Sitagliptin and Metformin
Medically reviewed by Drugs.com. Last updated on Jul 19, 2020.
(sit a GLIP tin & met FOR min)
- Metformin and Sitagliptin
- Sitagliptin Phos/Metformin HCl
- Sitagliptin Phosphate and Metformin Hydrochloride
Excipient information presented when available (limited, particularly for generics); consult specific product labeling.
Janumet 50/500: Sitagliptin 50 mg and metformin hydrochloride 500 mg
Janumet 50/1000: Sitagliptin 50 mg and metformin hydrochloride 1000 mg
Tablet, extended release, oral:
Janumet XR: 50/500: Sitagliptin 50 mg [immediate release] and metformin hydrochloride 500 mg [extended release]
Janumet XR: 50/1000: Sitagliptin 50 mg [immediate release] and metformin hydrochloride 1000 mg [extended release]
Janumet XR: 100/1000: Sitagliptin 100 mg [immediate release] and metformin hydrochloride 1000 mg [extended release]
Brand Names: U.S.
- Janumet XR
- Antidiabetic Agent, Biguanide
- Antidiabetic Agent, Dipeptidyl Peptidase 4 (DPP-4) Inhibitor
Sitagliptin inhibits dipeptidyl peptidase IV (DPP-IV) enzymes resulting in prolonged active incretin levels. Incretin hormones [eg, glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP)] regulate glucose homeostasis by increasing insulin synthesis and release from pancreatic beta cells and decreasing glucagon secretion from pancreatic alpha cells. Decreased glucagon secretion results in decreased hepatic glucose production. Under normal physiologic circumstances, incretin hormones are released by the intestine throughout the day and levels are increased in response to a meal; incretin hormones are rapidly inactivated by DPP-IV enzymes.
Metformin decreases hepatic glucose production, decreasing intestinal absorption of glucose, and improves insulin sensitivity (increases peripheral glucose uptake and utilization).
Use: Labeled Indications
Diabetes mellitus, type 2, treatment: Adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus.
Hypersensitivity to sitagliptin, metformin, or any component of the formulation; severe renal impairment (estimated glomerular filtration rate [eGFR] <30 mL/minute/1.73 m2); acute or chronic metabolic acidosis including diabetic ketoacidosis.
Canadian labeling: Additional contraindications (not in the US labeling): Renal function unknown; unstable and/or type 1 diabetes mellitus; history of ketoacidosis (with or without coma); history of lactic acidosis, regardless of precipitating factors; acute or chronic excessive alcohol intake; severe hepatic disease; cardiovascular collapse and disease states associated with hypoxemia (eg, cardiorespiratory insufficiency) which are often associated with hyperlactacidemia; use during stress conditions (eg, severe infection, trauma, surgery) and the recovery phase thereafter; severe dehydration or shock; breastfeeding; pregnancy; during the period around administration of iodinated contrast materials
Note: Due to lack of additive glycemic benefit, use of sitagliptin in combination with a glucagon-like peptide-1 (GLP-1) receptor agonist should be avoided (ADA/EASD [Davies 2018]). May require a dose reduction of insulin and/or insulin secretagogues to avoid hypoglycemia.
Diabetes mellitus, type 2, treatment:
Note: Additional therapeutic considerations may apply; refer to individual agents for information.
Oral: Initial doses should be based on the current dose of sitagliptin and metformin; titrate gradually per glycemic response. Total daily dose should be administered in 2 equally divided doses (immediate-release tablets) or once daily (extended-release tablets). Maximum dose: Sitagliptin 100 mg/metformin 2 g per day.
Patients already on metformin: Initial: Sitagliptin 100 mg/day plus current daily dose of metformin. Patients currently on metformin 1.7 g/day (eg, 850 mg twice daily) may receive an initial dose of sitagliptin 100 mg/metformin 2 g per day.
Patients not on metformin: Initial: Sitagliptin 100 mg/metformin 1 g per day.
Conversion from immediate release to extended release: Convert using same total daily dose (up to the maximum recommended dose), but adjust frequency as indicated for immediate (twice daily) or extended (once daily) release products.
Refer to adult dosing. The initial and maintenance dosing should be conservative, due to the potential for decreased renal function (monitor).
Oral: Administer with meals, at the same time each day (preferably with the evening meal for ER tablets). Swallow ER tablets whole; do not split, crush, or chew; do not split or divide IR tablets.
Bariatric surgery: Tablet, extended release: Some institutions may have specific protocols that conflict with these recommendations; refer to institutional protocols as appropriate. If safety and efficacy can be effectively monitored, no change in formulation or administration is required after bariatric surgery; however, consider switching to IR versions of the individual sitagliptin and metformin components to facilitate expected dose decrease or discontinuation requirement after bariatric surgery.
Should be taken with meals (to decrease GI upset). Take at the same time each day. Individualized medical nutrition therapy (MNT) based on ADA recommendations is an integral part of therapy. Monitor for signs and symptoms of vitamin B12 and/or folic acid deficiency; supplementation may be required.
Store at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F).
Abemaciclib: May increase the serum concentration of MetFORMIN. Monitor therapy
Alcohol (Ethyl): May enhance the adverse/toxic effect of MetFORMIN. Specifically, alcohol may potentiate the risk of lactic acidosis Avoid combination
Alpha-Lipoic Acid: May enhance the hypoglycemic effect of Antidiabetic Agents. Monitor therapy
Androgens: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Exceptions: Danazol. Monitor therapy
Bictegravir: May increase the serum concentration of MetFORMIN. Monitor therapy
Carbonic Anhydrase Inhibitors: May enhance the adverse/toxic effect of MetFORMIN. Specifically, the risk of developing lactic acidosis may be increased. Exceptions: Brinzolamide; Dorzolamide. Monitor therapy
Cephalexin: May increase the serum concentration of MetFORMIN. Monitor therapy
Cimetidine: May increase the serum concentration of MetFORMIN. Management: Consider alternatives to cimetidine in patients receiving metformin due to a potential for increased metformin concentrations and toxicity (including lactic acidosis). Consider therapy modification
Dalfampridine: MetFORMIN may increase the serum concentration of Dalfampridine. Dalfampridine may increase the serum concentration of MetFORMIN. Monitor therapy
Digoxin: SITagliptin may increase the serum concentration of Digoxin. Monitor therapy
Direct Acting Antiviral Agents (HCV): May enhance the hypoglycemic effect of Antidiabetic Agents. Monitor therapy
Dofetilide: MetFORMIN may increase the serum concentration of Dofetilide. Monitor therapy
Dolutegravir: May increase the serum concentration of MetFORMIN. Management: Consider alternatives to this combination or use of lower metformin doses. Carefully weigh the risk of metformin toxicities (including lactic acidosis) against the benefit of combining dolutegravir with metformin. Consider therapy modification
Erdafitinib: May increase the serum concentration of OCT2 Substrates. Monitor therapy
Glycopyrrolate (Systemic): May increase the serum concentration of MetFORMIN. Monitor therapy
Guanethidine: May enhance the hypoglycemic effect of Antidiabetic Agents. Monitor therapy
Hyperglycemia-Associated Agents: May diminish the therapeutic effect of Antidiabetic Agents. Monitor therapy
Hypoglycemia-Associated Agents: Antidiabetic Agents may enhance the hypoglycemic effect of Hypoglycemia-Associated Agents. Monitor therapy
Insulins: Dipeptidyl Peptidase-IV Inhibitors may enhance the hypoglycemic effect of Insulins. Management: Consider a decrease in insulin dose when initiating therapy with a dipeptidyl peptidase-IV inhibitor and monitor patients for hypoglycemia. Consider therapy modification
Iodinated Contrast Agents: May enhance the adverse/toxic effect of MetFORMIN. Renal dysfunction that may be caused by iodinated contrast agents may lead to metformin-associated lactic acidosis. Management: Management advice varies. Refer to the full drug interaction monograph content for details. Exceptions: Diatrizoate Meglumine; Diatrizoate Sodium; Ethiodized Oil. Consider therapy modification
Isavuconazonium Sulfate: May increase the serum concentration of MetFORMIN. Monitor therapy
LamoTRIgine: May increase the serum concentration of MetFORMIN. Management: The lamotrigine Canadian product monograph states that coadministration of these drugs is not recommended. Monitor therapy
Maitake: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Monitor therapy
Monoamine Oxidase Inhibitors: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Monitor therapy
Nonsteroidal Anti-Inflammatory Agents: May enhance the adverse/toxic effect of MetFORMIN. Monitor therapy
Ombitasvir, Paritaprevir, and Ritonavir: May enhance the adverse/toxic effect of MetFORMIN. Specifically, the risk for lactic acidosis may be increased. Monitor therapy
Ombitasvir, Paritaprevir, Ritonavir, and Dasabuvir: May enhance the adverse/toxic effect of MetFORMIN. Specifically, the risk for lactic acidosis may be increased. Monitor therapy
Ondansetron: May increase the serum concentration of MetFORMIN. Monitor therapy
Patiromer: May decrease the serum concentration of MetFORMIN. Management: Administer metformin at least 3 hours before or 3 hours after patiromer. Consider therapy modification
Pegvisomant: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Monitor therapy
Prothionamide: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Monitor therapy
Quinolones: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Quinolones may diminish the therapeutic effect of Agents with Blood Glucose Lowering Effects. Specifically, if an agent is being used to treat diabetes, loss of blood sugar control may occur with quinolone use. Monitor therapy
Ranolazine: May increase the serum concentration of MetFORMIN. Management: Limit the metformin dose to a maximum of 1,700 mg per day when used together with ranolazine 1,000 mg twice daily. Monitor patients for metformin toxicities, including lactic acidosis and carefully weigh the risks and benefits of this combination. Consider therapy modification
Risdiplam: May increase the serum concentration of MATE1 Substrates. Management: Avoid use of risdiplam with MATE substrates if possible. If the combination cannot be avoided, monitor closely for adverse effects. Consider a reduced dose of the MATE substrate according to that substrate's labeling if appropriate. Consider therapy modification
Ritodrine: May diminish the therapeutic effect of Antidiabetic Agents. Monitor therapy
Salicylates: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Monitor therapy
Selective Serotonin Reuptake Inhibitors: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Monitor therapy
Sulfonylureas: Dipeptidyl Peptidase-IV Inhibitors may enhance the hypoglycemic effect of Sulfonylureas. Management: Consider a decrease in sulfonylurea dose when initiating therapy with a dipeptidyl peptidase-IV inhibitor and monitor patients for hypoglycemia. Consider therapy modification
Tafenoquine: May increase the serum concentration of MATE1 Substrates. Management: Avoid use of MATE substrates with tafenoquine, and if the combination cannot be avoided, monitor closely for evidence of toxicity of the MATE substrate and consider a reduced dose of the MATE substrate according to that substrate's labeling. Consider therapy modification
Tafenoquine: May increase the serum concentration of OCT2 Substrates. Management: Avoid use of OCT2 substrates with tafenoquine, and if the combination cannot be avoided, monitor closely for evidence of toxicity of the OCT2 substrate and consider a reduced dose of the OCT2 substrate according to that substrate's labeling. Consider therapy modification
Thiazide and Thiazide-Like Diuretics: May diminish the therapeutic effect of Antidiabetic Agents. Monitor therapy
Topiramate: May enhance the adverse/toxic effect of MetFORMIN. Monitor therapy
Trimethoprim: May increase the serum concentration of MetFORMIN. Monitor therapy
Trospium: MetFORMIN may decrease the serum concentration of Trospium. Monitor therapy
Vandetanib: May increase the serum concentration of MetFORMIN. Monitor therapy
Verapamil: May diminish the therapeutic effect of MetFORMIN. Monitor therapy
Vitamin K Antagonists (eg, warfarin): MetFORMIN may diminish the anticoagulant effect of Vitamin K Antagonists. Vitamin K Antagonists may enhance the hypoglycemic effect of MetFORMIN. Monitor therapy
Also see individual agents.
1% to 10%:
Central nervous system: Headache (6%)
Gastrointestinal: Diarrhea (8%), nausea (5%), abdominal pain (3%), vomiting (2%)
Respiratory: Upper respiratory tract infection (6%)
<1%, postmarketing and/or case reports: Arthralgia, back pain, constipation, hypersensitivity reaction (including anaphylaxis, angioedema, skin rash, urticaria, hypersensitivity angiitis, exfoliative skin conditions [including Stevens-Johnson syndrome]), increased liver enzymes, lactic acidosis, limb pain, myalgia, oral mucosa ulcer, pancreatitis (including hemorrhagic or necrotizing), pemphigoid, pruritus, renal failure, renal insufficiency, severe arthralgia (FDA Safety Alert, Aug 28, 2015), stomatitis
ALERT: U.S. Boxed WarningLactic acidosis:
Postmarketing cases of metformin-associated lactic acidosis have resulted in death, hypothermia, hypotension, and resistant bradyarrhythmias. The onset of metformin-associated lactic acidosis is often subtle, accompanied only by nonspecific symptoms such as malaise, myalgias, respiratory distress, somnolence, and abdominal pain. Metformin-associated lactic acidosis was characterized by elevated blood lactate levels (>5 mmol/L), anion gap acidosis (without evidence of ketonuria or ketonemia), an increased lactate/pyruvate ratio, and metformin plasma levels generally >5 mcg/mL.
Risk factors for metformin-associated lactic acidosis include renal impairment, concomitant use of certain drugs (eg, carbonic anhydrase inhibitors such as topiramate), age ≥65 years, having a radiological study with contrast, surgery and other procedures, hypoxic states (eg, acute congestive heart failure), excessive alcohol intake, and hepatic impairment.
Steps to reduce the risk of and manage metformin-associated lactic acidosis in these high risk groups are provided in the full prescribing information.
If metformin-associated lactic acidosis is suspected, immediately discontinue sitagliptin/metformin and institute general supportive measures in a hospital setting. Prompt hemodialysis is recommended.
Concerns related to adverse effects:
• Arthralgia: Severe and disabling arthralgia has been reported with DPP-IV inhibitor use; onset may occur within one day to years after treatment initiation and may resolve with discontinuation of therapy. Some patients may experience a recurrence of symptoms if DPP-IV inhibitor therapy resumed.
• Bullous pemphigoid: DPP-4 inhibitor use has been associated with development of bullous pemphigoid; cases have typically resolved with topical or systemic immunosuppressive therapy and discontinuation of DPP-4 inhibitor therapy. Advise patients to report development of blisters or erosions. Discontinue therapy if bullous pemphigoid is suspected and consider referral to a dermatologist.
• Hypersensitivity reactions: Rare hypersensitivity reactions (including anaphylaxis, angioedema and/or severe dermatologic reactions, such as Stevens-Johnson syndrome) have been reported in postmarketing surveillance; discontinue if signs/symptoms of hypersensitivity reactions occur. Events have generally been noted within the first 3 months of therapy, and may occur with the initial dose. Use with caution if patient has experienced angioedema with other DPP-IV inhibitor use.
• Lactic acidosis: [US Boxed Warning]: Postmarketing cases of metformin-associated lactic acidosis have resulted in death, hypothermia, hypotension, and resistant bradyarrhythmias. The onset is often subtle, accompanied by nonspecific symptoms (eg, malaise, myalgias, respiratory distress, somnolence, abdominal pain); elevated blood lactate levels (>5 mmol/L); anion gap acidosis (without evidence of ketonuria or ketonemia); increased lactate:pyruvate ratio; metformin plasma levels generally >5 mcg/mL. Risk factors for lactic acidosis include patients with renal impairment, concomitant use of certain drugs (eg, carbonic anhydrase inhibitors such as topiramate), ≥65 years of age, having a radiologic study with contrast, surgery and other procedures, hypoxic states (eg, acute heart failure), excessive alcohol intake, and hepatic impairment. Discontinue immediately if acidosis is suspected; prompt hemodialysis is recommended. Lactic acidosis should be suspected in any patient with diabetes receiving metformin with evidence of acidosis but without evidence of ketoacidosis. Discontinue metformin in patients with conditions associated with dehydration, hypoperfusion, sepsis, or hypoxemia. Temporarily discontinue therapy in patients with restricted food and fluid intake. The risk of accumulation and lactic acidosis increases with the degree of impairment of renal function.
• Pancreatitis: Cases of acute pancreatitis (including hemorrhagic and necrotizing with some fatalities) have been reported with use. Monitor for signs/symptoms of pancreatitis; discontinue use immediately if pancreatitis is suspected and initiate appropriate management. Use with caution in patients with a history of pancreatitis as it is not known if this population is at greater risk.
• Renal effects: Worsening renal function, including acute renal failure, sometimes requiring dialysis has been reported with sitagliptin.
• Vitamin B12 concentrations: Long-term metformin use is associated with vitamin B12 deficiency; monitor vitamin B12 serum concentrations periodically with long-term therapy. Monitoring of B12 serum concentrations should be considered in all patients receiving metformin and in particular those with peripheral neuropathy or anemia (ADA 2020).
• Bariatric surgery:
– Altered absorption: Use individual components of the formulation as IR tablets or solution after surgery. Absorption may be altered given the anatomic and transit changes created by gastric bypass and sleeve gastrectomy surgery. ER tablets may have a reduced effect after gastric bypass or sleeve gastrectomy due to the direct bypass of the stomach and proximal small bowel with gastric bypass or a more rapid gastric emptying and proximal small bowel transit with sleeve gastrectomy (Mechanick 2013; Melissas 2013). After gastric bypass (Roux-en-Y gastric bypass [RYGB]), administration of IR tablets led to increased absorption (AUC0-∞ increased by 21%) and bioavailability (increased by 50%) (Padwal 2011). Lactate levels decrease after gastric bypass (RYGB)-induced weight loss irrespective of the use of metformin. Routinely lowering metformin dose after gastric bypass is not necessary as long as normal renal function is preserved (Deden 2018).
– Glucagon-like peptide-1 exposure and therapeutic efficacy: Closely monitor for signs and symptoms of pancreatitis; gastric bypass and sleeve gastrectomy may increase endogenous secretion of glucagon-like peptide-1 (Korner 2009; Peterli 2012). A single-dose, placebo-controlled study evaluated short-term therapy (4 weeks) with sitagliptin in gastric bypass patients having persistent or recurrent type 2 diabetes and found it to be well tolerated and provided a small but significant reduction in postprandial blood glucose (Shah 2018).
• Cardiovascular disease: Metformin may be used in patients with stable heart failure; avoid use in unstable or hospitalized patients with heart failure (ADA 2020). The risk of lactic acidosis may be increased secondary to hypoperfusion. Use of metformin in patients with heart failure may be associated with reduced mortality and reduction in hospital readmission for heart failure (Crowley 2017; Eurich 2013). In cardiovascular outcome trials of patients with type 2 diabetes and atherosclerotic cardiovascular disease, treatment with other DPP-4 inhibitors has been associated with heart failure. In a scientific statement from the American Heart Association, sitagliptin and metformin have been determined to be agents that may exacerbate underlying myocardial dysfunction (magnitude: major) (AHA [Page 2016]). However, in one large randomized, double-blinded trial in patients with type 2 diabetes and established cardiovascular disease (history of major CAD, ischemic cerebrovascular disease, or atherosclerotic peripheral arterial disease), the occurrence of the primary composite cardiovascular outcome (cardiovascular death, nonfatal myocardial infarction, nonfatal stroke, or hospitalization for unstable angina) with sitagliptin was found to be noninferior to placebo. In addition, the rate of hospitalization for heart failure did not differ between the two groups (Green 2015; McGuire 2016). The ADA suggests DPP-4 inhibitors (except saxagliptin) may be considered in patients with heart failure (ADA 2020).
• Hepatic impairment: The manufacturer recommends to generally avoid metformin use in patients with hepatic impairment due to potential for lactic acidosis. However, continued use of metformin in patients with diabetes with liver dysfunction, including cirrhosis, may be associated with a survival benefit in carefully selected patients (Brackett 2010; Crowley 2017; Zhang 2014).
• Renal impairment: Metformin and sitagliptin are substantially excreted by the kidney; assess renal function prior to initiation of therapy and periodically thereafter using eGFR. The risk of metformin accumulation and lactic acidosis increases with degree of renal impairment. Use is contraindicated in patients with eGFR <30 mL/minute/1.73 m2. Assess benefits/risks of metformin use in patients with eGFR 30 to 45 mL/minute/1.73 m2; if used, dosage reduction is recommended (ADA [Lipska 2011]; Inzucchi 2014; McCulloch 2017). Sitagliptin dosage reduction is also required. Use of concomitant medications that may affect renal function (ie, affect tubular secretion) may also affect metformin disposition. Metformin should be withheld in patients with dehydration and/or prerenal azotemia.
• Stress-related states: It may be necessary to discontinue metformin and administer insulin if the patient is exposed to stress (fever, trauma, infection, surgery).
Concurrent drug therapy issues:
• Drug-drug interactions: Potentially significant interactions may exist, requiring dose or frequency adjustment, additional monitoring, and/or selection of alternative therapy. Consult drug interactions database for more detailed information.
Dosage forms specific issues:
• Extended release tablet: Incompletely dissolved tablets passed in stool have been reported; assess the adequacy of glycemic control in patients who repeatedly observe tablets in their stool.
• Elderly: Use with caution; risk of metformin associated lactic acidosis increases with age.
• Appropriate use: Not indicated for use in patients with type 1 diabetes mellitus or in patients with diabetic ketoacidosis.
• Ethanol use: Instruct patients to avoid excessive acute or chronic ethanol use; ethanol may potentiate metformin's effect on lactate metabolism.
• Iodinated contrast: According to the manufacturer, it is recommended to temporarily discontinue metformin at the time of or before iodinated contrast imaging procedures in patients with an eGFR 30 to 60 mL/minute/1.73 m2; or with a history of hepatic disease, alcoholism, or heart failure; or in patients who will receive intra-arterial iodinated contrast. Reevaluate eGFR 48 hours after imaging procedure; restart if renal function is stable. Alternatively, the American College of Radiology (ACR) guidelines recommend that metformin may be used prior to or following administration of iodinated contrast media in patients with no evidence of acute kidney injury (AKI) and with an eGFR ≥30 mL/minute/1.73 m2; ACR guidelines recommend temporary discontinuation of metformin in patients with known AKI or severe chronic kidney disease (stage IV or V [ie, eGFR <30 mL/minute/1.73 m2]) or who are undergoing arterial catheter studies (ACR 2017).
• Patient education: Diabetes self-management education is essential to maximize the effectiveness of therapy.
• Surgical procedures: Metformin-containing products should be withheld the day of surgery; restart after renal function is stable (ADA 2020).
HbA1c (at least twice yearly in patients who have stable glycemic control and are meeting treatment goals; quarterly in patients not meeting treatment goals or with therapy change [ADA 2020]), plasma glucose, hematologic parameters (eg, hemoglobin/hematocrit, red blood cell indices) at least annually; hepatic function, renal function (eGFR) should be performed prior to initiation of therapy and at least annually (more often in patients at risk of developing renal impairment; every 3 to 6 months if eGFR 45 to <60 mL/minute/1.73 m2; every 3 months if eGFR 30 to <45 mL/minute/1.73 m2 [Lipska 2011]); vitamin B12 serum concentrations every 2 to 3 years; folate (if megaloblastic anemia is suspected); signs/symptoms of pancreatitis and/or heart failure
Metformin crosses the placenta (ADA 2020). See individual monographs for additional information.
Health professionals are encouraged to report any prenatal exposure to sitagliptin/metformin combination by contacting Merck’s pregnancy registry (1-800-986-8999).
What is this drug used for?
• It is used to lower blood sugar in patients with high blood sugar (diabetes).
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
• Abdominal pain
• Passing gas
• Loss of strength and energy
• Common cold symptoms
• Stuffy nose
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
• Heart problems like cough or shortness of breath that is new or worse, swelling of the ankles or legs, abnormal heartbeat, weight gain of more than five pounds in 24 hours, dizziness, or passing out.
• Kidney problems like unable to pass urine, blood in the urine, change in amount of urine passed, or weight gain.
• Lactic acidosis like fast breathing, fast heartbeat, abnormal heartbeat, vomiting, fatigue, shortness of breath, severe loss of strength and energy, severe dizziness, feeling cold, or muscle pain or cramps.
• Low blood sugar like dizziness, headache, fatigue, feeling weak, shaking, a fast heartbeat, confusion, hunger, or sweating.
• Pancreas problem like pancreatitis; severe abdominal pain, severe back pain, severe nausea, vomiting.
• Stevens-Johnson syndrome/toxic epidermal necrolysis like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in mouth, throat, nose, or eyes.
• Skin blisters
• Skin breakdown
• Severe joint pain
• Persistent joint pain
• Tablet shell in stool
• Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
Note: This is not a comprehensive list of all side effects. Talk to your doctor if you have questions.
Consumer Information Use and Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a limited summary of general information about the medicine's uses from the patient education leaflet and is not intended to be comprehensive. This limited summary does NOT include all information available about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not intended to provide medical advice, diagnosis or treatment and does not replace information you receive from the healthcare provider. For a more detailed summary of information about the risks and benefits of using this medicine, please speak with your healthcare provider and review the entire patient education leaflet.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
More about metformin / sitagliptin
- Side Effects
- During Pregnancy
- Dosage Information
- Drug Interactions
- En Español
- 66 Reviews
- Drug class: antidiabetic combinations
- FDA Alerts (4)