Compare Januvia vs. Byetta

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Januvia (sitagliptin)

Prescription only

Byetta (Exenatide)

Prescription only
Lowers your blood sugar.

Januvia (sitagliptin) is a good add-on treatment if your blood sugars are not controlled and you don't want to use an injectable medicine.

3.2/ 5 average rating with 143 reviewsforJanuvia
Lowers blood sugar.

Byetta (Exenatide) can lower your blood sugars in addition to metformin. It does not increase your appetite unlike some other anti-diabetics, but must be given by injection and usually causes upset stomach.

Upsides
  • Oral blood sugar-lowering medicine.
  • Januvia (sitagliptin) is not linked to worsening heart failure like other medicines in its class.
  • Uses the hormones naturally produced by your body to affect how sugar is processed.
  • It is less likely to cause weight gain and low blood sugar compared to other diabetes medicines.
  • Can lower your A1c (average blood sugar over time) by 1%.
  • Not as likely to cause very low blood sugar as glyburine or insulin.
  • Does not increase your appetite like other anti-diabetic medicines.
  • Pen is dialed to a single dose for easy injections.
Downsides
  • Lowers A1c (average blood sugar over time) by less than 1%.
  • Available as brand version only.
  • Some people might get frequent cold-like symptoms.
  • Rare but serious side effects include pancreatitis and severe joint pain.
  • Byetta (Exenatide) must be injected twice a day. Other medicines like it can be injected once daily or even weekly.
  • It commonly causes nausea, vomiting, diarrhea, constipation, or indigestion.
  • Can affect how well your antibiotics and birth control pills work. Take them no sooner than one hour after your injections.
Used for
Dosage forms
  • Pill
  • Injection
Price
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Reviews
143 reviews so far
44%
saidit'sworth it
34%
saiditworked well
17%
saidit'sa big hassle

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Side effects
3possible side effects
  • Common cold
    5%
  • Diarrhea
    3%
  • Abdominal pain
    2%
See more detailed side effects
3possible side effects
  • Nausea
    8%
  • Vomiting
    4%
  • Upset stomach
    3%
See more detailed side effects
Risks and risk factors
  • Death from inflammation of the pancreas (pancreatitis)
    • History of pancreatitis
    • High blood triglyceride levels
    • Gallstones (stones in gallbladder)
    • History of alchoholism
    • Kidney problems
  • Serious allergic reactions
  • Kidney damage
    • Pre-existing kidney damage
  • Low blood sugar (hypoglycemia)
    • Taking medicines for diabetes
  • Severe joint pain and swelling
See more detailed risks and warnings
  • Loss of medication effectiveness
  • Pancreatitis
  • Kidney problems
    • Severe renal impairment
    • End-stage renal disease
  • Serious stomach problems
    • Severe gastrointestinal disease
    • Gastroparesis
  • Low blood sugar (hypoglycemia)
See more detailed risks and warnings