Key facts
- Active ingredient
- Orlistat
- Form
- Capsule
- Strength
- Orlistat 120MG
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- obesity
- Manufacturer
- Cheplapharm
- What the pharmacy pays
- ~$207.04 for 30 — not your price
- FDA application
- NDA020766
What is Xenical?
From the FDA label:XENICAL (orlistat) is a gastrointestinal lipase inhibitor for obesity management that acts by inhibiting the absorption of dietary fats. Orlistat is (S)-2-formylamino-4-methyl-pentanoic acid (S)-1-[[(2S, 3S)-3-hexyl-4-oxo-2-oxetanyl] methyl]-dodecyl ester. Its empirical formula is C 29 H 53 NO 5 , and its molecular weight is 495.7. It is a single diastereomeric molecule that contains four chiral centers, with a negative optical rotation in ethanol at 529 nm. The structure is: Orlistat is a white to off-white crystalline powder. Orlistat is practically insoluble in water, freely soluble in chloroform, and very soluble in methanol and ethanol. Orlistat has no p K a within the physiological pH range. XENICAL is available for oral administration as a turquoise hard-gelatin capsule. The capsule is imprinted with black. Each capsule contains a pellet formulation consisting of 120 mg of the active ingredient, orlistat, as well as the inactive ingredients microcrystalline cellulose, sodium starch glycolate, sodium lauryl sulfate, povidone, and talc. The capsule shell contains gelatin, titanium dioxide, and FD&C Blue No. 2 with black printing ink containing pharmaceutical grade shellac, propylene glycol, strong ammonium solution, potassium hydroxide and black iron oxide. chemical structure
How to use
One 120-mg capsule three times a day with each main meal containing fat (during or up to 1 hour after the meal). ( 2 ) Advise patients to take a nutritionally balanced, reduced-calorie diet that contains approximately 30% of calories from fat. ( 2 ) Distribute the daily intake of fat, carbohydrate, and protein over three main meals. ( 2 ) Advise patients to take a multivitamin containing fat-soluble vitamins to ensure adequate nutrition. ( 2 ) Take the vitamin supplement at least 2 hours before or after the administration of XENICAL, such as at bedtime. ( 2 ) For patients receiving both XENICAL and cyclosporine therapy, administer cyclosporine 3 hours after XENICAL. ( 2 ) For patients receiving both XENICAL and levothyroxine therapy, administer levothyroxine and XENICAL at least 4 hours apart. ( 2 ) 2.1 Recommended Dosing The recommended dose of XENICAL is one 120-mg capsule three times a day with each main meal containing fat (during or up to 1 hour after the meal). The patient should be on a nutritionally balanced, reduced-calorie diet that contains approximately 30% of calories from fat. The daily intake of fat, carbohydrate, and protein should be distributed over three main meals. If a meal is occasionally missed or contains no fat, the dose of XENICAL can be omitted. Because XENICAL has been shown to reduce the absorption of some fat-soluble vitamins and beta-carotene,…
Side effects
Most common treatment emergent adverse reactions (≥5% and at least twice that of placebo) include oily spotting, flatus with discharge, fecal urgency, fatty/oily stool, oily evacuation, increased defecation and fecal incontinence. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact the Safety Call Center at 1-888-236-5445 or FDA at 1‑800‑FDA‑1088 (1-800-332-1088) or www.fda.gov/medwatch. 6.1 Clinical Trials Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in patients. Commonly Observed (based on first year and second year data) Gastrointestinal (GI) symptoms were the most commonly observed treatment-emergent adverse events associated with the use of XENICAL in the seven double-blind, placebo-controlled clinical trials and are primarily a manifestation of the mechanism of action. (Commonly observed is defined as an incidence of ≥5% and an incidence in the XENICAL 120 mg group that is at least twice that of placebo.) Table 2 Commonly Observed Adverse Events Adverse Event Year 1 Year 2 XENICAL Treatment designates XENICAL three times a day plus diet or placebo plus diet % Patients (N=1913) Placebo % Patients (N=1466) XENICAL % Patients (N=613) Placebo % Patients (N=524) Oily…
Warnings
Important safety information
XENICAL has drug interactions and can decrease vitamin absorption. ( 5.1 , 7 ) Take a multivitamin supplement that contains fat-soluble vitamins to ensure adequate nutrition. ( 5.1 ) Rare cases of severe liver injury with hepatocellular necrosis or acute hepatic failure have been reported. ( 5.2 ) Patients may develop oxalate nephrolithiasis and oxalate nephropathy following treatment with XENICAL. Monitor renal function in patients at risk for renal insufficiency. Discontinue XENICAL if oxalate nephropathy develops. ( 5.3 ) Substantial weight loss can increase the risk of cholelithiasis. ( 5.4 ) Exclude organic causes of obesity (eg, hypothyroidism) before prescribing XENICAL. ( 5.5 ) Gastrointestinal events may increase when XENICAL is taken with a diet high in fat (>30% total daily calories from fat). ( 5.5 ) 5.1 Drug Interactions and Decreased Vitamin Absorption XENICAL may interact with concomitant drugs including cyclosporine, levothyroxine, warfarin, amiodarone, antiepileptic drugs, and antiretroviral drugs [see Drug Interactions (7) ]. Data from a XENICAL and cyclosporine drug interaction study indicate a reduction in cyclosporine plasma levels when XENICAL was coadministered with cyclosporine. Therefore, XENICAL and cyclosporine should not be simultaneously coadministered. To reduce the chance of a drug-drug interaction, cyclosporine should be taken at least 3 hours before or after XENICAL in patients taking both drugs. In addition, in those patients whose cyclosporine levels are being measured, more frequent monitoring should be considered. Patients should be strongly encouraged to take a multivitamin supplement that contains fat-soluble vitamins to ensure adequate nutrition because XENICAL has been shown to reduce the absorption of some fat-soluble vitamins and beta-carotene [see Dosage and Administration (2) , and Adverse Reactions (6.1) ] . In addition, the levels of vitamin D and beta-carotene may be low in obese patients compared with non-obese subjects. The supplement should be taken once a day at least 2 hours before or after the administration of XENICAL, such as at bedtime. Weight-loss may affect glycemic control in patients with diabetes mellitus. A reduction in dose of oral hypoglycemic medication (e.g., sulfonylureas) or insulin may be required in some patients [see Clinical Studies (14) ] . 5.2 Liver Injury There have been rare postmarketing reports of severe liver injury with hepatocellular necrosis or acute hepatic failure in patients treated with XENICAL, with some of these cases resulting in liver transplant or death. Patients should be instructed to report any symptoms of hepatic dysfunction (anorexia, pruritus, jaundice, dark urine, light-colored stools, or right upper quadrant pain) while taking XENICAL. When these symptoms occur, XENICAL and other suspect medications should be discontinued immediately and liver function tests and ALT and AST levels obtained. 5.3 Oxalate Nephrolithiasis and Oxalate Nephropathy with Renal Failure Some patients may develop increased levels of urinary oxalate following treatment with XENICAL. Cases of oxalate nephrolithiasis and oxalate nephropathy with renal failure have been reported. Monitor renal function when prescribing XENICAL to patients at increased risk for oxalate nephropathy, including patients with renal impairment and in those with a history of hyperoxaluria or calcium oxalate nephrolithiasis. Discontinue XENICAL in patients who develop oxalate nephropathy. 5.4 Cholelithiasis Substantial weight loss can increase the risk of cholelithiasis. In a clinical trial of XENICAL for the prevention of type 2 diabetes, the rates of cholelithiasis as an adverse event were 2.9% (47/1649) for patients randomized to XENICAL and 1.8% (30/1655) for patients randomized to placebo. 5.5 Miscellaneous Organic causes of obesity (e.g., hypothyroidism) should be excluded before prescribing XENICAL. Patients should be advised to adhere to dietary guidelines [see Dosage and Administration (2) ] . Gastrointestinal events [see Adverse Reactions (6.1) ] may increase when XENICAL is taken with a diet high in fat (>30% total daily calories from fat). The daily intake of fat should be distributed over three main meals. If XENICAL is taken with any one meal very high in fat, the possibility of gastrointestinal effects increases.
Who should not take Xenical
XENICAL is contraindicated in: Pregnancy [see Use in Specific Populations (8.1) ] Patients with chronic malabsorption syndrome Patients with cholestasis Patients with known hypersensitivity to XENICAL or to any component of this product Pregnancy ( 4 , 8.1 ) Chronic malabsorption syndrome ( 4 ) Cholestasis ( 4 ) Known hypersensitivity to XENICAL or to any component of this product ( 4 )
Overdose — what happens if you take too much
Single doses of 800 mg XENICAL and multiple doses of up to 400 mg three times a day for 15 days have been studied in normal weight and obese subjects without significant adverse findings. Should a significant overdose of XENICAL occur, it is recommended that the patient be observed for 24 hours. Based on human and animal studies, systemic effects attributable to the lipase-inhibiting properties of XENICAL should be rapidly reversible.
U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.
Interactions
Cyclosporine: Reduction in cyclosporine plasma levels was observed when XENICAL was coadministered with cyclosporine. ( 7.1 ) Fat-soluble Vitamin Supplements and Analogues: All patients should take a daily multivitamin that contains vitamins A, D, E, K, and beta-carotene. ( 7.2 ) Levothyroxine: Patients treated concomitantly with XENICAL and levothyroxine should be monitored for changes in thyroid function. ( 7.3 ) Warfarin: Patients on chronic stable doses of warfarin who are prescribed XENICAL should be monitored closely for changes in coagulation parameters. ( 7.4 ) Amiodarone: A reduction in exposure to amiodarone was observed when XENICAL was co-administered. ( 7.5 ) Antiepileptic Drugs: Convulsions have been reported in patients taking XENICAL with antiepileptic drugs. Patients should be monitored for possible changes in frequency or severity of convulsions. ( 7.6 ) Antiretroviral Drugs: Loss of virological control has been reported in HIV-infected patients. Patients should be monitored frequently for changes in HIV RNA levels. ( 7.7 ) 7.1 Cyclosporine Data from a XENICAL and cyclosporine drug interaction study indicate a reduction in cyclosporine plasma levels when XENICAL was coadministered with cyclosporine. XENICAL and cyclosporine should not be simultaneously coadministered. Cyclosporine should be administered 3 hours after the administration of XENICAL [see Dosage and Administration (2) , and Warnings and Precautions (5.1) ] . 7.2 Fat-soluble Vitamin Supplements and Analogues Data from a pharmacokinetic interaction study showed that the absorption of beta-carotene supplement is reduced when concomitantly administered with XENICAL. XENICAL inhibited absorption of a vitamin E acetate supplement. The effect of XENICAL on the absorption of supplemental vitamin D, vitamin A, and nutritionally-derived vitamin K is not known at this time [see Clinical Pharmacology (12.3) , and Warnings and Precautions (5.1) ] . 7.3 Levothyroxine Hypothyroidism has been reported in patients treated concomitantly with XENICAL and levothyroxine postmarketing. Patients treated concomitantly with XENICAL and levothyroxine should be monitored for changes in thyroid function. Administer levothyroxine and XENICAL at least 4 hours apart [see Dosage and Administration (2) ] . 7.4 Anticoagulants including Warfarin Vitamin K absorption may be decreased with XENICAL. Reports of decreased prothrombin, increased INR and unbalanced anticoagulant treatment resulting in change of hemostatic parameters have been reported in patients treated concomitantly with XENICAL and anticoagulants. Patients on chronic stable doses of warfarin or other anticoagulants who are prescribed XENICAL should be monitored closely for changes in coagulation parameters [see Clinical Pharmacology (12.3) ] . 7.5 Amiodarone A pharmacokinetic study, where amiodarone was orally administered during orlistat treatment, demonstrated a reduction in exposure to amiodarone and its metabolite, desethylamiodarone [see Clinical Pharmocology (12.3) ] . A reduced therapeutic effect of amiodarone is possible. The effect of commencing orlistat treatment in patients on stable amiodarone therapy has not been studied. 7.6 Antiepileptic Drugs Convulsions have been reported in patients treated concomitantly with orlistat and antiepileptic drugs. Patients should be monitored for possible changes in the frequency and/or severity of convulsions. 7.7 Antiretroviral Drugs Loss of virological control has been reported in HIV-infected patients taking orlistat concomitantly with antiretroviral drugs such as atazanavir, ritonavir, tenofovir disoproxil fumarate, emtricitabine, and with the combinations lopinavir/ritonavir and emtricitabine/efavirenz/tenofovir disoproxil fumarate. The exact mechanism for this is unclear, but may include a drug-drug interaction that inhibits systemic absorption of the antiretroviral drug. HIV RNA levels should be frequently monitored in patients who take XENICAL while being treated for HIV infection. If there is a confirmed increase in HIV viral load, XENICAL should be discontinued.
Xenical vs other weight-loss medications
How does Xenical compare with every other FDA-approved weight-loss option — injection vs pill, what each is really approved for, and the average weight loss its own trial reported?
May treat (source: NIH RxClass)
Dosage forms
Capsule
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
A same-class option may cost less. See alternatives →
Frequently asked questions
- What does Xenical treat?
- Xenical (Orlistat) may be used to treat obesity, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- How much does Xenical cost?
- Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $207.04 for 30, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.
- Is there a coupon or discount for Xenical?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Xenical. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Xenical?
- Xenical is marketed by Cheplapharm. You can see Cheplapharm's full profile, rating, and other products on pharmaranks.
- Is Xenical a brand-name or generic drug?
- Xenical is a brand-name product with the active ingredient Orlistat.
- Is Xenical available over the counter?
- No. Xenical is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Xenical come in?
- Xenical is currently marketed as capsule, per the FDA's National Drug Code Directory.
- Is Xenical FDA-registered?
- Xenical is on record with the U.S. FDA under application number NDA020766. You can verify this on its official FDA label.
- Is Xenical safe?
- There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Xenical. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
- What are the side effects of Xenical?
- Xenical's side effects are taken directly from its FDA label. From the label: Most common treatment emergent adverse reactions (≥5% and at least twice that of placebo) include oily spotting, flatus with discharge, fecal urgency, fatty/oily stool, oily evacuation, increased defecation and fecal incontinence. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS,… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.
Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
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