Discuss with your doctor or dietitian if you have any concerns or questions regarding how to manage your diet. Gastrointestinal problems: If you have bowel or rectal problems, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Bleeding from the rectum has been reported with the use of orlistat. If this occurs, contact your doctor as soon as possible. Kidney stones: If you have a history of kidney stones, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Liver: There have been rare reports of severe liver injury in people taking orlistat. If you experience any symptoms such as loss of appetite, yellow skin or eyes, abdominal pain, dark urine, light-coloured stools, or pain in the upper right part of the abdomen, contact your doctor immediately. Seizures: Orlistat may interact with seizure medications by decreasing the amount of seizure medication that your body absorbs. This can result in increased seizures.
If you have a history of seizures, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed. Thyroid: Orlistat may affect how well your thyroid gland works, possibly by reducing the amount of iodine available from your diet for your body to produce thyroid hormone. If you have hypothyroidism low thyroid hormone levels , your doctor should closely monitor your condition while you are taking orlistat, as it may affect thyroid levels.
Vitamins: Orlistat may reduce the absorption of beta-carotene and fat-soluble vitamins such as vitamin A, vitamin D, vitamin E, and vitamin K. Talk to your doctor or pharmacist about taking a multivitamin supplement. If you are already on a multivitamin, take it at least 2 hours before or after taking orlistat, or take it at bedtime.
Pregnancy: Orlistat has not been adequately studied in pregnant women. This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately. Breast-feeding: It is not known if orlistat passes into breast milk.
If you are a breast-feeding mother and taking this medication, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding. Children: The safety and effectiveness of orlistat have not been established for use in children less than 12 years of age. If you are taking any of these medications, speak with your doctor or pharmacist. One way to help with weight loss is to reduce the amount of fat in your diet. See the separate leaflet called Weight Loss Weight Reduction.
Orlistat works by interfering with the way that fat is digested and absorbed into the body. Doctors have guidelines as to when orlistat can be prescribed. You can also buy orlistat from pharmacies - but certain conditions apply, detailed below. If you take orlistat, it may possibly interfere with the absorption of some vitamins, so you should take a multivitamin supplement at bedtime.
Tell your doctor or pharmacist if you take any other medicines, as orlistat can interfere with the absorption of some medicines.
Orlistat is a medicine which can help you to lose weight if you are overweight or obese. Orlistat works by blocking chemicals enzymes in your gut which digest fat. Nearly a third of the fat that you eat is blocked by orlistat. The undigested fat is not absorbed into your body and is passed out with your stools faeces. The normal dose is one capsule - mg, three times a day with each meal.
However, you do not need to take one if there is no fat in the meal or if you miss a meal. Liraglutide is a new medicine that was licensed for the treatment of obesity in January There has been limited experience of this treatment, which is only available in injectable form. It is currently mainly being used in specialist centres for people whose obesity has led them to develop other illnesses such as diabetes. Two other medicines - sibutramine and rimonabant - previously used to help with weight loss are no longer available in the UK because of concerns over their safety.
Orlistat for weight loss is available via a private service from your local pharmacist. Book a consultation to discuss your weight loss options through the Patient Access app. Reported side-effects of eating too much fat include: flatulence, oily spotting on underwear, increased urgency and loose bowel movements.
Studies have shown that, on average, orlistat, plus a weight-reducing diet and exercise, causes more weight loss than a weight-reducing diet and exercise alone. In others, it is less effective. One reason why orlistat may not work is that you may think that you can relax your weight-reducing diet, and the orlistat will 'do it all'. This is not true. In order to lose weight you still have to eat less and exercise regularly. Remember, orlistat prevents only some of the fat that you eat from being absorbed just under a third.
This site complies with the HONcode standard for trustworthy health information: verify here. This content does not have an English version. This content does not have an Arabic version. See more conditions. Healthy Lifestyle Weight loss. Products and services. Alli weight-loss pill: Does it work? By Mayo Clinic Staff. Thank you for Subscribing Our Housecall e-newsletter will keep you up-to-date on the latest health information.
Please try again. Something went wrong on our side, please try again. Show references Frequently asked questions Alli. Accessed Sept. Orlistat Xenical prescribing information. Hoffmann-La Roche, Inc. Orlistat Alli prescribing information. Khera R, et al. Association of pharmacological treatments for obesity with weight loss and adverse events: A systematic review and meta-analysis. Micromedex 2. Bray GA. Read customer reviews. Last updated 16 December Xenical , the brand name for mg capsules of the active ingredient Orlistat , is a weight loss medicine that works by reducing the amount of fat absorbed by the body.
A complement to your weight loss plan Xenical only works in combination with a healthy diet and exercise plan. Taking Xenical Xenical should be taken by following certain protocol: Take the capsule with a meal or up to one hour after a meal. Take Xenical with approximately three meals per day.
Do not take Xenical with a meal in which one third of the calories come from fat. Stop taking Xenical when weight loss goal has been achieved.
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