Losartan potassium
Lozap 50 contains the active substance – losartan. Losartan belongs to a group of medicines called angiotensin II receptor antagonists. Angiotensin II is a substance produced in the body that binds to receptors in the walls of blood vessels, causing them to narrow. This results in increased blood pressure. Losartan prevents angiotensin II from binding to these receptors, causing the blood vessels to widen, which in turn reduces blood pressure. Losartan slows down the deterioration of kidney function in patients with high blood pressure and type 2 diabetes.
Lozap 50 is used:
Before starting treatment with Lozap 50, the doctor or pharmacist should be consulted.
The doctor should be informed if the patient thinks she is pregnant (or may become pregnant). Lozap 50 is not recommended in early pregnancy and should not be taken by pregnant women after the third month of pregnancy, as it may seriously harm the baby if taken at this stage of pregnancy (see section "Pregnancy").
It is important to inform the doctor before taking Lozap 50:
Studies have been conducted on the use of losartan in children. For more information, the doctor should be consulted.
Lozap 50 is not recommended for children with kidney or liver problems due to limited data available in this patient group. Lozap 50 is not recommended for children under 6 years of age, as its effectiveness has not been demonstrated in this age group.
The doctor or pharmacist should be informed about all medicines currently being taken or recently taken, as well as any medicines that the patient plans to take.
The doctor should be informed about any potassium supplements, salt substitutes containing potassium, potassium-sparing diuretics (e.g., amiloride, triamterene, spironolactone), or other medicines that may increase potassium levels in the blood (e.g., heparin, trimetoprim-containing medicines), as their concurrent use with Lozap 50 is not recommended.
Particular caution should be exercised when taking the following medicines during treatment with Lozap 50:
The doctor may recommend a dose change and/or take other precautions:
Without close medical supervision, medicines containing lithium should not be taken in combination with losartan.
Special precautions (e.g., blood tests) may be necessary.
If the patient experiences abdominal pain, nausea, vomiting, or diarrhea after taking Lozap 50, they should consult their doctor. The doctor will decide on further treatment. The patient should not stop taking Lozap 50 on their own.
Lozap 50 can be taken with or without food.
Grapefruit juice should be avoided during treatment with Lozap 50.
In pregnancy, during breastfeeding, or if pregnancy is suspected, or if the patient is planning to become pregnant, the doctor or pharmacist should be consulted before taking this medicine.
Pregnancy
The doctor should be informed if the patient suspects (or plans) to become pregnant. The doctor will usually recommend stopping Lozap 50 before planned pregnancy or immediately after confirming pregnancy and recommend taking another medicine instead of Lozap 50. Lozap 50 is not recommended in early pregnancy and should not be taken after the third month of pregnancy, as it may seriously harm the baby if taken at this stage of pregnancy.
Breastfeeding
The doctor should be informed if the patient is breastfeeding or plans to breastfeed. Lozap 50 is not recommended during breastfeeding, especially in newborns or premature babies. The doctor may recommend another medicine.
No studies have been conducted on the effect of the medicine on the ability to drive and use machines. However, like many other medicines used to treat high blood pressure, Lozap 50 may cause dizziness or drowsiness in some people. If dizziness or drowsiness occurs, the patient should consult their doctor before performing such activities.
This medicine should always be taken as directed by the doctor. In case of doubts, the doctor or pharmacist should be consulted.
The doctor will determine the appropriate dose of Lozap 50, depending on the patient's condition and the use of other medicines. It is essential to continue taking Lozap 50 for as long as the doctor recommends to maintain consistent blood pressure control.
Adult patients with high blood pressure
Treatment usually starts with a dose of 50 mg of losartan (one Lozap 50 tablet) once a day.
The maximum blood pressure-lowering effect should occur within 3 to 6 weeks after starting treatment. In some patients, the doctor may then increase the dose to 100 mg of losartan (two Lozap 50 tablets) once a day.
If the patient feels that the effect of losartan is too strong or too weak, they should consult their doctor or pharmacist.
Children under 6 years of age
Lozap 50 is not recommended for children under 6 years of age, as its effectiveness has not been demonstrated in this age group.
Children from 6 to 18 years of age
The recommended initial dose for patients weighing between 20 and 50 kg is 0.7 mg of losartan per kg of body weight, given once daily (up to 25 mg of Lozap 50). The doctor may increase the dose if blood pressure is not controlled.
Adult patients with high blood pressure and type 2 diabetes
Treatment usually starts with a dose of 50 mg of losartan (one Lozap 50 tablet) once a day.
The doctor may then increase the dose to 100 mg of losartan (two Lozap 50 tablets) once a day, depending on changes in blood pressure.
Lozap 50 tablets can be taken with other blood pressure-lowering medicines (e.g., diuretics, calcium channel blockers, alpha- or beta-blockers) and with insulin and other commonly used medicines to lower blood sugar levels (e.g., sulfonylurea derivatives, glitazones, and glucose inhibitors).
Adult patients with heart failure
Treatment usually starts with a dose of 12.5 mg of losartan once a day.
The doctor will usually gradually increase the dose at weekly intervals (i.e., 12.5 mg per day during the first week, 25 mg per day during the second week, 50 mg per day during the third week, 100 mg per day during the fourth week, 150 mg per day during the fifth week), until the maintenance dose determined by the doctor is reached. The maximum dose of losartan 150 mg (e.g., three Lozap 50 tablets) may be taken once a day. In the treatment of heart failure, losartan is usually taken in combination with diuretics (medicines that increase the amount of water excreted by the kidneys) and/or digitalis glycosides (medicines that strengthen the heart and increase its efficiency) and/or beta-blockers.
The doctor may recommend a lower dose, especially when starting treatment in certain patients, such as those taking high doses of diuretics, patients with liver function disorders, or patients over 75 years of age. Losartan is not recommended for patients with severe liver function disorders (see section "When not to take Lozap 50").
The tablets should be swallowed with a glass of water. It is essential to try to take the medicine at the same time every day. The patient should continue taking Lozap 50 for as long as the doctor recommends.
A Lozap 50 tablet can be divided into equal doses.
In case of accidental ingestion of too many tablets, the doctor should be contacted immediately. Symptoms of overdose are low blood pressure, rapid heart rate, and possible slow heart rate.
In case of missing a daily dose, the next dose should be taken at the usual time. A double dose should not be taken to make up for the missed tablet.
In case of any further doubts about taking this medicine, the doctor or pharmacist should be consulted.
Like all medicines, Lozap 50 can cause side effects, although not everybody gets them.
In case of the following symptoms, the patient should stop taking Lozap 50 and consult their doctor or go to the emergency department of the nearest hospital immediately:
Severe allergic reaction (rash, itching, swelling of the face, lips, mouth, or throat, which can cause difficulty swallowing or breathing).
This is a severe but rare side effect that may occur in up to 1 in 1,000 patients. Emergency medical attention or hospitalization may be necessary.
The following side effects have been reported for losartan:
Common (may occur in up to 1 in 10 patients):
Uncommon (may occur in up to 1 in 100 patients):
Rare (may occur in up to 1 in 1,000 patients):
Unknown (frequency cannot be estimated from available data):
Side effects in children are similar to those observed in adults.
If any side effects occur, including any side effects not mentioned in the leaflet, the doctor, pharmacist, or nurse should be informed. Side effects can be reported directly to the Department of Monitoring of Adverse Reactions to Medicinal Products, Office for Registration of Medicinal Products, Medical Devices, and Biocidal Products.
Al. Jerozolimskie 181 C, 02-222 Warsaw, Tel.: +48 22 49 21 301, Fax: +48 22 49 21 309, website: https://smz.ezdrowie.gov.pl
By reporting side effects, more information can be gathered on the safety of the medicine.
The medicine should be stored out of sight and reach of children.
Do not use this medicine after the expiry date stated on the carton. The expiry date refers to the last day of that month.
Store in a temperature below 30°C. Store in the original packaging to protect from light.
Medicines should not be disposed of via wastewater or household waste. The pharmacist should be asked how to dispose of medicines that are no longer needed. This will help protect the environment.
The active substance is losartan potassium.
Each tablet contains 50 mg of losartan potassium.
In addition, the medicine contains:
Core: microcrystalline cellulose, mannitol, crospovidone, colloidal anhydrous silica, talc, magnesium stearate;
Coating: Album Sepifilm 752 [hypromellose, microcrystalline cellulose, macrogol 2000 stearate, titanium dioxide], macrogol 6000.
White or almost white, oval, biconvex, film-coated tablets with a score line on both sides (approximately 11.0 x 5.5 mm). The tablet can be divided into equal doses.
Packaging contains 30, 60, or 90 film-coated tablets.
Zentiva, a.s., Einsteinova 24, 851 01 Bratislava, Slovak Republic
Zentiva k.s., U kabelovny 130, Dolní Měcholupy, 102 37 Prague 10, Czech Republic.
Zentiva Polska Sp. z o.o.
ul. Bonifraterska 17
00-203 Warsaw
Tel: +48 22 375 92 00
Date of last revision of the leaflet:January 2025
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