USP 300 mg are pink opaque cap and white opaque body, hard gelatin capsules filled with white to off white powder, imprinted with ‘UROH’ on cap and ‘300’ on body. They are available as follows: Bottles of 100 NDC 59651-421-01 Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature]. Dispense in a tight container (USP).

Distributed by: Aurobindo Pharma USA, Inc. 279 Princeton-Hightstown Road East Windsor, NJ 08520 Manufactured by: Aurobindo Pharma Limited Hyderabad-500 032, India Revised: 09/2023

📋 Description 139 words ▾

DESCRIPTION Ursodiol capsules, USP are a bile acid available as 300 mg capsules suitable for oral administration. Ursodiol USP (ursodeoxycholic acid), a naturally occurring bile acid found in small quantities in normal human bile and in the biles of certain other mammals. It is a bitter-tasting, white or almost white crystalline powder practically insoluble in water; freely soluble in ethanol (96 percent), slightly soluble in acetone, practically insoluble in methylene chloride.

The chemical name for ursodiol is 3α,7β-dihydroxy-5β-cholan-24-oic acid (C 24 H 40 O 4 ). Ursodiol USP has a molecular weight of 392.58. Its structure is shown below: Inactive Ingredients: Colloidal silicon dioxide, corn starch and magnesium stearate.

The hard gelatin capsule shells contain gelatin, iron oxide red and titanium dioxide. The capsules are imprinted with black ink containing black iron oxide, potassium hydroxide and shellac. chemical structer

⚠️ Precautions ~3 min read ▾

PRECAUTIONS Liver Tests Ursodiol therapy has not been associated with liver damage. Lithocholic acid, a naturally occurring bile acid, is known to be a liver-toxic metabolite. This bile acid is formed in the gut from ursodiol less efficiently and in smaller amounts than that seen from chenodiol.

Lithocholic acid is detoxified in the liver by sulfation and, although man appears to be an efficient sulfater, it is possible that some patients may have a congenital or acquired deficiency in sulfation, thereby predisposing them to lithocholate-induced liver damage. Abnormalities in liver enzymes have not been associated with ursodiol therapy and, in fact, ursodiol has been shown to decrease liver enzyme levels in liver disease. However, patients given ursodiol should have SGOT (AST) and SGPT (ALT) measured at the initiation of therapy and thereafter as indicated by the particular clinical circumstances.

Drug Interactions Bile acid sequestering agents such as cholestyramine and colestipol may interfere with the action of ursodiol by reducing its absorption. Aluminum-based antacids have been shown to adsorb bile acids in vitro and may be expected to interfere with ursodiol in the same manner as the bile acid sequestering agents. Estrogens, oral contraceptives, and clofibrate (and perhaps other lipid-lowering drugs) increase hepatic cholesterol secretion, and encourage cholesterol gallstone formation and hence may counteract the effectiveness of ursodiol.

Carcinogenesis, Mutagenesis, Impairment of Fertility Ursodeoxycholic acid was tested in 2-year oral carcinogenicity studies in CD-1 mice and Sprague-Dawley rats at daily doses of 50, 250, and 1000 mg/kg/day. It was not tumorigenic in mice. In the rat study, it produced statistically significant dose-related increased incidences of pheochromocytomas of adrenal medulla in males (p = 0.014, Peto trend test) and females (p = 0.004, Peto trend test).

A 78-week rat study employing intrarectal instillation of lithocholic acid and tauro-deoxycholic acid, metabolites of ursodiol and chenodiol, has been conducted. These bile acids alone did not produce any tumors. A tumor-promoting effect of both metabolites was observed when they were co-administered with a carcinogenic agent.

Results of epidemiologic studies suggest that bile acids might be involved in the pathogenesis of human colon cancer in patients who had undergone a cholecystectomy, but direct evidence is lacking. Ursodiol is not mutagenic in the Ames test. Dietary administration of lithocholic acid to chickens is reported to cause hepatic adenomatous hyperplasia.

Pregnancy Reproduction studies have been performed in rats and rabbits with ursodiol doses up to 200-fold the therapeutic dose and have revealed no evidence of impaired fertility or harm to the fetus at doses of 20- to 100-fold the human dose in rats and at 5-fold the human dose (highest dose tested) in rabbits. Studies employing 100- to 200-fold the human dose in rats have shown some reduction in fertility rate and litter size. There have been no adequate and well-controlled studies of the use of ursodiol in pregnant women, but inadvertent exposure of 4 women to therapeutic doses of the drug in the first trimester of pregnancy during the ursodiol trials led to no evidence of effects on the fetus or newborn baby.

Although it seems unlikely, the possibility that ursodiol can cause fetal harm cannot be ruled out; hence, the drug is not recommended for use during pregnancy. Nursing Mothers It is not known whether ursodiol is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when ursodiol is administered to a nursing mother.

Pediatric Use The safety and effectiveness of ursodiol in pediatric patients have not been established. Geriatric Use In worldwide clinical studies of ursodiol, approximately 14% of subjects were over 65 years of age (approximately 3% were over 75 years old). In a subgroup analysis of existing clinical trials, p… [Excerpted — this section continues on DailyMed.]

🍼 Nursing Mothers 33 words ▾

Nursing Mothers It is not known whether ursodiol is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when ursodiol is administered to a nursing mother.

📄 Carcinogenesis, Mutagenesis, Impairment of Fertility 165 words ▾

Carcinogenesis, Mutagenesis, Impairment of Fertility Ursodeoxycholic acid was tested in 2-year oral carcinogenicity studies in CD-1 mice and Sprague-Dawley rats at daily doses of 50, 250, and 1000 mg/kg/day. It was not tumorigenic in mice. In the rat study, it produced statistically significant dose-related increased incidences of pheochromocytomas of adrenal medulla in males (p = 0.014, Peto trend test) and females (p = 0.004, Peto trend test).

A 78-week rat study employing intrarectal instillation of lithocholic acid and tauro-deoxycholic acid, metabolites of ursodiol and chenodiol, has been conducted. These bile acids alone did not produce any tumors. A tumor-promoting effect of both metabolites was observed when they were co-administered with a carcinogenic agent.

Results of epidemiologic studies suggest that bile acids might be involved in the pathogenesis of human colon cancer in patients who had undergone a cholecystectomy, but direct evidence is lacking. Ursodiol is not mutagenic in the Ames test. Dietary administration of lithocholic acid to chickens is reported to cause hepatic adenomatous hyperplasia.

📄 Package Label / Principal Display Panel 32 words ▾

PACKAGE LABEL-PRINCIPAL DISPLAY PANEL - 300 mg (100 Capsules Bottle) NDC 59651-421-01 Rx only Ursodiol Capsules, USP 300 mg AUROBINDO 100 Capsules PACKAGE LABEL-PRINCIPAL DISPLAY PANEL - 300 mg (100 Capsules Bottle)

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

Medicaid utilization & spend

📍 This exact package only: Medicaid data is reported per full 11-digit NDC — labeler, product and pack size — so every number here is for this package alone, not the drug overall. Other pack sizes report separately.
💊 Pharmacy benefit only: These are Medicaid outpatient pharmacy claims, billed by NDC. They exclude the medical benefit — clinic- or hospital-administered drugs billed under HCPCS J-codes — so drugs used mostly that way (e.g. Avastin, Lucentis, Keytruda) can look low or missing here. That’s expected, not an error.
📅 Q1 2025 – Q1 2026 · 5 quarters of data
ⓘ The newest quarter is usually incomplete when first published; states restate recent quarters in later CMS releases, so the latest figures typically revise upward. State coverage-policy changes can also shift quarter-to-quarter totals.
Prescriptions last 4 qtrs
39.7K
Units reimbursed last 4 qtrs
3.4M
Gross reimbursed last 4 qtrs
$2.36M
Avg / prescription
$59.41
Avg / unit
$0.7017
Latest quarter Q1 2026
9.1KRx
Medicaid pays / ea
$0.7017
gross reimbursed
vs
NADAC / ea
$0.4292
acquisition cost
=
Spread
+$0.2725
+63% vs cost
What Medicaid paid per ea (before rebates; includes the pharmacy’s dispensing fee) compared with NADAC — the average price pharmacies pay to buy the drug. A positive spread means Medicaid reimbursed more than the purchase price, before manufacturer rebates.
Fee-for-service vs managed care ⓘ
43% FFS 57% MCO
Fee-for-service · 17,064 Rx Managed care · 22,586 Rx
State Medicaid map
Alaska: no data reported AK Maine: 3,418 units · 245 per 100k residents ME Washington: 23,144 units · 296 per 100k residents WA Idaho: 11,543 units · 588 per 100k residents ID Montana: 1,122 units · 99.1 per 100k residents MT North Dakota: 1,860 units · 238 per 100k residents ND Minnesota: 40,849 units · 712 per 100k residents MN Wisconsin: 51,047 units · 864 per 100k residents WI Michigan: 187,791 units · 1,871 per 100k residents MI New York: 438,222 units · 2,239 per 100k residents NY Vermont: 5,881 units · 909 per 100k residents VT New Hampshire: 15,796 units · 1,127 per 100k residents NH Oregon: 36,398 units · 860 per 100k residents OR Nevada: 20,240 units · 634 per 100k residents NV Wyoming: no data reported WY South Dakota: 1,050 units · 114 per 100k residents SD Iowa: 26,836 units · 837 per 100k residents IA Illinois: 95,114 units · 758 per 100k residents IL Indiana: 77,820 units · 1,134 per 100k residents IN Ohio: 228,502 units · 1,939 per 100k residents OH Pennsylvania: 236,730 units · 1,826 per 100k residents PA New Jersey: 132,637 units · 1,428 per 100k residents NJ Massachusetts: 214,201 units · 3,060 per 100k residents MA California: 530,008 units · 1,360 per 100k residents CA Utah: 11,937 units · 349 per 100k residents UT Colorado: 35,674 units · 607 per 100k residents CO Nebraska: 4,144 units · 210 per 100k residents NE Missouri: 37,976 units · 613 per 100k residents MO Kentucky: 79,259 units · 1,751 per 100k residents KY West Virginia: 23,396 units · 1,322 per 100k residents WV Virginia: 89,869 units · 1,031 per 100k residents VA Maryland: 71,525 units · 1,157 per 100k residents MD Connecticut: 70,453 units · 1,948 per 100k residents CT Rhode Island: 21,202 units · 1,936 per 100k residents RI Arizona: 45,327 units · 610 per 100k residents AZ New Mexico: 9,392 units · 444 per 100k residents NM Kansas: 8,664 units · 295 per 100k residents KS Arkansas: 6,858 units · 224 per 100k residents AR Tennessee: 20,576 units · 289 per 100k residents TN North Carolina: 110,554 units · 1,020 per 100k residents NC South Carolina: 31,676 units · 590 per 100k residents SC Delaware: 15,747 units · 1,527 per 100k residents DE Oklahoma: 18,064 units · 446 per 100k residents OK Louisiana: 39,032 units · 853 per 100k residents LA Mississippi: 10,371 units · 353 per 100k residents MS Alabama: 11,039 units · 216 per 100k residents AL Georgia: 66,402 units · 602 per 100k residents GA D.C.: 7,849 units · 1,156 per 100k residents DC Hawaii: 7,415 units · 517 per 100k residents HI Texas: 24,818 units · 81.4 per 100k residents TX Florida: 71,637 units · 317 per 100k residents FL
Units reimbursed · per 100k residents
81.43,060
gray = no data reported ⓘ
Colors are per 100,000 residents, so big states don’t automatically dominate. Tap or hover a state for its actual totals.
Tap or hover a state
…for its Medicaid breakdown
🏆 Top states by units · per 100k residents
1 Massachusetts 3,060 /100k
2 New York 2,239 /100k
3 Connecticut 1,948 /100k
4 Ohio 1,939 /100k
5 Rhode Island 1,936 /100k
6 Michigan 1,871 /100k
7 Pennsylvania 1,826 /100k
8 Kentucky 1,751 /100k
National units — by quarter
💵 About the dollar figures: “reimbursed” is what Medicaid paid pharmacies before confidential manufacturer rebates, so the program’s real net cost is lower than these numbers. Fee-for-service and managed-care claims are combined unless split above. Source: CMS State Drug Utilization Data; per-100k rates use 2023 Census population estimates.

Medicaid utilization by pack size

Medicaid (SDUD) totals over the four most recent reported quarters for every package size of this drug — handy when a specific package (e.g. a starter/titration pack) carries little or no Medicaid volume on its own.
100 capsules this page59651-0421-01 39,650 Rx · $2,355,459
1000 capsules59651-0421-11 No Medicaid data
Drug total (last 4 qtrs): 39,650 Rx · 3,356,848 units · $2,355,459 gross reimbursed
Tap a pack size to open its page. Source: CMS State Drug Utilization Data, last 4 quarters.

Medicare Part D spend CMS · PART D · 2026 (Q1)

Medicare Part D (outpatient prescription) spending for Ursodiol — the program that covers self-administered drugs. 18 manufacturers.
⚠️ Drug-level data: CMS publishes Part D spending by drug, not by NDC — these figures combine every manufacturer, strength and package size sold under the name Ursodiol. That’s a different level of aggregation than the Medicaid card above, which is specific to this exact 11-digit NDC (pack size included), so the two aren’t directly comparable.
Period
Total Part D spend
$19.22M
Claims incl. refills
135.9K
Beneficiaries
83.7K
Spend / beneficiary
$229.71
Spend / claim
$141.44
Trend by period
💵 About the dollar figures: spending is what Part D plans paid before confidential manufacturer rebates, so the program’s real net cost is lower. A blank patient count means fewer than 11 people — CMS hides counts that small to protect privacy. Source: CMS Medicare Quarterly Part D Spending by Drug (data.cms.gov), updated quarterly.
← 59651-0420-11 · Aurobindo 59651-0422-01 · Aurobindo →
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.