Gastrointestinal symptoms
Patients should be advised to adhere to the dietary recommendations they are given (see section 4.2). The possibility of experiencing gastrointestinal symptoms (see section 4.8) may increase when orlistat is taken with an individual meal or a diet high in fat.
Fat-soluble vitamins
Treatment with orlistat may potentially impair the absorption of fat-soluble vitamins (A, D, E and K) (see section 4.5). For this reason, a multivitamin supplement should be taken at bedtime.
Antidiabetic medicinal products
As weight loss may be accompanied by improved metabolic control in diabetes, patients who are taking a medicinal product for diabetes should consult a doctor before starting treatment with alli, in case it is necessary to adjust the dose of the antidiabetic medicinal product.
Medicinal products for hypertension or hypercholesterolaemia
Weight loss may be accompanied by an improvement in blood pressure and cholesterol levels. Patients who are taking a medicinal product for hypertension or hypercholesterolaemia should consult a doctor or pharmacist when taking alli, in case it is necessary to adjust the dose of these medicinal products.
Amiodarone
Patients who are taking amiodarone should consult a doctor before starting treatment with alli (see section 4.5).
Rectal bleeding
Cases of rectal bleeding have been reported in patients taking orlistat. If this occurs, the patient should consult a doctor.
Oral contraceptives
The use of an additional contraceptive method is recommended to prevent possible failure of oral contraception that could occur in case of severe diarrhoea (see section 4.5).
Kidney disease
Patients with kidney disease should consult a doctor before starting treatment with alli, as the use of orlistat may be associated with hyperoxaluria and oxalate nephropathy leading sometimes to renal failure. This risk is increased in patients with underlying chronic kidney disease and/or volume depletion.
Levothyroxine
Hypothyroidism and/or reduced control of hypothyroidism may occur when orlistat and levothyroxine are co-administered (see section 4.5). Patients taking levothyroxine should consult a doctor before starting treatment with alli, as orlistat and levothyroxine may need to be taken at different times and the dose of levothyroxine may need to be adjusted.
Antiepileptic medicinal products
Patients taking an antiepileptic medicinal product should consult a doctor before starting treatment with alli, as they should be monitored for possible changes in the frequency and severity of convulsions. If this occurs, consideration could be given to administering orlistat and antiepileptic medicinal products at different times (see section 4.5).
Antiretrovirals for HIV
Patients should consult a physician before taking alli concomitantly with antiretroviral medicinal products. Orlistat may potentially reduce the absorption of antiretroviral medicinal products for HIV and could negatively affect the efficacy of antiretroviral medicinal products for HIV (see section 4.5).
Information concerning excipients
alli 60 mg hard capsules contain less than 1 mmol sodium (23 mg) per capsule, that is to say essentially 'sodium-free'.