Januvia

DRUG DESCRIPTION

JANUVIA Tablets contain sitagliptin phosphate, an orally-active inhibitor of the dipeptidyl peptidase-4 (DPP-4) enzyme.

Sitagliptin phosphate monohydrate is described chemically as 7-[(3R)-3-amino-1-oxo-4-(2,4,5-trifluorophenyl)butyl]-5,6,7,8-tetrahydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazine phosphate (1:1) monohydrate.

The empirical formula is C16H15F6N5O•H3PO4•H2O and the molecular weight is 523.32. The structural formula is:

JANUVIA®
  (sitagliptin) Structural Formula Illustration

Sitagliptin phosphate monohydrate is a white to off-white, crystalline, non-hygroscopic powder. It is soluble in water and N,N-dimethyl formamide; slightly soluble in methanol; very slightly soluble in ethanol, acetone, and acetonitrile; and insoluble in isopropanol and isopropyl acetate.

Each film-coated tablet of JANUVIA contains 32.13, 64.25, or 128.5 mg of sitagliptin phosphate monohydrate, which is equivalent to 25, 50, or 100mg, respectively, of free base and the following inactive ingredients: microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, and sodium stearyl fumarate. In addition, the film coating contains the following inactive ingredients: polyvinyl alcohol, polyethylene glycol, talc, titanium dioxide, red iron oxide, and yellow iron oxide.

What are the possible side effects of sitagliptin (Januvia)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking sitagliptin and call your doctor at once if you have a serious side effect such as:

  • pancreatitis - severe pain in your upper stomach spreading to your back, nausea and vomiting, loss of appetite, fast heart rate; or
  • fever, sore throat, and headache with a severe blistering, peeling, and red skin rash.

Less serious side effects may...

Read All Potential Side Effects and See Pictures of Januvia »

What are the precautions when taking sitagliptin phosphate (Januvia)?

Before taking sitagliptin, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, disease of the pancreas (pancreatitis).

You may experience blurred vision, dizziness, or drowsiness due to extremely low or high blood sugar levels. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely.

Limit alcohol while taking this medication because it can increase your risk of developing low blood...

Read All Potential Precautions of Januvia »


Januvia Consumer (continued)

SIDE EFFECTS: Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Although sitagliptin by itself usually does not cause low blood sugar (hypoglycemia), low blood sugar may occur if this drug is prescribed with other anti-diabetic medications. Talk with your doctor or pharmacist about whether the dose of your other diabetic medication(s) needs to be lowered.

Symptoms of low blood sugar include sudden sweating, shaking, fast heartbeat, hunger, blurred vision, dizziness, or tingling hands/feet. It is a good habit to carry glucose tablets or gel to treat low blood sugar. If you don't have these reliable forms of glucose, rapidly raise your blood sugar by eating a quick source of sugar such as table sugar, honey, or candy, or drink fruit juice or non-diet soda. Tell your doctor about the reaction immediately. Low blood sugar is more likely if you drink large amounts of alcohol, do unusually heavy exercise, or do not consume enough calories from food. To help prevent low blood sugar, eat meals on a regular schedule, and do not skip meals. Check with your doctor or pharmacist to find out what you should do if you miss a meal.

Symptoms of high blood sugar (hyperglycemia) include thirst, increased urination, confusion, drowsiness, flushing, rapid breathing, and fruity breath odor. If these symptoms occur, tell your doctor immediately. Your doctor may need to adjust your diabetes medication(s).

Tell your doctor right away of any serious side effects, including: change in the amount of urine.

Stop taking sitagliptin and tell your doctor right away if any of these very serious side effects occur: signs of pancreatitis (such as persistent nausea/vomiting, loss of appetite, severe stomach/abdominal/back pain).

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

PRECAUTIONS: Before taking sitagliptin, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, disease of the pancreas (pancreatitis).

You may experience blurred vision, dizziness, or drowsiness due to extremely low or high blood sugar levels. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely.

Limit alcohol while taking this medication because it can increase your risk of developing low blood sugar.

It may be harder to control your blood sugar when your body is stressed (such as due to fever, infection, injury, or surgery). Consult your doctor because increased stress may require a change in your treatment plan, medications, or blood sugar testing.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

During pregnancy this medication should be used only when clearly needed. Pregnancy may cause or worsen diabetes. Discuss a plan with your doctor for managing your blood sugar while pregnant. Your doctor may change your diabetes treatment during your pregnancy. Discuss the risks and benefits of different treatments (such as diet, exercise, and medications including insulin).

It is unknown whether this drug passes into breast milk. Consult your doctor before breast-feeding.


Januvia Patient Information Including Side Effects

Brand Names: Januvia

Generic Name: sitagliptin (Pronunciation: SI ta glip tin)

  • What is sitagliptin (Januvia)?
  • What are the possible side effects of sitagliptin (Januvia)?
  • What is the most important information I should know about sitagliptin (Januvia)?
  • What should I discuss with my healthcare provider before taking sitagliptin (Januvia)?
  • How should I take sitagliptin (Januvia)?
  • What happens if I miss a dose (Januvia)?
  • What happens if I overdose (Januvia)?
  • What should I avoid while taking sitagliptin (Januvia)?
  • What other drugs will affect sitagliptin (Januvia)?
  • Where can I get more information?

What is sitagliptin (Januvia)?

Sitagliptin is an oral diabetes medicine that helps control blood sugar levels. It works by regulating the levels of insulin your body produces after eating.

Sitagliptin is for people with type 2 diabetes (non-insulin-dependent) diabetes. Sitagliptin is sometimes used in combination with other diabetes medications, but is not for treating type 1 diabetes.

Sitagliptin may also be used for other purposes not listed in this medication guide.

What are the possible side effects of sitagliptin (Januvia)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking sitagliptin and call your doctor at once if you have a serious side effect such as:

  • pancreatitis - severe pain in your upper stomach spreading to your back, nausea and vomiting, loss of appetite, fast heart rate; or
  • fever, sore throat, and headache with a severe blistering, peeling, and red skin rash.

Less serious side effects may include:

  • runny or stuffy nose, sore throat;
  • headache; or
  • nausea, stomach pain, diarrhea.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about sitagliptin (Januvia)?

Do not use this medication if you are allergic to sitagliptin or if you are in a state of diabetic ketoacidosis (call your doctor for treatment with insulin).

Before taking sitagliptin, tell your doctor if you have kidney disease, if you are on dialysis, or if you have a history of pancreatitis.

You may take this medicine with or without food. Follow your doctor's instructions.

Follow your doctor's instructions about any restrictions on food, beverages, or activity while you are taking sitagliptin.

Stop taking sitagliptin and call your doctor at once if you have severe pain in your upper stomach spreading to your back, nausea and vomiting, loss of appetite, or fast heart rate.

Sitagliptin is only part of a complete program of treatment that also includes diet, exercise, weight control, and possibly other medications. It is important to use this medicine regularly to get the most benefit. Get your prescription refilled before you run out of medicine completely.

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