Limitations of Use:

• YOSPRALA contains a delayed-release formulation of aspirin and it is not for use as the initial dose of aspirin therapy during onset of acute coronary syndrome, acute myocardial infarction or before percutaneous coronary intervention (PCI), for which immediate-release aspirin therapy is appropriate.
• YOSPRALA has not been shown to reduce the risk of gastrointestinal bleeding due to aspirin.
• Do not substitute YOSPRALA with the single-ingredient products of aspirin and omeprazole.

2.1 Recommended Dosage

• Take one tablet daily.
• YOSPRALA is available in combinations that contain 81 mg or 325 mg of aspirin. Generally 81 mg of aspirin has been accepted as an effective dose for secondary cardiovascular prevention. Providers should consider the need for 325 mg and refer to current clinical practice guidelines.

2.2 Administration Instructions

• Take YOSPRALA once daily at least 60 minutes before a meal.
• The tablets are to be swallowed whole with liquid. Do not split, chew, crush or dissolve the tablet.
• Use the lowest effective dose of YOSPRALA based on the individual patient's treatment goals and to avoid potential dose dependent adverse reactions including bleeding.
• If a dose of YOSPRALA is missed, advise patients to take it as soon as it is remembered. If it is almost time for the next dose, skip the missed dose. Take the next dose at the regular time. Patients should not take 2 doses at the same time unless advised by their doctor.
• Do not stop taking YOSPRALA suddenly as this could increase the risk of heart attack or stroke.

5.1 Coagulation Abnormalities

Even low doses of aspirin can inhibit platelet function leading to an increase in bleeding time. This can adversely affect patients with inherited (hemophilia) or acquired (liver disease or vitamin K deficiency) bleeding disorders. Monitor patients for signs of increased bleeding.

5.2 Gastrointestinal Adverse Reactions

Aspirin is associated with serious gastrointestinal (GI) adverse reactions, including inflammation, bleeding ulceration and perforation of the upper and lower GI tract. Other adverse reactions with aspirin include stomach pain, heartburn, nausea, and vomiting.

Serious GI adverse reactions reported in the clinical trials of YOSPRALA were: gastric ulcer hemorrhage in one of the 521 patients treated with YOSPRALA and duodenal ulcer hemorrhage in one of the 524 patients treated with enteric-coated aspirin. In addition, there were two cases of intestinal hemorrhage, one in each treatment group, and one patient treated with YOSPRALA experienced obstruction of the small bowel.

Although minor upper GI symptoms, such as dyspepsia, are common and can occur anytime during therapy, monitor patients for signs of ulceration and bleeding, even in the absence of previous GI symptoms. Inform patients about the signs and symptoms of GI adverse reactions.

If active and clinically significant bleeding from any source occurs in patients receiving YOSPRALA, discontinue treatment.

5.3 Bleeding Risk with Use of Alcohol

Counsel patients who consume three or more alcoholic drinks every day about the bleeding risks involved with chronic, heavy alcohol use while taking YOSPRALA.

5.4 Interaction with Clopidogrel

Avoid concomitant use of YOSPRALA with clopidogrel. Clopidogrel is a prodrug. Inhibition of platelet aggregation by clopidogrel is entirely due to an active metabolite. The metabolism of clopidogrel to its active metabolite can be impaired by use with concomitant medications, such as omeprazole, that interfere with CYP2C19 activity. Co-administration of clopidogrel with 80 mg omeprazole reduces the pharmacological activity of clopidogrel, even when administered 12 hours apart. When using YOSPRALA, consider alternative anti-platelet therapy [see Drug Interactions (7), Clinical Pharmacology (12.3)].

5.5 Interaction with Ticagrelor

Maintenance doses of aspirin above 100 mg reduce the effectiveness of ticagrelor in preventing thrombotic cardiovascular events. Avoid concomitant use of ticagrelor with the 325 mg/40 mg tablet strength of YOSPRALA [see Drug Interactions (7)].

5.6 Renal Failure

Avoid YOSPRALA in patients with severe renal failure (glomerular filtration rate less than 10 mL/minute). Regular use of aspirin is associated in a dose-dependent manner with an increased risk of chronic renal failure. Aspirin use decreases glomerular filtration rate and renal blood flow especially with patients with pre-existing renal disease. [see Use in Specific Populations (8.6), Clinical Pharmacology (12.3)].

5.7 Presence of Gastric Malignancy

In adults, response to gastric symptoms with YOSPRALA does not preclude the presence of gastric malignancy. Consider additional gastrointestinal follow-up and diagnostic testing in adult patients who experience gastric symptoms during treatment with YOSPRALA or have a symptomatic relapse after completing treatment. In older patients, also consider an endoscopy.

5.8 Acute Interstitial Nephritis

Acute interstitial nephritis has been observed in patients taking PPIs including omeprazole. Acute interstitial nephritis may occur at any point during PPI therapy and is generally attributed to an idiopathic hypersensitivity reaction. Discontinue YOSPRALA if acute interstitial nephritis develops [see Contraindications (4)].

5.9 Clostridium difficile-Associated Diarrhea

Published observational studies suggest that PPI-containing therapy like YOSPRALA may be associated with an increased risk of Clostridium difficile-associated diarrhea (CDAD), especially in hospitalized patients. This diagnosis should be considered for diarrhea that does not improve [see Adverse Reactions (6.2)].

Use the lowest dose and shortest duration of YOSPRALA appropriate to the condition being treated.

5.10 Bone Fracture

Several published observational studies suggest that PPI therapy may be associated with an increased risk for osteoporosis-related fractures of the hip, wrist, or spine. The risk of fracture was increased in patients who received high-dose, defined as multiple daily doses, and long-term PPI therapy (a year or longer). Use the lowest dose and shortest duration of YOSPRALA therapy appropriate to the condition being treated. Manage patients at risk for osteoporosis-related fractures according to established treatment guidelines [see Adverse Reactions (6.2)].

5.11 Cutaneous and Systemic Lupus Erythematosus

Cutaneous lupus erythematosus (CLE) and systemic lupus erythematosus (SLE) have been reported in patients taking PPIs, including omeprazole. These events have occurred as both new onset and an exacerbation of existing autoimmune disease. The majority of PPI-induced lupus erythematous cases were CLE.

The most common form of CLE reported in patients treated with PPIs was subacute CLE (SCLE), and occurred within weeks to years after continuous drug therapy in patients ranging from infants to the elderly.Generally, histological findings were observed without organ involvement.

Systemic lupus erythematosus (SLE) is less commonly reported than CLE in patients receiving PPIs. PPI associated SLE is usually milder than non-drug induced SLE. Onset of SLE typically occurred within days to years after initiating treatment, but some cases occurred days or years after initiating treatment. SLE occurred primarily in patients ranging from young adults to the elderly. The majority of patients presented with rash; however, arthralgia and cytopenia were also reported.

Avoid administration of PPIs for longer than medically indicated. If signs or symptoms consistent with CLE or SLE are noted in patients receiving YOSPRALA, discontinue the drug and refer the patient to the appropriate specialist for evaluation. Most patients improve with discontinuation of the PPI alone in 4 to 12 weeks. Serologicial testing (e.g., ANA) may be positive and elevated serologicial test results may take longer to resolve than clinical manifestations.

5.12 Hepatic Impairment

Long-term moderate to high doses of aspirin may result in elevations in serum ALT levels. These abnormalities resolve rapidly with discontinuation of aspirin. The hepatotoxicity of aspirin is usually mild and asymptomatic. Bilirubin elevations are usually mild or absent. Systemic exposure to omeprazole is increased in patients with hepatic impairment [see Clinical Pharmacology (12.3)]. Avoid YOSPRALA in patients with any degree of hepatic impairment [see Use in Specific Populations (8.7)].

5.13 Cyanocobalamin (Vitamin B-12) Deficiency

Daily treatment with any acid-suppressing medications over a long period of time (e.g., longer than 3 years) may lead to malabsorption of cyanocobalamin (vitamin B-12) caused by hypo- or achlorhydria. Rare reports of cyanocobalamin deficiency occurring with acid-suppressing therapy have been reported in the literature. This diagnosis should be considered if clinical symptoms consistent with cyanocobalamin deficiency are observed in patients treated with YOSPRALA.

5.14 Hypomagnesemia

Hypomagnesemia, symptomatic and asymptomatic, has been reported rarely in patients treated with PPIs for at least three months, in most cases after a year of therapy. Serious adverse events include tetany, arrhythmias, and seizures. In most patients, treatment of hypomagnesemia required magnesium replacement and discontinuation of the PPI. For patients expected to be on prolonged treatment or who take YOSPRALA with medications such as digoxin or drugs that may cause hypomagnesemia (e.g., diuretics), consider monitoring magnesium levels prior to initiation of YOSPRALA and periodically during treatment [see Adverse Reactions (6.2)].

5.15 Reduced Effect of Omeprazole with St. John's Wort or Rifampin

Drugs which induce the CYP2C19 or CYP3A4 (such as St. John's Wort or rifampin) can substantially decrease concentrations of omeprazole. Avoid concomitant use of YOSPRALA with St. John's Wort or rifampin [see Drug Interactions (7)].

5.16 Interactions with Diagnostic Investigations for Neuroendocrine Tumors

Serum chromogranin A (CgA) levels increase secondary to omeprazole-induced decreases in gastric acidity. The increased CgA level may cause false positive results in diagnostic interventions for neuroendocrine tumors. Temporarily discontinue treatment with YOSPRALA at least 14 days before assessing CgA levels and consider repeating the test if initial CgA levels are high. If serial tests are performed (e.g., for monitoring), the same commercial laboratory should be used for testing, as reference ranges between tests may vary [see Drug Interactions (7) and Clinical Pharmacology (12.2)].

5.17 Interaction with Methotrexate

Literature suggests that concomitant use of PPIs with methotrexate (primarily at high dose) may elevate and prolong serum levels of methotrexate and/or its metabolite, possibly leading to methotrexate toxicities. In high-dose methotrexate administration, a temporary withdrawal of YOSPRALA may be considered in some patients [see Drug Interactions (7)].

5.18 Premature Closure of Fetal Ductus Arteriosus

NSAIDs including aspirin, may cause premature closure of the fetal ductus arteriosus. Avoid use of NSAIDs, including YOSPRALA, in pregnant women starting at 30 weeks of gestation (third trimester). [see Use in Specific Populations (8.1)].

5.19 Abnormal Laboratory Tests

Aspirin has been associated with elevated hepatic enzymes, blood urea nitrogen and serum creatinine, hyperkalemia, proteinuria, and prolonged bleeding time.

5.20 Fundic Gland Polyps

PPI use is associated with an increased risk of fundic gland polyps that increases with long-term use, especially beyond one year. Most PPI users who developed fundic gland polyps were asymptomatic and fundic gland polyps were identified incidentally on endoscopy. Use the shortest duration of PPI therapy appropriate to the condition being treated.

8.1 Pregnancy

8.2 Lactation

8.3 Females and Males of Reproductive Potential

8.4 Pediatric Use

The safety and efficacy of YOSPRALA has not been established in pediatric patients. YOSPRALA is contraindicated in pediatric patients with suspected viral infections, with or without fever, because of the risk of Reye's syndrome with concomitant use of aspirin in certain viral illnesses [see Contraindications (4)].

8.5 Geriatric Use

Of the total number of patients who received YOSPRALA (n=900) in clinical trials, 62% were ≥65 years of age and 15% were 75 years and over. No overall differences in safety or effectiveness were observed between these subjects and younger subjects and other reported clinical experience with aspirin and omeprazole has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out [see Clinical Pharmacology (12.3)].

8.6 Renal Impairment

No dose reduction of YOSPRALA is necessary in patients with mild to moderate renal impairment. Avoid YOSPRALA in patients with severe renal impairment (glomerular filtration rate less than 10 mL/minute) due to the aspirin component [see Warnings and Precautions (5.6), Clinical Pharmacology (12.3)].

8.7 Hepatic Impairment

Long-term moderate to high doses of aspirin may result in elevations in serum ALT levels [see Warnings and Precautions (5.12)]. Systemic exposure to omeprazole is increased in patients with hepatic impairment [see Clinical Pharmacology (12.3)]. Avoid YOSPRALA in patients with any degree of hepatic impairment.

8.8 Asian Population

In studies of healthy subjects, Asians had approximately a four-fold higher exposure to omeprazole than Caucasians. CYP2C19, a polymorphic enzyme, is involved in the metabolism of omeprazole. Approximately 15% to 20% of Asians are CYP2C19 poor metabolizers. Tests are available to identify a patient's CYP2C19 genotype. Avoid use in Asian patients with unknown CYP2C19 genotype or those who are known to be poor metabolizers [see Clinical Pharmacology (12.5)].

Aspirin

Salicylate toxicity may result from acute ingestion (overdose) or chronic intoxication. The early signs of salicylic overdose (salicylism), including tinnitus (ringing in the ears), occur at plasma concentrations approaching 200 mg/mL. Plasma concentrations of aspirin above 300 mg/mL are clearly toxic. Severe toxic effects are associated with levels above 400 mg/mL. A single lethal dose of aspirin in adults is not known with certainty but death may be expected at 30 g.

Omeprazole

Reports have been received of overdosage with omeprazole in humans. Doses ranged up to 2400 mg. Manifestations were variable, but included confusion, drowsiness, blurred vision, tachycardia, nausea, vomiting, diaphoresis, flushing, headache, dry mouth, and other adverse reactions similar to those seen with recommended doses of omeprazole [see Adverse Reactions (6)]. Symptoms were transient, and no serious clinical outcome has been reported when omeprazole was taken alone. No specific antidote for omeprazole overdosage is known. Omeprazole is extensively protein bound and is, therefore, not readily dialyzable. In the event of overdosage, treatment should be symptomatic and supportive.

If overexposure to YOSPRALA occurs, call your Poison Control Center at 1-800-222-1222 for current information on the management of poisoning or overdosage.

Structural Formula

Aspirin

Omeprazole

Molecular Formula

The empirical formula of aspirin is C9H8O4.

The empirical formula of omeprazole is C17H19N3O3S.

Molecular Weight

The molecular weight of aspirin is 180.16.

The molecular weight of omeprazole is 345.4.

12.1 Mechanism of Action

Aspirin (acetylsalicylic acid) is an inhibitor of both prostaglandin synthesis and platelet aggregation. The differences in activity between aspirin and salicylic acid are thought to be due to the acetyl group on the aspirin molecule. This acetyl group is responsible for the inactivation of cyclo-oxygenase via acetylation.

Omeprazole belongs to a class of antisecretory compounds, the substituted benzimidazoles, that suppress gastric acid secretion by specific inhibition of the [H+/K+]-ATPase enzyme system at the secretory surface of the gastric parietal cell. Because this enzyme system is regarded as the acid (proton) pump within the gastric mucosa, omeprazole has been characterized as a gastric acid-pump inhibitor, in that it blocks the final step of acid production. This effect is dose-related and leads to inhibition of both basal and stimulated acid secretion irrespective of the stimulus.

12.2 Pharmacodynamics

12.3 Pharmacokinetics

12.5 Pharmacogenomics

CYP2C19, a polymorphic enzyme, is involved in the metabolism of omeprazole. The CYP2C19*1 allele is fully functional while the CYP2C19*2 and *3 alleles are nonfunctional. There are other alleles associated with no or reduced enzymatic function. Patients carrying two fully functional alleles are extensive metabolizers and those carrying two loss-of-function alleles are poor metabolizers. In extensive metabolizers, omeprazole is primarily metabolized by CYP2C19. The systemic exposure to omeprazole varies with a patient's metabolism status: poor metabolizers > intermediate metabolizers > extensive metabolizers. Approximately 3% of Caucasians and 15 to 20% of Asians are CYP2C19 poor metabolizers.

In a pharmacokinetic study of single 20 mg omeprazole dose, the AUC of omeprazole in Asian subjects was approximately four-fold of that in Caucasians [see Use in Specific Populations (8.8)].

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

Studies to evaluate the potential effects of YOSPRALA on carcinogenicity, mutagenicity, or impairment of fertility have not been conducted.

13.2 Animal Toxicology and/or Pharmacology

Aspirin Trials

YOSPRALA trials

Two randomized, multi-center, double-blind trials (Study 1 and Study 2) evaluated the omeprazole component by comparing the incidence of gastric ulcer formation in 524 patients randomized to YOSPRALA 325 mg/40 mg tablets and 525 patients randomized to EC-aspirin 325 mg. Patients were included with a cerebro- or cardiovascular diagnosis if they had been taking daily aspirin 325 mg for at least 3 months, were expected to require daily aspirin 325 mg therapy for at least 6 months and were over 55 years old. Subjects between 18 and 55 years old were also required to have a documented history of gastric or duodenal ulcer within the past 5 years. The majority of patients were male (71%) and white (90%). The majority (57%) of patients were ≥65 years of age. Approximately 11% were also on chronic NSAID therapy.

Studies 1 and 2 showed that YOSPRALA given as 325 mg/40 mg tablets once daily statistically significantly reduced the 6-month cumulative incidence of gastric ulcers compared to EC-aspirin 325 mg once daily. The results at one month, three months, and six months treatment are presented in Table 4.

In both trials, patients receiving YOSPRALA 325 mg/40 mg tablets had a statistically significantly lower 6-month cumulative incidence of gastric and/or duodenal ulcers compared to EC-aspirin 325 mg (3% vs. 12%).

Upper GI bleeding was reported as a serious adverse reaction in each treatment arm; 1 gastric ulcer hemorrhage in a subject receiving YOSPRALA and 1 duodenal ulcer hemorrhage in a subject receiving EC-aspirin alone.

Storage: Store at 25°C (77°F); excursions permitted to 15-30°C (59 to 86°F) [see USP Controlled Room Temperature]. Store in the original container with desiccant and keep the bottle tightly closed to protect from moisture. Dispense in a tight container if package is subdivided.

Coagulation Abnormalities

Advise patients to inform their health care provider if they experience any unanticipated, prolonged or excessive bleeding or bleeding time (e.g. bruising, nose bleed) [see Warnings and Precautions (5.1)].

GI Adverse Reactions

Advise patients to stop taking YOSPRALA and call their health care provider right away if they have any of the following signs or symptoms: 1) black, bloody, or tarry stools; 2) coughing up blood or vomit that looks like coffee grounds; 3) severe nausea, vomiting, or stomach pain [see Warnings and Precautions (5.2)].

Bleeding Risk with Use of Alcohol

Advise patients to avoid heavy alcohol use (three or more drinks every day) during treatment with YOSPRALA during treatment with YOSPRALA [see Warnings and Precautions (5.3)].

Drug Interactions

Advise patients to report to their healthcare provider before starting treatment with any of the following:

• Rilpivirine-containing products [see Contraindications (4)].
• Clopidogrel, ticagrelor, St. John's Wort or rifampin; or, if they take high-dose methotrexate [see Warnings and Precautions (5.4, 5.5, 5.15, 5.17)].

Renal Failure

Advise patients to report to their health care provider if they develop kidney problems (e.g. changes in urination, swelling, skin rash/itching, ammonia breath) [see Warnings and Precautions (5.6)].

Gastric Malignancy

Advise patients to return to their healthcare provider if they have gastric symptoms while taking YOSPRALA or after completing treatment [see Warnings and Precautions (5.7)].

Acute Interstitial Nephritis

Advise patients to call their healthcare provider immediately if they experience signs and/or symptoms associated with acute interstitial nephritis [see Warnings and Precautions (5.8)].

Clostridium difficile-Associated Diarrhea

Advise patients to call their health care provider immediately if they experience diarrhea that does not improve [see Warnings and Precautions (5.9)].

Bone Fracture

Advise patients to report any fractures, especially of the hip, wrist or spine, to their health care provider [see Warnings and Precautions (5.10)].

Cutaneous and Systemic Lupus Erythematosus

Advise patients to immediately call their health care provider for any new or worsening of symptoms associated with cutaneous or systemic lupus erythematosus [see Warnings and Precautions (5.11)].

Hepatic Impairment

Advise patients to report to their health care provider if they develop liver problems (e.g. skin and eyes that appear yellowish, abdominal pain and swelling, itchy skin, dark urine color) [see Warnings and Precautions (5.12)].

Cyanocobalamin (Vitamin B-12) Deficiency

Advise patients to report any clinical symptoms that may be associated with cyanocobalamin deficiency to their health care provider if they have been receiving YOSPRALA for longer than 3 years [see Warnings and Precautions (5.13)].

Hypomagnesemia

Advise patients to report any clinical symptoms that may be associated with hypomagnesemia to their health care provider, if they have been receiving YOSPRALA for at least 3 months [see Warnings and Precautions (5.14)].

Fetal Toxicity

Inform pregnant women to avoid use of YOSPRALA and other NSAIDs starting at 30 weeks gestation because of the risk of the premature closure of the fetal ductus arteriosus [see Warnings and Precautions (5.18) and Use in Specific Populations (8.1)].

Lactation

Advise women that breastfeeding is not recommended during treatment with YOSPRALA [see Use in Specific Populations (8.2)].

Infertility

Advise females of reproductive potential that NSAIDs, including YOSPRALA, may be associated with reversible infertility [see Use in Specific Populations (8.3)].

Administration [see Dosage and Administration (2.2)]

Advise patients:

• To take YOSPRALA once daily at least 60 minutes before a meal.
• The tablets are to be swallowed whole with liquid. Do not split, chew, crush or dissolve the tablet.
• If a dose is missed, administer as soon as possible. However, if the next scheduled dose is due, do not take the missed dose, and take the next dose on time. Do not take two doses at one time to make up for a missed dose, unless advised by their health care provider.
• Not to stop taking YOSPRALA suddenly as this could increase the risk of heart attack or stroke.