JENTADUETO XR tablets for oral use contain: linagliptin and metformin HCl. Linagliptin Linagliptin is an inhibitor of the dipeptidyl peptidase-4 (DPP-4) enzyme. The chemical name of linagliptin is 1H-Purine-2,6-dione, 8-[(3R)-3-amino-1-piperidinyl]-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]- The molecular formula is C 25 H 28 N 8 O 2 and the molecular weight is 472.54 g/mol. The structural formula is: Linagliptin is a white to yellowish, not or only slightly hygroscopic solid substance. It is very slightly soluble in water (0.9 mg/mL). Linagliptin is soluble in methanol (ca. 60 mg/mL), sparingly soluble in ethanol (ca. 10 mg/mL), very slightly soluble in isopropanol (<1 mg/mL), and very slightly soluble in acetone (ca. 1 mg/mL). Chemical Structure Metformin HCl Metformin HCl ( N,N -dimethylimidodicarbonimidic diamide hydrochloride) is a biguanide. Metformin HCl is a white to off-white crystalline compound with a molecular formula of C 4 H 11 N 5 ∙HCl and a molecular weight of 165.63 g/mol. Metformin HCl is freely soluble in water and is practically insoluble in acetone, ether, and chloroform. The pKa of metformin is 12.4. The pH of a 1% aqueous solution of metformin hydrochloride is 6.68. The structural formula is: JENTADUETO XR consists of an extended-release metformin core tablet that is coated with the immediate-release drug substance linagliptin. JENTADUETO XR is available for oral administration as tablets containing: 5 mg linagliptin and 1,000 mg metformin HCl (equivalent to 779.86 mg of metformin) 2.5 mg linagliptin and 1,000 mg metformin HCl (equivalent to 779.86 mg of metformin) Each coated tablet of JENTADUETO XR contains the following inactive ingredients: Tablet core: hypromellose, magnesium stearate, and polyethylene oxide. Coating: arginine, carnauba wax, ferric oxide yellow (2.5 mg/1,000 mg), ferrosoferric oxide, hydroxypropyl cellulose, hypromellose, isopropyl alcohol, polyethylene glycol, propylene glycol, talc, and titanium dioxide. Chemical Structure

JENTADUETO XR is indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus . JENTADUETO XR is a combination of linagliptin, a dipeptidyl peptidase-4 (DPP-4) inhibitor and metformin hydrochloride (HCl), a biguanide, indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus Limitations of Use Not recommended in patients with type 1 diabetes mellitus Has not been studied in patients with a history of pancreatitis Limitations of Use JENTADUETO XR is not recommended in patients with type 1 diabetes mellitus. JENTADUETO XR has not been studied in patients with a history of pancreatitis. It is unknown whether patients with a history of pancreatitis are at an increased risk for the development of pancreatitis while using JENTADUETO XR .

JENTADUETO XR tablets are a combination of linagliptin and extended-release metformin HCl available as: 5 mg/1,000 mg are white, oval-shaped coated tablets with one side printed in black ink with the Boehringer Ingelheim symbol and "D5" on the top line and "1000 M" on the bottom line

mg/1,000 mg are yellow, oval-shaped coated tablets with one side printed in black ink with the Boehringer Ingelheim symbol and "D2" on the top line and "1000 M" on the bottom line. Tablets: 5 mg linagliptin/1,000 mg metformin HCl extended-release 2.5 mg linagliptin/1,000 mg metformin HCl extended-release

Individualize the starting dosage of JENTADUETO XR based on the patient's current regimen The maximum recommended dosage is 5 mg linagliptin/2,000 mg metformin HCl once daily Take orally once daily with a meal, with gradual dose escalation to reduce the gastrointestinal effects due to metformin Swallow whole; do not split, crush, dissolve, or chew Prior to initiation, assess renal function with estimated glomerular filtration rate (eGFR) Do not use in patients with eGFR below 30 mL/min/1.73 m 2 Initiation is not recommended in patients with eGFR between 30 - 45 mL/min/1.73 m 2 Assess risk/benefit of continuing if eGFR falls below 45 mL/min/1.73 m 2 Discontinue if eGFR falls below 30 mL/min/1.73 m 2 JENTADUETO XR may need to be discontinued at time of, or prior to, iodinated contrast imaging procedures 2.1 Recommended Dosage and Administration The dosage of JENTADUETO XR should be individualized on the basis of both effectiveness and tolerability, while not exceeding the maximum recommended total daily dosage of linagliptin 5 mg and metformin hydrochloride (HCl) 2,000 mg. JENTADUETO XR should be given orally once daily with a meal. Dosage escalation should be gradual to reduce the gastrointestinal (GI) side effects associated with metformin use. Recommended starting dosage: In patients currently not treated with metformin HCl, initiate JENTADUETO XR treatment with 5 mg linagliptin/1,000 mg metformin HCl extended-release once daily with a meal. In patients already treated with metformin HCl, start JENTADUETO XR with 5 mg of linagliptin total daily dosage and a similar total daily dosage of metformin HCl once daily with a meal. In patients already treated with linagliptin and metformin HCl or JENTADUETO, switch to JENTADUETO XR containing 5 mg of linagliptin total daily dosage and a similar total daily dosage of metformin HCl once daily with a meal. JENTADUETO XR should be swallowed whole. The tablets must not be split, crushed, dissolved, or chewed. JENTADUETO XR 5 mg linagliptin/1,000 mg metformin HCl extended-release tablet should be taken as a single tablet once daily. Patients using 2.5 mg linagliptin/1,000 mg metformin HCl extended-release tablets should take two tablets together once daily

Recommended Dosing in Renal Impairment Assess renal function prior to initiation of JENTADUETO XR and periodically thereafter. JENTADUETO XR is contraindicated in patients with an estimated glomerular filtration rate (eGFR) below 30 mL/min/1.73 m 2 . Initiation of JENTADUETO XR in patients with an eGFR between 30-45 mL/min/1.73 m 2 is not recommended. In patients taking JENTADUETO XR whose eGFR later falls below 45 mL/min/1.73 m 2 , assess benefit/risk of continuing therapy. Discontinue JENTADUETO XR if the patient's eGFR later falls below 30 mL/min/1.73 m 2

Discontinuation for Iodinated Contrast Imaging Procedures Discontinue JENTADUETO XR at the time of, or prior to, an iodinated contrast imaging procedure in patients with an eGFR between 30 and 60 mL/min/1.73 m 2 ; in patients with a history of liver disease, alcoholism or heart failure; or in patients who will be administered intra-arterial iodinated contrast. Re-evaluate eGFR 48 hours after the imaging procedure; restart JENTADUETO XR if renal function is stable .

Lactic acidosis: See boxed warning Pancreatitis: There have been reports of acute pancreatitis, including fatal pancreatitis. If pancreatitis is suspected, promptly discontinue JENTADUETO XR. Hypoglycemia: Consider lowering the dosage of insulin secretagogue or insulin to reduce the risk of hypoglycemia when initiating JENTADUETO XR. Hypersensitivity reactions: Serious hypersensitivity reactions (e.g., anaphylaxis, angioedema, and exfoliative skin conditions) have occurred with JENTADUETO XR. If hypersensitivity reactions occur discontinue JENTADUETO XR, treat promptly, and monitor until signs and symptoms resolve. Vitamin B 12 deficiency: Metformin may lower vitamin B 12 levels. Measure hematologic parameters annually and vitamin B 12 at 2 to 3 year intervals and manage any abnormalities. Arthralgia: Severe and disabling arthralgia has been reported in patients taking linagliptin. Consider as a possible cause for severe joint pain and discontinue drug if appropriate. Bullous pemphigoid: There have been reports of bullous pemphigoid requiring hospitalization. Tell patients to report development of blisters or erosions. If bullous pemphigoid is suspected, discontinue JENTADUETO XR. Heart failure: Heart failure has been observed with two other members of the DPP-4 inhibitor class. Consider risks and benefits of JENTADUETO XR in patients who have known risk factors for heart failure. Monitor for signs and symptoms. 5.1 Lactic Acidosis Metformin There have been postmarketing cases of metformin-associated lactic acidosis, including fatal cases. These cases had a subtle onset and were accompanied by nonspecific symptoms such as malaise, myalgias, abdominal pain, respiratory distress, or increased somnolence; however, hypothermia, hypotension and resistant bradyarrhythmias have occurred with severe acidosis. Metformin-associated lactic acidosis was characterized by elevated blood lactate concentrations (>5 mmol/Liter), anion gap acidosis (without evidence of ketonuria or ketonemia), and an increased lactate:pyruvate ratio; metformin plasma levels generally >5 mcg/mL. Metformin decreases liver uptake of lactate increasing lactate blood levels which may increase risk of lactic acidosis, especially in patients at risk. If metformin-associated lactic acidosis is suspected, general supportive measures should be instituted promptly in a hospital setting, along with immediate discontinuation of JENTADUETO XR. In JENTADUETO XR-treated patients with a diagnosis or strong suspicion of lactic acidosis, prompt hemodialysis is recommended to correct the acidosis and remove accumulated metformin (metformin is dialyzable, with clearance of up to 170 mL/min under good hemodynamic conditions). Hemodialysis has often resulted in reversal of symptoms and recovery . Educate patients and their families about the symptoms of lactic acidosis and if these symptoms occur instruct them to discontinue JENTADUETO XR and report these symptoms to their healthcare provider. For each of the known and possible risk factors for metformin-associated lactic acidosis, recommendations to reduce the risk of and manage metformin-associated lactic acidosis are provided below: Renal Impairment: The postmarketing metformin-associated lactic acidosis cases primarily occurred in patients with significant renal impairment. The risk of metformin accumulation and metformin-associated lactic acidosis increases with the severity of renal impairment because metformin is substantially excreted by the kidney. Clinical recommendations based upon the patient's renal function include : Before initiating JENTADUETO XR, obtain an estimated glomerular filtration rate (eGFR). JENTADUETO XR is contraindicated in patients with an eGFR less than 30 mL/min/1.73 m 2 . Initiation of JENTADUETO XR is not recommended in patients with eGFR between 30 – 45 mL/min/1.73 m 2 . Obtain an eGFR at least annually in all patients taking JENTADUETO XR. In patients at increased risk for the development of renal impairment (e.g., the elderly), renal function should be assessed more frequently. In patients taking JENTADUETO XR whose eGFR later falls below 45 mL/min/1.73 m 2 , assess the benefit and risk of continuing therapy. Drug Interactions: The concomitant use of JENTADUETO XR with specific drugs may increase the risk of metformin-associated lactic acidosis: those that impair renal function, result in significant hemodynamic change, interfere with acid-base balance or increase metformin accumulation . Therefore, consider more frequent monitoring of patients. Age 65 or Greater: The risk of metformin-associated lactic acidosis increases with the patient's age because elderly patients have a greater likelihood of having hepatic, renal, or cardiac impairment than younger patients. Assess renal function more frequently in elderly patients . Radiological Studies with Contrast: Administration of intravascular iodinated contrast agents in metformin-treated patients has led to an acute decrease in renal function and the occurrence of lactic acidosis. Stop JENTADUETO XR at the time of, or prior to, an iodinated contrast imaging procedure in patients with an eGFR between 30 and 60 mL/min/1.73 m 2 ; in patients with a history of hepatic impairment, alcoholism, or heart failure; or in patients who will be administered intra-arterial iodinated contrast. Re-evaluate eGFR 48 hours after the imaging procedure, and restart JENTADUETO XR if renal function is stable. Surgery and Other Procedures: Withholding of food and fluids during surgical or other procedures may increase the risk for volume depletion, hypotension and renal impairment. JENTADUETO XR should be temporarily discontinued while patients have restricted food and fluid intake. Hypoxic States: Several of the postmarketing cases of metformin-associated lactic acidosis occurred in the setting of acute congestive heart failure (particularly when accompanied by hypoperfusion and hypoxemia). Cardiovascular collapse (shock), acute myocardial infarction, sepsis, and other conditions associated with hypoxemia have been associated with lactic acidosis and may also cause prerenal azotemia. When such events occur, discontinue JENTADUETO XR. Excessive Alcohol Intake: Alcohol potentiates the effect of metformin on lactate metabolism and this may increase the risk of metformin-associated lactic acidosis. Warn patients against excessive alcohol intake while receiving JENTADUETO XR. Hepatic Impairment: Patients with hepatic impairment have developed cases of metformin-associated lactic acidosis. This may be due to impaired lactate clearance resulting in higher lactate blood levels. Therefore, avoid use of JENTADUETO XR in patients with clinical or laboratory evidence of hepatic disease

Pancreatitis Acute pancreatitis, including fatal pancreatitis, has been reported in patients treated with linagliptin. In the CARMELINA trial , acute pancreatitis was reported in 9 (0.3%) patients treated with linagliptin and in 5 (0.1%) patients treated with placebo. Two patients treated with linagliptin in the CARMELINA trial had acute pancreatitis with a fatal outcome. There have been postmarketing reports of acute pancreatitis, including fatal pancreatitis, in patients treated with linagliptin. Take careful notice of potential signs and symptoms of pancreatitis. If pancreatitis is suspected, promptly discontinue JENTADUETO XR and initiate appropriate management. It is unknown whether patients with a history of pancreatitis are at increased risk for the development of pancreatitis while using JENTADUETO XR

Hypoglycemia with Concomitant Use with Insulin and Insulin Secretagogues Insulin secretagogues and insulin are known to cause hypoglycemia. The risk of hypoglycemia is increased when JENTADUETO XR is used in combination with an insulin secretagogue (e.g., sulfonylurea) or insulin . Therefore, a lower dosage of the insulin secretagogue or insulin may be required to reduce the risk of hypoglycemia when used in combination with JENTADUETO XR

Hypersensitivity Reactions There have been postmarketing reports of serious hypersensitivity reactions in patients treated with linagliptin. These reactions include anaphylaxis, angioedema, and exfoliative skin conditions. Onset of these reactions occurred predominantly within the first 3 months after initiation of treatment with linagliptin, with some reports occurring after the first dose. If a serious hypersensitivity reaction is suspected, discontinue JENTADUETO XR, assess for other potential causes for the event, and institute alternative treatment for diabetes mellitus. Angioedema has also been reported with other dipeptidyl peptidase-4 (DPP-4) inhibitors. Use caution in a patient with a history of angioedema to another DPP-4 inhibitor because it is unknown whether such patients will be predisposed to angioedema with JENTADUETO XR

Vitamin B 12 Deficiency In metformin clinical trials of 29-week duration, a decrease to subnormal levels of previously normal serum vitamin B 12 levels was observed in approximately 7% of metformin-treated patients. Such decrease, possibly due to interference with B 12 absorption from the B 12 -intrinsic factor complex, may be associated with anemia but appears to be rapidly reversible with discontinuation of metformin or vitamin B 12 supplementation. Certain individuals (those with inadequate vitamin B 12 or calcium intake or absorption) appear to be predisposed to developing subnormal vitamin B 12 levels. Measure hematologic parameters on an annual basis and vitamin B 12 at 2 to 3 year intervals in patients on JENTADUETO XR and manage any abnormalities

Severe and Disabling Arthralgia There have been postmarketing reports of severe and disabling arthralgia in patients taking linagliptin. The time to onset of symptoms following initiation of drug therapy varied from one day to years. Patients experienced relief of symptoms upon discontinuation of the medication. A subset of patients experienced a recurrence of symptoms when restarting the same drug or a different DPP-4 inhibitor. Consider DPP-4 inhibitors as a possible cause for severe joint pain and discontinue drug if appropriate

Bullous Pemphigoid Bullous pemphigoid was reported in 7 (0.2%) patients treated with linagliptin compared to none in patients treated with placebo in the CARMELINA trial , and 3 of these patients were hospitalized due to bullous pemphigoid. Postmarketing cases of bullous pemphigoid requiring hospitalization have been reported with DPP-4 inhibitor use. In reported cases, patients typically recovered with topical or systemic immunosuppressive treatment and discontinuation of the DPP-4 inhibitor. Tell patients to report development of blisters or erosions while receiving JENTADUETO XR. If bullous pemphigoid is suspected, JENTADUETO XR should be discontinued and referral to a dermatologist should be considered for diagnosis and appropriate treatment

Heart Failure An association between DPP-4 inhibitor treatment and heart failure has been observed in cardiovascular outcomes trials for two other members of the DPP-4 inhibitor class. These trials evaluated patients with type 2 diabetes mellitus and atherosclerotic cardiovascular disease. Consider the risks and benefits of JENTADUETO XR prior to initiating treatment in patients at risk for heart failure, such as those with a prior history of heart failure and a history of renal impairment, and observe these patients for signs and symptoms of heart failure during therapy. Advise patients of the characteristic symptoms of heart failure and to immediately report such symptoms. If heart failure develops, evaluate and manage according to current standards of care and consider discontinuation of JENTADUETO XR.

Table 2 describes clinically relevant interactions with JENTADUETO XR. Table 2 Clinically Relevant Interactions with JENTADUETO XR Carbonic Anhydrase Inhibitors Clinical Impact Topiramate or other carbonic anhydrase inhibitors (e.g., zonisamide, acetazolamide or dichlorphenamide) frequently cause a decrease in serum bicarbonate and induce non-anion gap, hyperchloremic metabolic acidosis. Concomitant use of these drugs with JENTADUETO XR may increase the risk of lactic acidosis. Intervention Consider more frequent monitoring of these patients. Drugs that Reduce Metformin Clearance Clinical Impact Concomitant use of drugs that interfere with common renal tubular transport systems involved in the renal elimination of metformin (e.g., organic cationic transporter-2 [OCT2] / multidrug and toxin extrusion [MATE] inhibitors such as ranolazine, vandetanib, dolutegravir, and cimetidine) could increase systemic exposure to metformin and may increase the risk for lactic acidosis . Intervention Consider the benefits and risks of concomitant use. Alcohol Clinical Impact Alcohol is known to potentiate the effect of metformin on lactate metabolism. Intervention Warn patients against excessive alcohol intake while receiving JENTADUETO XR. Insulin or Insulin Secretagogues Clinical Impact The risk of hypoglycemia is increased when JENTADUETO XR is used in combination with an insulin secretagogue (e.g., sulfonylurea) or insulin. Intervention Coadministration of JENTADUETO XR with an insulin secretagogue (e.g., sulfonylurea) or insulin may require lower dosages of the insulin secretagogue or insulin to reduce the risk of hypoglycemia. Drugs Affecting Glycemic Control Clinical Impact Certain drugs tend to produce hyperglycemia and may lead to loss of glycemic control. These drugs include the thiazides and other diuretics, corticosteroids, phenothiazines, thyroid products, estrogens, oral contraceptives, phenytoin, nicotinic acid, sympathomimetics, calcium channel blocking drugs, and isoniazid. Intervention When such drugs are administered to a patient receiving JENTADUETO XR, the patient should be closely observed to maintain adequate glycemic control. When such drugs are withdrawn from a patient receiving JENTADUETO XR, the patient should be observed closely for hypoglycemia. Inducers of P-glycoprotein or CYP3A4 Enzymes Clinical Impact Rifampin decreased linagliptin exposure, suggesting that the efficacy of linagliptin may be reduced when administered in combination with a strong P-gp or CYP3A4 inducer. Intervention Use of alternative treatments is strongly recommended when linagliptin is to be administered with a strong P-gp or CYP3A4 inducer. Carbonic Anhydrase Inhibitors: May increase risk of lactic acidosis. Consider more frequent monitoring. Drugs that Reduce Metformin Clearance: May increase risk of lactic acidosis. Consider benefits and risks of concomitant use. Alcohol: Can potentiate the effect of metformin on lactate metabolism. Warn patients against excessive alcohol intake. Strong P-glycoprotein/CYP3A4 Inducer: Efficacy may be reduced when administered in combination (e.g., rifampin). Use of alternative treatments is strongly recommended.