Adipex vs. Farxiga
See how Adipex and Farxiga compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Adipex is a short-term stimulant for weight loss, while Farxiga is a long-term medication for diabetes, heart failure, and kidney disease, not a weight-loss drug.
Both are taken as oral tablets or capsules, but they come from completely different drug classes with different risks and monitoring needs.
Farxiga carries FDA approval for four separate conditions including heart failure and chronic kidney disease, while Adipex is approved only for a few weeks of obesity treatment.
Adipex vs. Farxiga Drug Summary
Adipex
Adipex (phentermine) is a stimulant-class appetite suppressant approved for short-term weight loss in adults with obesity, used alongside diet and exercise. It is taken once or twice daily as an oral tablet or capsule, generally for only a few weeks at a time.
Farxiga
Farxiga (dapagliflozin) is an SGLT2 inhibitor approved for type 2 diabetes, heart failure, and chronic kidney disease. It is taken as a single oral tablet once daily, and any weight loss during treatment is a secondary effect, not an approved use.
Adipex vs. Farxiga Side Effects
Adipex
Farxiga
Adipex vs. Farxiga Dosage
Adipex
Farxiga
| STAGE | DOSE | WHEN |
| Starting dose | 18.75 mg once daily | At the start |
| Maximum dose | 15 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 5 mg once daily | At the start |
| Maximum dose | 10 mg once daily | If needed |
| Dose changes | 1 increase | As tolerated |
Adipex
| STAGE | DOSE | WHEN |
| Starting dose | 18.75 mg once daily | At the start |
| Maximum dose | 15 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
Farxiga
| STAGE | DOSE | WHEN |
| Starting dose | 5 mg once daily | At the start |
| Maximum dose | 10 mg once daily | If needed |
| Dose changes | 1 increase | As tolerated |
Adipex vs. Farxiga Indications
Adipex
Adipex is FDA-approved only for short-term weight loss, typically just a few weeks, as an adjunct to diet and exercise in adults with obesity. It is not approved for long-term or chronic weight management.
Short-term (a few weeks) weight-loss aid for adults with obesity
Used alongside diet and exercise, not as a standalone treatment
Not approved for chronic or long-term weight management
Not approved for use in patients 16 and younger
Farxiga
Farxiga is FDA-approved for type 2 diabetes, heart failure, and chronic kidney disease, including children 10 and older with diabetes. It is not approved for weight loss, though modest weight loss can occur as a side effect.
Blood sugar control in type 2 diabetes, ages 10 and up
Reduces heart failure hospitalization risk with cardiovascular risk factors
Treats heart failure to lower cardiovascular death and hospitalization
Slows kidney function decline in chronic kidney disease
Adipex vs. Farxiga Pros and Cons
Adipex
Adipex offers rapid appetite suppression at a low cost, but its use is restricted to short courses due to abuse potential and cardiovascular risk. It is a controlled substance requiring careful monitoring, especially in people with heart conditions.
Pros
Effective appetite suppression, often felt within days
Low list price, roughly $50 to $150 a month
Widely available in low-cost generic form nationwide
Cons
Approved for only a few weeks of use, not long-term therapy
Schedule IV controlled substance with abuse and dependence potential
Contraindicated in people with heart disease or uncontrolled high blood pressure
Common stimulant side effects like insomnia and restlessness
Farxiga
Farxiga provides long-term protection for the heart and kidneys in addition to blood sugar control, but it carries a higher price tag and specific infection risks. It requires kidney function monitoring and is not intended as a weight-loss drug.
Pros
FDA-approved for four separate conditions, including heart failure and CKD
Suitable for long-term daily use, not just short courses
Simple once-daily dosing with only two dose strengths
Cons
Roughly $400 to $785 a month before insurance or savings programs
Increased risk of genital yeast infections and urinary tract infections
Rare but serious risk of Fournier's gangrene and ketoacidosis
Not approved or intended for weight loss
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