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MISOPROSTOL 200 ug Tablet, 100-count

by Micro Labs Limited · 100 TABLET in 1 BOTTLE (42571-254-01)
NDC 42571-0254-01
🏷️ FDA NDC (as labeled) 42571-254-01 billing pads the product segment with a zero
This package
Contains100-count Pack sizes2 compare ↓
Also priced by: Part D plans $0.8629/unit — full pricing hub ↓
Also comes in: 60 tablets 42571-0254-60
Rx only Generic Discontinued Non-controlled ⚠ Discontinued by firm
🗂️ Data synced Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →
⚠️
Excluded from the active FDA NDC Directory. The labeler reported this product as discontinued, so it is excluded from the active NDC Directory. The listing was last certified through Aug 2026. A label may still appear on DailyMed, but the NDC is no longer in the current FDA NDC Directory. Search the FDA NDC Directory ↗

🆔 Identity & classification

FDA NDC (as labeled) 42571-254-01
Product NDC 42571-254
11-digit billing NDC 42571025401
RxCUI 311727, 317128
UNII 0E43V0BB57
UPC 0342571253608, 0342571254605
Application # ANDA216872
SPL Set ID 54d26ca3-d309-4048-8699-a04b3854ef9c
Established class (EPC) Prostaglandin E1 Analog
Chemical class Prostaglandins E, Synthetic
DEA schedule Non-controlled
Marketing category ANDA
Marketing status Discontinued
FDA listing status Discontinued by firm (certified through Aug 2026)
Marketing start 2023-01-01
Route ORAL
Dosage form TABLET
Substance MISOPROSTOL
TE code (Orange Book) AB · RLD · RS
Why two NDCs? The FDA registers this code as 42571-254-01 — 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 → 42571-0254-01. 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 Prostaglandin E1 Analog class.

Pharmacologic class Prostaglandin E1 Analog
Drug family (ATC) Propionic acid derivatives, Prostaglandins, Prostaglandins
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.

🏭 Manufacturer & labeler

LabelerMicro Labs Limited
Application holderMICRO LABS LTD
FDA applicationANDA216872 (ANDA)
Labeler code42571
First marketedJan 2023
Product typeHuman Prescription Drug
Portfolio190 products on file
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.

🩺 Clinical

📗 Our plain-language guide HelloPharmacist
  • Your pain reliever — an NSAID like ibuprofen, aspirin, or diclofenac — is effective, but it can reduce your stomach's natural defenses and raise the risk of stomach ulcers over tim...
  • Why was I prescribed misoprostol along with my pain reliever?
  • Unfortunately, no — and it's worth knowing this upfront. Misoprostol is designed to prevent ulcers from forming, not to relieve the everyday stomach discomfort or pain that NSAIDs...
  • Will misoprostol help with the stomach pain my pain reliever causes?
📖 Read our full Misoprostol 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.

🧪 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.

We could not link this NDC to a current FDA Structured Product Label. An inactive-ingredient list is therefore not available from this source.
Where does this data come from?
Source: official FDA Structured Product Labeling (SPL) via DailyMed and the openFDA label index. Structured IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.

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.

💲 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 eachPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · Q2 2026 $0.8629 $86.29 / 100 tablets
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.

🔁 Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Misoprostol 200 ug 43386-0161-01 Lupin 100 tablets $0.666 FDA listed
Misoprostol 200 ug 43393-0023-04 GenBioPro, 4 tablets $0.700 AB FDA listed
Misoprostol 200 ug 43393-0024-04 GenBioPro, 4 tablets $0.734 AB Availability likely
Misoprostol 200 ug 43393-0200-48 GenBioPro, 48 tablets $0.734 AB Availability likely
Misoprostol 200 ug 50268-0555-60 AvPAK 60 tablets $0.734 AB Availability likely
misoprostol 200 ug 59762-5008-01 Mylan 60 tablets $0.734 AB Availability likely
Misoprostol 200 ug 60687-0746-01 American 100 tablets $0.734 AB Availability likely
Misoprostol 200 ug 70954-0444-10 ANI 60 tablets $0.734 AB Availability likely
Cytotec 200 ug 00025-1461-31 Pfizer 100 tablets AB FDA listed
Misoprostol 200 ug 40032-0161-01 Novel 100 tablets FDA listed
Misoprostol 200 ugthis 42571-0254-01 Micro 100 tablets AB Discontinued
Misoprostol 200 ug 54348-0148-00 PharmPak, 1 tablet FDA listed
Misoprostol 200 ug 55154-2145-00 Cardinal 10 tablets AB FDA listed
misoprostol 200 ug 67296-1936-01 Redpharm 10 tablets AB FDA listed
Misoprostol 200 ug 68071-4843-03 NuCare 3 tablets FDA listed
Misoprostol 200 ug 72789-0300-04 PD-Rx 4 tablets AB FDA listed
Misoprostol 200 ug 82804-0037-10 Proficient 10 tablets 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

🏛️
2023
On the market since
Jan 2023
📍
2026
Currently FDA-listed
3 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.

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

Medicare Part D (outpatient prescription) spending for Misoprostol — the program that covers self-administered drugs. 4 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 Misoprostol. 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
$714.7K
Claims incl. refills
21.5K
Beneficiaries
16.7K
Spend / beneficiary
$42.73
Spend / claim
$33.31
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.

🔬 Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for Misoprostol — the ingredient across all brands.

Top reported reactions

Pain1,472
Haemorrhage1,322
Abortion Incomplete1,159
Nausea1,031
Arthralgia977
Rheumatoid Arthritis805
Fatigue800

Reporter sex

16,478 reports

Serious outcomes

Death1,059
Disabling567
Reports over time (by year) — tap or hover for the count & year
2019 2021 2023 2026 1,376 154
Most recent year is provisional (FAERS lags ~3 months).
Where does this data come from?
Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
42571-0254-01 You're viewing this 100 TABLET in 1 BOTTLE (42571-254-01) 2023-01-01 Discontinued by firm
42571-0254-60 60 TABLET in 1 BOTTLE (42571-254-60) 2023-01-01 Discontinued by firm

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

Pack size FAQ

What quantity is in NDC 42571-0254-01?
NDC 42571-0254-01 is a 100-count package — 100 tablet in 1 bottle.
What is the difference between NDC 42571-0254-01 and NDC 42571-0254-60?
Both are MISOPROSTOL 200 ug Tablet — the drug itself is identical. NDC 42571-0254-01 is the 100-count package, while NDC 42571-0254-60 is the 60 tablets package.
What NDC number is used to bill for this package of MISOPROSTOL 200 ug Tablet?
Bill NDC 42571-0254-01 — the 11-digit billing format is 42571025401. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

🧭 About this NDC listing & data coverage

Finished prescription product No longer marketed (per FDA listing data)
What data is (and isn’t) available for this NDC — tap to expand
NDC identity (package / product / labeler codes) ✓ Available
Labeler ✓ Available
Product & package description ✓ Available
Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
Package photos — Not published for this NDC No photo available yet for this listing.
Inactive ingredients (structured) — Not published for this NDC The labeler did not submit a structured excipient list, or no SPL is available.
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data ✓ Available
HCPCS J-code billing crosswalk — Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
What does the discontinued status mean for this NDC?
The labeler reported a marketing end date (or the listing was delisted), so this specific package is no longer actively marketed. Remaining stock may still be dispensed for a time, and the NDC stays valid for historical records and claims — but data feeds (pricing, labeling) typically stop updating for it. Other package sizes or other manufacturers' versions of the same medication may still be marketed — see the equivalents section where available.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The FDA registers it as 42571-254-01, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 42571-0254-01, written without dashes as 42571025401. The Identity section at the top of this page lists every form of this code.
What do the three segments of this NDC mean?
In 42571-0254-01, the first segment (42571) is the labeler code FDA assigned to Micro Labs Limited; the middle segment (0254) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (01) identifies this exact package size and type. Together they name one specific package of one specific product.
Does this product come in other package sizes?
Yes — the FDA directory lists 1 other package presentation of this same product, including 60 tablets (42571-0254-60). Each has its own NDC and its own page — see the package list near the top of this page.
Who lists this product with the FDA?
Micro Labs Limited is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.

📄 Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🚨 Boxed Warning ~1 min read

WARNINGS MISOPROSTOL ADMINISTRATION TO WOMEN WHO ARE PREGNANT CAN CAUSE BIRTH DEFECTS, ABORTION, PREMATURE BIRTH OR UTERINE RUPTURE. UTERINE RUPTURE HAS BEEN REPORTED WHEN MISOPROSTOL WAS ADMINISTERED IN PREGNANT WOMEN TO INDUCE LABOR OR TO INDUCE ABORTION. THE RISK OF UTERINE RUPTURE INCREASES WITH ADVANCING GESTATIONAL AGES AND WITH PRIOR UTERINE SURGERY, INCLUDING CESAREAN DELIVERY (see also PRECAUTIONS and LABOR AND DELIVERY ).

MISOPROSTOL SHOULD NOT BE TAKEN BY PREGNANT WOMEN TO REDUCE THE RISK OF ULCERS INDUCED BY NONSTEROIDAL ANTI-INFLAMMATORY DRUGS (NSAIDs) (see CONTRAINDICATIONS , WARNINGS , and PRECAUTIONS ). PATIENTS MUST BE ADVISED OF THE ABORTIFACIENT PROPERTY AND WARNED NOT TO GIVE THE DRUG TO OTHERS. Misoprostol should not be used for reducing the risk of NSAID-induced ulcers in women of childbearing potential unless the patient is at high risk of complications from gastric ulcers associated with use of the NSAID, or is at high risk of developing gastric ulceration.

In such patients, misoprostol may be prescribed if the patient has had a negative serum pregnancy test within 2 weeks prior to beginning therapy. is capable of complying with effective contraceptive measures. has received both oral and written warnings of the hazards of misoprostol, the risk of possible contraception failure, and the danger to other women of childbearing potential should the drug be taken by mistake. will begin misoprostol only on the second or third day of the next normal menstrual period.

🎯 Indications and Usage 121 words

INDICATIONS AND USAGE Misoprostol tablets are indicated for reducing the risk of NSAID (nonsteroidal anti-inflammatory drugs, including aspirin)–induced gastric ulcers in patients at high risk of complications from gastric ulcer, e.g., the elderly and patients with concomitant debilitating disease, as well as patients at high risk of developing gastric ulceration, such as patients with a history of ulcer. Misoprostol tablets has not been shown to reduce the risk of duodenal ulcers in patients taking NSAIDs. Misoprostol tablets should be taken for the duration of NSAID therapy.

Misoprostol tablets has been shown to reduce the risk of gastric ulcers in controlled studies of 3 months’ duration. It had no effect, compared to placebo, on gastrointestinal pain or discomfort associated with NSAID use.

⏱️ Dosage and Administration 112 words

DOSAGE AND ADMINISTRATION The recommended adult oral dose of misoprostol for reducing the risk of NSAID-induced gastric ulcers is 200 mcg four times daily with food. If this dose cannot be tolerated, a dose of 100 mcg can be used. (See Clinical Pharmacology: Clinical studies . ) Misoprostol should be taken for the duration of NSAID therapy as prescribed by the physician.

Misoprostol should be taken with a meal, and the last dose of the day should be at bedtime. Renal impairment: Adjustment of the dosing schedule in renally impaired patients is not routinely needed, but dosage can be reduced if the 200-mcg dose is not tolerated. (See Clinical Pharmacology . )

Contraindications 41 words

CONTRAINDICATIONS See boxed WARNINGS . Misoprostol tablets should not be taken by pregnant women to reduce the risk of ulcers induced by nonsteroidal anti-inflammatory drugs (NSAIDs). Misoprostol tablets should not be taken by anyone with a history of allergy to prostaglandins.

⚠️ Warnings 36 words

WARNINGS See boxed WARNINGS . For hospital use only if misoprostol were to be used for cervical ripening, induction of labor, or for the treatment of serious post-partum hemorrhage, which are outside of the approved indication.

🤒 Adverse Reactions ~2 min read

ADVERSE REACTIONS The following have been reported as adverse events in subjects receiving misoprostol: Gastrointestinal: In subjects receiving misoprostol 400 or 800 mcg daily in clinical trials, the most frequent gastrointestinal adverse events were diarrhea and abdominal pain. The incidence of diarrhea at 800 mcg in controlled trials in patients on NSAIDs ranged from 14 to 40% and in all studies (over 5,000 patients) averaged 13%. Abdominal pain occurred in 13 to 20% of patients in NSAID trials and about 7% in all studies, but there was no consistent difference from placebo.

Diarrhea was dose related and usually developed early in the course of therapy (after 13 days), usually was self-limiting (often resolving after 8 days), but sometimes required discontinuation of misoprostol (2% of the patients). Rare instances of profound diarrhea leading to severe dehydration have been reported. Patients with an underlying condition such as inflammatory bowel disease, or those in whom dehydration, were it to occur, would be dangerous, should be monitored carefully if misoprostol is prescribed.

The incidence of diarrhea can be minimized by administering after meals and at bedtime, and by avoiding coadministration of misoprostol with magnesium-containing antacids. Gynecological: Women who received misoprostol during clinical trials reported the following gynecological disorders: spotting (0.7%), cramps (0.6%), hypermenorrhea (0.5%), menstrual disorder (0.3%) and dysmenorrhea (0.1%). Postmenopausal vaginal bleeding may be related to misoprostol administration.

If it occurs, diagnostic workup should be undertaken to rule out gynecological pathology. (See boxed WARNINGS. ) Elderly: There were no significant differences in the safety profile of misoprostol in approximately 500 ulcer patients who were 65 years of age or older compared with younger patients. Additional adverse events which were reported are categorized as follows: Incidence greater than 1%: In clinical trials, the following adverse reactions were reported by more than 1% of the subjects receiving misoprostol and may be causally related to the drug: nausea (3.2%), flatulence (2.9%), headache (2.4%), dyspepsia (2%), vomiting (1.3%), and constipation (1.1%).

However, there were no significant differences between the incidences of these events for misoprostol and placebo. Causal relationship unknown: The following adverse events were infrequently reported. Causal relationships between misoprostol and these events have not been established but cannot be excluded: Body as a whole: aches/pains, asthenia, fatigue, fever, chills, rigors, weight changes.

Skin: rash, dermatitis, alopecia, pallor, breast pain. Special senses: abnormal taste, abnormal vision, conjunctivitis, deafness, tinnitus, earache. Respiratory: upper respiratory tract infection, bronchitis, bronchospasm, dyspnea, pneumonia, epistaxis.

Cardiovascular: chest pain, edema, diaphoresis, hypotension, hypertension, arrhythmia, phlebitis, increased cardiac enzymes, syncope, myocardial infarction (some fatal), thromboembolic events (e.g., pulmonary embolism, arterial thrombosis, and CVA). Gastrointestinal: GI bleeding, GI inflammation/infection, rectal disorder, abnormal hepatobiliary function, gingivitis, reflux, dysphagia, amylase increase. Hypersensitivity: anaphylactic reaction Metabolic: glycosuria, gout, increased nitrogen, increased alkaline phosphatase.

Genitourinary: polyuria, dysuria, hematuria, urinary tract infection. Nervous system/Psychiatric: anxiety, change in appetite, depression, drowsiness, dizziness, thirst, impotence, loss of libido, sweating increase, neuropathy, neurosis, confusion. Musculoskeletal: arthralgia, myalgia, muscle cramps, stiffness, back pain.

Blood/Coagulation: anemia, abnormal differential, thrombocytopenia, purpura, ESR increased. To report SUSPECTED ADVERSE REACTIONS, contact Micro Labs USA, Inc. at 1-855-839-8195 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

🆘 Overdosage 115 words

OVERDOSAGE The toxic dose of misoprostol in humans has not been determined. Cumulative total daily doses of 1600 mcg have been tolerated, with only symptoms of gastrointestinal discomfort being reported. In animals, the acute toxic effects are diarrhea, gastrointestinal lesions, focal cardiac necrosis, hepatic necrosis, renal tubular necrosis, testicular atrophy, respiratory difficulties, and depression of the central nervous system.

Clinical signs that may indicate an overdose are sedation, tremor, convulsions, dyspnea, abdominal pain, diarrhea, fever, palpitations, hypotension, or bradycardia. Symptoms should be treated with supportive therapy. It is not known if misoprostol acid is dialyzable.

However, because misoprostol is metabolized like a fatty acid, it is unlikely that dialysis would be appropriate treatment for overdosage.

🧬 Clinical Pharmacology ~3 min read

CLINICAL PHARMACOLOGY Pharmacokinetics: Misoprostol is extensively absorbed, and undergoes rapid de-esterification to its free acid, which is responsible for its clinical activity and, unlike the parent compound, is detectable in plasma. The alpha side chain undergoes beta oxidation and the beta side chain undergoes omega oxidation followed by reduction of the ketone to give prostaglandin F analogs. In normal volunteers, misoprostol is rapidly absorbed after oral administration with a T max of misoprostol acid of 12 ± 3 minutes and a terminal half-life of 20 to 40 minutes.

There is high variability of plasma levels of misoprostol acid between and within studies but mean values after single doses show a linear relationship with dose over the range of 200 to 400 mcg. No accumulation of misoprostol acid was noted in multiple dose studies; plasma steady state was achieved within two days. Maximum plasma concentrations of misoprostol acid are diminished when the dose is taken with food and total availability of misoprostol acid is reduced by use of concomitant antacid.

Clinical trials were conducted with concomitant antacid, however, so this effect does not appear to be clinically important. Mean ± SD C max (pg/mL) AUC(0 to 4) (pg·hr/mL) T max (min) Fasting 811 ± 317 417 ± 135 14 ± 8 With Antacid 689 ± 315 349 ± 108* 20 ± 14 With High Fat Breakfast 303 ± 176* 373 ± 111 64 ± 79* * Comparisons with fasting results statistically significant, p<0.05. After oral administration of radiolabeled misoprostol, about 80% of detected radioactivity appears in urine.

Pharmacokinetic studies in patients with varying degrees of renal impairment showed an approximate doubling of T 1/2 , C max , and AUC compared to normals, but no clear correlation between the degree of impairment and AUC. In subjects over 64 years of age, the AUC for misoprostol acid is increased. No routine dosage adjustment is recommended in older patients or patients with renal impairment, but dosage may need to be reduced if the usual dose is not tolerated.

Drug interaction studies between misoprostol and several nonsteroidal anti-inflammatory drugs showed no effect on the kinetics of ibuprofen or diclofenac, and a 20% decrease in aspirin AUC, not thought to be clinically significant. Pharmacokinetic studies also showed a lack of drug interaction with antipyrine and propranolol when these drugs were given with misoprostol. Misoprostol given for 1 week had no effect on the steady state pharmacokinetics of diazepam when the two drugs were administered 2 hours apart.

The serum protein binding of misoprostol acid is less than 90% and is concentration- independent in the therapeutic range. After a single oral dose of misoprostol to nursing mothers, misoprostol acid was excreted in breast milk. The maximum concentration of misoprostol acid in expressed breast milk was achieved within 1 hour after dosing and was 7.6 pg/mL (CV 37%) and 20.9 pg/mL (CV 62%) after single 200 mcg and 600 mcg misoprostol administration, respectively.

The misoprostol acid concentrations in breast milk declined to < 1 pg/mL at 5 hours post-dose. Pharmacodynamics: Misoprostol has both antisecretory (inhibiting gastric acid secretion) and (in animals) mucosal protective properties. NSAIDs inhibit prostaglandin synthesis, and a deficiency of prostaglandins within the gastric mucosa may lead to diminishing bicarbonate and mucus secretion and may contribute to the mucosal damage caused by these agents.

Misoprostol can increase bicarbonate and mucus production, but in man this has been shown at doses 200 mcg and above that are also antisecretory. It is therefore not possible to tell whether the ability of misoprostol to reduce the risk of gastric ulcer is the result of its antisecretory effect, its mucosal protective effect, or both. In vitro studies on canine parietal cells using tritiated misoprostol acid as the ligand have led to the identification and characterization of specific prostaglandin receptors.

Recept…

📦 How Supplied / Storage and Handling 148 words

HOW SUPPLIED Misoprostol 100 mcg tablets are white to off white, round, biconvex, uncoated tablet debossed with “C” and “41” on one side and plain on the other side; supplied as: Bottles of 60 NDC 42571-253-60 Bottles of 120 NDC 42571-253-12 Misoprostol 200 mcg tablets are white to off white, round, biconvex, uncoated tablet debossed with “C” and “40” on one side and break line on the other side; supplied as: Bottles of 60 NDC 42571-254-60 Bottles of 100 NDC 42571-254-01 Store at or below 25°C (77°F), in a dry area.

The brands listed are trademarks of their respective owners and are not trademarks of Micro Labs Limited. The makers of these brands are not affiliated with and do not endorse Micro Labs or its products. Rx Only Manufactured by: Micro Labs Limited Goa- 403 722, INDIA.

Manufactured for: Micro Labs USA, Inc. Somerset, NJ 08873 Rev. 12/2022

📋 Description 72 words

DESCRIPTION Misoprostol oral tablets contain either 100 mcg or 200 mcg of misoprostol, a synthetic prostaglandin E 1 analog. Misoprostol USP contains approximately equal amounts of the two diastereomers presented below with their enantiomers indicated by (±): Misoprostol USP is a clear, colorless or light yellow viscous liquid. Very slightly soluble in water.

Inactive ingredients of tablets are colloidal silicon dioxide, hydrogenated castor oil, hypromellose, microcrystalline cellulose, and sodium starch glycolate. misotab-str.jpg

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