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Difference between Xenical and Alli

Difference between Xenical and Alli

It can be difficult to determine which weight loss drug is right for you. Xenical and Alli are both prescription-strength drugs that help people lose weight, but there are some key differences between the two. This article will outline the differences between Xenical and Alli, so that you can make an informed decision about which drug is best for you. Both drugs have been shown to be effective in helping people lose weight, but there are some important distinctions between them. Keep reading to learn more!

What is Xenical?

Xenical is a medication used to treat obesity. The active ingredient in Xenical is orlistat, which is a lipase inhibitor. Lipase is an enzyme that breaks down fats in the intestine. By inhibiting the action of lipase, Xenical reduces the amount of fat absorbed by the body. Xenical is typically used in conjunction with a reduced-calorie diet and exercise program. Common side effects of Xenical include gastrointestinal discomforts, such as diarrhea, oily stools, and flatulence. Xenical is available by prescription only.

What is Alli?

Alli is a weight loss aid that is designed for use by adults aged 18 and over who are overweight. Alli works by reducing the amount of fat absorbed by the body. Alli is available in capsule form and should be taken with each main meal that contains fat. Alli can help you to lose weight, but it is important to remember that it is only part of a weight loss program that also includes a healthy diet and exercise. Alli is not suitable for everyone, so it is important to speak to a doctor or pharmacist before taking it.

Difference between Xenical and Alli

Xenical and Alli are two weight loss medications that are typically prescribed to obese patients.

  • Xenical is the brand name for the prescription drug Orlistat, while Alli is the over-the-counter version of Orlistat.
  • Both Xenical and Alli work by preventing the absorption of fat in the gut, which can lead to weight loss.
  • However, there are some key differences between Xenical and Alli. Xenical is a more potent medication and is therefore more effective at promoting weight loss.
  • However, Xenical can also cause more side effects, such as gastrointestinal issues and oily stools.
  • Alli, on the other hand, is a less potent version of Xenical and is not associated with as many side effects.

Therefore, it may be a better option for patients who are struggling with obesity but cannot tolerate Xenical.


Xenical and Alli are two different types of prescription weight loss medications. Both medications work by preventing the body from absorbing fat, but Xenical is a stronger medication. Xenical is typically prescribed to people who are obese, while Alli is prescribed to people who are overweight. There are some differences between the two medications, including how often they can be taken and the side effects that may occur. If you are considering taking one of these medications to help with your weight loss goals, speak to your doctor to determine which medication would be best for you.

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