Why Injection Technique Matters
GLP-1 therapies like semaglutide work by:
- Slowing gastric emptying
- Enhancing satiety signals
- Regulating insulin and glucagon secretion
Proper subcutaneous injection ensures gradual, stable absorption, which supports consistent blood levels and effects ².
Where to Inject GLP-1: Recommended Sites
1. Abdomen
- Most common and user-friendly
- Inject at least 2 inches from the navel
- Avoid scarred or bruised areas
- Ideal for self-administration
2. Thigh
- Use the front or outer thigh
- Pick a spot halfway between hip and knee
- Rotate between legs weekly
3. Upper Arm
- Use the back of the upper arm (between shoulder and elbow)
- Best done with assistance
- Ensure injection is into fatty tissue, not muscle
Research confirms comparable bioavailability across all these sites ¹, allowing patients to choose based on preference and accessibility.
Injection Tips for Comfort and Safety
- Clean your hands and site with alcohol
- Pinch a skin fold to avoid intramuscular delivery
- Insert the needle at a 90° angle (or 45° if you’re lean)
- Hold the injector button until all medication is delivered
- Do not rub the site post-injection
How to Rotate GLP-1 Injection Sites
Rotating your injection location helps prevent:
- Skin thickening (lipohypertrophy)
- Bruising and soreness
- Absorption variability ¹
Sample Rotation Plan
Week |
Site |
Location |
1 |
Abdomen |
Left side |
2 |
Thigh |
Right thigh |
3 |
Arm |
Left arm |
4 |
Abdomen |
Right side |
Return to previous areas after at least 4 weeks to allow skin to recover ¹.
What to Avoid
Do not inject into:
- Bruised, red, or scarred areas
- Muscle or veins
- Skin with stretch marks, infections, or near your navel (stay 2" away)
These locations may increase discomfort and reduce absorption reliability ¹.
Common Mistakes and Fixes
Mistake |
Fix |
Injecting same spot every week |
Use a rotation schedule |
Not pinching the skin |
May lead to muscle injection (painful) |
Skipping site disinfection |
Clean with alcohol to prevent infections |
Removing pen too quickly |
Hold for 5–10 seconds post-injection |
Managing Injection Site Reactions
Mild redness or swelling is common and temporary. To minimize discomfort:
- Use new needles each time
- Let alcohol dry fully before injecting
- Rotate sites to reduce irritation ¹
- Apply a cool compress if needed
If irritation persists, consult your licensed healthcare provider.
Step-by-Step: How to Inject Your GLP-1 Medication
- Wash hands
- Prepare your pen, needle, and alcohol swab
- Choose and clean your injection site
- Pinch skin, insert needle at the correct angle
- Press and hold for full dose delivery
- Dispose of needle in a sharps container
- Store your medication per label instructions
Repeat weekly or as prescribed by your provider.
How Eden Supports Your GLP-1 Treatment
Eden offers more than prescriptions. We connect patients with:
- Licensed providers with whom you can complete an assessment
- Guidance on injection technique and site rotation
- Dose escalation protocols
- Ongoing weight management and symptom support
- *Eligibility is not guaranteed
No guesswork. Just medically guided care.
Final Thoughts
Understanding where to inject GLP-1 and how to rotate injection sites can significantly impact your comfort and success. While site choice doesn’t affect drug absorption, it does influence consistency, skin health, and adherence ¹.
If you're ready for GLP-1 treatment support, Eden can help guide every step of your journey, from medication to lifestyle and beyond.
Disclaimer
This article is for educational purposes and does not replace professional medical advice. GLP-1 medications like semaglutide should be used only under a licensed provider's supervision. Eden connects patients with clinicians who will conduct an assessment and verify whether or not you are an eligible candidate.