The Difference Between Saxenda Injection and Phentermine
- aliza khan
- Feb 24
- 2 min read
Choosing the right weight loss treatment can be overwhelming, especially with options like Saxenda Injection in Oman and Phentermine gaining popularity. Both are prescribed for weight management, but they work differently in the body. Understanding their mechanisms, benefits, and side effects is essential before making a choice.
How Saxenda and Phentermine Work:
Saxenda (Liraglutide):
This injectable medication mimics a natural hormone called GLP-1, which regulates appetite. It helps in reducing hunger and increasing feelings of fullness.
Phentermine:
A stimulant that suppresses appetite by affecting the central nervous system. It triggers the release of neurotransmitters to reduce hunger and boost energy levels.
While both medications support weight loss, Saxenda Injection in Oman is often preferred for its long-term effectiveness, while Phentermine is generally prescribed for short-term use.

Key Differences Between Saxenda and Phentermine:
1. Usage and Administration:
Saxenda is a daily subcutaneous injection, making it a more structured approach to weight management.
Phentermine is available in tablet or capsule form, typically taken once a day in the morning.
2. Mechanism of Action:
Saxenda controls appetite by slowing gastric emptying and influencing hunger-related brain signals.
Phentermine increases heart rate and metabolism, stimulating fat burning and reducing appetite.
3. Duration of Treatment:
Saxenda is designed for long-term use, often for several months or even years.
Phentermine is only recommended for short-term use (a few weeks to a few months) due to potential dependency risks.
4. Effectiveness and Weight Loss Results:
Studies show that patients using Saxenda experience gradual and sustained weight loss.
Phentermine users often see rapid initial weight loss, but results may plateau over time.

5. Suitability for Different Individuals:
Saxenda is ideal for people with obesity (BMI ≥30) or overweight individuals (BMI ≥27) with related conditions like diabetes or hypertension.
Phentermine is usually prescribed for those needing quick weight loss results under medical supervision.
Safety and Side Effects:
Common Side Effects of Saxenda:
Nausea and vomiting
Diarrhea or constipation
Injection site reactions
Increased heart rate
Common Side Effects of Phentermine:
Insomnia and restlessness
Increased blood pressure
Dry mouth
Potential for addiction with prolonged use
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