The term " Pen Injection " or " Weight Loss Pen " has become a hot topic among people seeking to manage their weight. Many see it as a new aid making weight loss easier, but questions remain: What exactly is a weight loss pen? How does it work? Who is it suitable for? Does it really help reduce obesity, or is it just a trend?
Thairath Online has summarized interesting information about " pen injection " for you to study the basics, including side effects and precautions before deciding to use it.
Pen injection or using a weight loss pen (English: Weight Loss Injection Pen) is the administration of weight control medication via a pen-like device. The medication is approved by the Food and Drug Administration for treating overweight and obesity under medical supervision, alongside behavioral modification.
This group of drugs mimics hormones in the body related to hunger and satiety control. They send signals to the brain to feel full faster, reduce appetite, and decrease food intake, helping better manage daily energy consumption.
A key reason pen injection has become a popular choice for many is that it helps reduce hunger and makes diet control easier, especially for those who have tried dieting and exercising but have not achieved desired results. .
According to information from the Thai Red Cross Society,weight loss pens are not suitable for everyone.They are considered for people with medical indications such as
BMI = weight (kilograms) ÷ height (meters)²
Example:weight 80 kilograms, height 1.55 meters.
Calculation:BMI = 80 ÷ (1.55 × 1.55) = 33.3 kg/m².
Therefore, this example falls into the obesity category and may be considered by doctors for weight control medication.
The Thai Red Cross Society states that when used correctly and under medical supervision, along with proper diet control and exercise, weight loss pens can help reduce body weight by an average of about 10–20% of the starting weight. (Results may vary depending on individual lifestyle, drug response, and overall health conditions).
It is important to emphasize that weight loss pens are not a " magic drug " that causes weight loss without lifestyle changes. The key to sustainable weight loss remains a balanced diet, exercise, and overall health care.
Although weight loss pens are effective for weight management, side effects may occur. Common symptoms include:
If abnormal symptoms or severe side effects occur, consult a doctor immediately.
Weight loss pens should only be used when medically indicated. Avoid purchasing from unreliable sources as this risks counterfeit or substandard drugs and side effects without proper medical monitoring.
Before starting medication, a thorough health evaluation is necessary so doctors can assess suitability and plan safe long-term weight management.
In summary, weight loss pen injection is a medical tool that helps treat overweight and obesity by reducing hunger and increasing satiety, aiding better food intake control and weight loss when combined with behavior modification.
However, it should only be used under medical supervision because it is not suitable for everyone and cannot replace basic health care such as a balanced diet and exercise.
Reference information:Chulalongkorn Hospital, Thai Red Cross Society,,Phyathai 3 Hospital,,Samitivej Hospital