What side effects are most common with Synjardy (empagliflozin/metformin)?
Synjardy can cause side effects that fall into two main categories: stomach/GI effects (from metformin) and increased urination/genital yeast issues (from empagliflozin).
Commonly reported issues include:
- Diarrhea, nausea, vomiting, stomach upset, gas, and reduced appetite (metformin-related GI effects)
- Frequent urination or increased thirst (the empagliflozin effect on urine glucose loss)
If the stomach symptoms are bothersome, taking the medicine with food and using the prescribed dose schedule can help reduce metformin-related GI effects.
What serious side effects should you watch for?
Some Synjardy side effects need urgent medical attention. Key red-flag events include:
- Signs of diabetic ketoacidosis (DKA), which can occur even with normal or only mildly elevated blood sugar. Symptoms can include nausea/vomiting, abdominal pain, trouble breathing, unusual sleepiness, and fruity breath.
- Severe dehydration or low blood pressure, especially if you are sick, not drinking fluids well, or on diuretics. Symptoms can include dizziness, fainting, or feeling very weak.
- Serious genital infections (more often yeast infections), such as painful redness/swelling, fever, or symptoms that don’t improve.
- Lactic acidosis (a rare but serious metformin-related complication). Symptoms include unusual muscle pain, trouble breathing, severe drowsiness, stomach pain with nausea, or feeling very weak.
If any of these occur, seek urgent care or contact your prescriber right away.
Can Synjardy cause yeast infections or UTIs?
Empagliflozin increases glucose in urine, which can raise the risk of genital yeast infections (more common in people with a prior history). Symptoms often include itching, burning, redness, discharge, or discomfort.
Urinary tract infections can also occur. Contact a clinician if you develop burning with urination, fever, flank/back pain, or symptoms that worsen.
Who is at higher risk for dangerous complications?
Risk for severe complications is higher in situations like:
- Dehydration (vomiting/diarrhea, poor fluid intake, heat exposure, or heavy exercise without replacement fluids)
- Acute illness or surgery
- People with significant kidney impairment (metformin and empagliflozin safety depend on kidney function)
- People with conditions that predispose to ketoacidosis (for example, very low-carb intake, prolonged fasting, heavy alcohol use, or insulin deficiency)
Your prescriber may advise temporarily stopping Synjardy during acute illness or before certain procedures.
Are there differences in side effects between starting Synjardy vs later on?
Many metformin-related GI side effects show up early and often lessen as your body adjusts. The “urination/thirst” effect from empagliflozin may be most noticeable after starting or increasing the dose.
Infections (like yeast infections) can happen at any time, but they are often noticed after starting therapy or when glucose levels fluctuate.
What can you do to reduce side effects?
Common practical steps include:
- Take Synjardy with food if you experience stomach upset (typical for metformin tolerance).
- Stay well hydrated, especially during hot weather or when you’re sick.
- Monitor for genital symptoms early so treatment can start promptly.
- Follow dose and lab-monitoring instructions, particularly kidney function checks.
Never stop or change the medication without guidance from your clinician, but ask about “sick day” rules if you get vomiting/diarrhea or can’t keep fluids down.
When should you call a doctor urgently?
Call urgent care or seek emergency help if you have:
- Symptoms of ketoacidosis (nausea/vomiting, abdominal pain, rapid breathing, confusion, unusual sleepiness)
- Signs of lactic acidosis (severe weakness, trouble breathing, severe drowsiness, persistent stomach pain with nausea)
- Fainting, severe dizziness, or inability to drink fluids
- Fever and worsening genital or urinary symptoms
Sources
No external sources were provided with your request. If you want, tell me your dose (Synjardy vs Synjardy XR, and the mg strength) and any kidney problems or prior infections, and I can tailor the side-effect risks and the most relevant “watch for” symptoms.