Metformin vs. Jardiance
See how Metformin and Jardiance compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Metformin is a low-cost, first-line pill that lowers blood sugar by reducing how much glucose the liver makes, while Jardiance also protects the heart and kidneys.
Metformin's most common side effects are gastrointestinal, while Jardiance can cause genital infections and, rarely, diabetic ketoacidosis.
Many people with type 2 diabetes and heart or kidney disease end up taking both drugs together, since they work through different pathways.
Metformin vs. Jardiance Drug Summary
Metformin
Metformin is a biguanide that lowers blood sugar by decreasing glucose production in the liver and improving insulin sensitivity. It's the first-line oral treatment for type 2 diabetes in adults and children 10 and older, taken as a tablet or liquid, usually with meals.
Jardiance
Jardiance is an SGLT2 inhibitor that lowers blood sugar by causing the kidneys to remove excess glucose through urine. It's approved for adults and children 10 and older with type 2 diabetes, and also to reduce cardiovascular death, heart failure, and kidney disease progression, taken once daily as a tablet.
Metformin vs. Jardiance Side Effects
Metformin
Jardiance
Metformin vs. Jardiance Dosage
Metformin
Jardiance
| STAGE | DOSE | WHEN |
| Starting dose | 500 mg twice daily | Week 1 |
| Maximum dose | 500 mg once daily | Week 1 |
| Dose changes | 2 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 10 mg once daily | At the start |
| Maximum dose | 25 mg once daily | If needed |
| Dose changes | 1 increase | As tolerated |
Metformin
| STAGE | DOSE | WHEN |
| Starting dose | 500 mg twice daily | Week 1 |
| Maximum dose | 500 mg once daily | Week 1 |
| Dose changes | 2 increases | As tolerated |
Jardiance
| STAGE | DOSE | WHEN |
| Starting dose | 10 mg once daily | At the start |
| Maximum dose | 25 mg once daily | If needed |
| Dose changes | 1 increase | As tolerated |
Metformin vs. Jardiance Indications
Metformin
Metformin is FDA-approved for blood sugar control in adults and children 10 and older with type 2 diabetes. It's also used off-label for polycystic ovary syndrome and for weight management in people with prediabetes.
Type 2 diabetes in adults
Type 2 diabetes in children 10+
Off-label: PCOS
Off-label: prediabetes/weight management
Jardiance
Jardiance is FDA-approved for blood sugar control in adults and children 10 and older with type 2 diabetes. It's also approved to reduce cardiovascular death in people with heart disease, to reduce heart failure hospitalization, and to slow chronic kidney disease progression.
Type 2 diabetes in adults
Type 2 diabetes in children 10+
Reduce cardiovascular death in heart disease
Reduce heart failure hospitalization
Metformin vs. Jardiance Pros and Cons
Metformin
Metformin has decades of safety data and is one of the least expensive diabetes medications available. It doesn't cause weight gain or significant hypoglycemia on its own, though GI side effects are common early in treatment.
Pros
Roughly $4 to $30 per month without insurance
Decades of real-world safety data
Low risk of hypoglycemia when used alone
Available in immediate- and extended-release forms
Cons
Common GI side effects like diarrhea and nausea
Boxed warning for rare but serious lactic acidosis
Must be paused before contrast dye imaging
Doesn't provide direct heart or kidney protection
Jardiance
Jardiance offers proven cardiovascular and kidney benefits beyond blood sugar control, with simple once-daily dosing and no titration needed. It carries a much higher price tag along with risks of genital infections and rare but serious complications.
Pros
Once-daily dosing with no titration schedule
Reduces risk of cardiovascular death in heart disease
Reduces heart failure hospitalization risk
Slows chronic kidney disease progression
Cons
Roughly $350 to $620 per month without insurance, before savings programs
Increased risk of genital yeast infections and UTIs
Rare risk of diabetic ketoacidosis even with normal blood sugar
Rare but serious risk of Fournier's gangrene
Common Symptoms and Related Diseases You Can Explore
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