LOSARTAN POTASSIUM

Posology Hypertension The usual starting and maintenance dose is 50 mg once daily for most patients. The maximal antihypertensive effect is attained 3-6 weeks after initiation of therapy. Some patients may receive an additional benefit by increasing the dose to 100 mg once daily (in the morning).

g. 1). 5g/ day The usual starting dose is 50mg once daily. The dose may be increased to 100mg once daily based on blood pressure response from one month onwards after initiation of therapy. g. g. sulfonylureas, glitazones and glucosidase inhibitors).

Reduction in the risk of stroke in hypertensive patients with left ventricular hypertrophy documented by ECG The usual starting dose is 50 mg of Losartan once daily. A low dose of hydrochlorothiazide should be added and/ or the dose of Losartan should be increased to 100 mg once daily based on blood pressure response.

5mg once daily. e. 5mg daily, 25mg daily, 50mg daily, 100 mg daily, up to a maximum dose of 150 mg once daily) as tolerated by the patient. g. 4). Use in patients with renal impairment and haemodialysis patients No initial dosage adjustment is necessary in patients with renal impairment or in haemodialysis patients.

Use in patients with hepatic impairment A lower dose should be considered for patients with a history of hepatic impairment. There is no therapeutic experience in patients with severe hepatic impairment. 4).

Use in the elderly:

Patients up to 75 years: No initial dosage adjustment is necessary for this group of patients.

Patients over 75 years:

Although consideration should be given to initiating therapy with 25mg in patients over 75 years of age, dosage adjustment is not usually necessary for the elderly. 6 months − less than 6 years The safety and efficacy of children aged 6 months to less than 6 years has not been established.

1). 2). 6 years to 18 years For patients who can swallow tablets, the recommended dose is 25 mg once daily in patients > 20 to < 50 kg. In exceptional cases, the dose can be increased to a maximum of 50 mg once daily. Dosage should be adjusted according to blood pressure response In patients >50 kg, the starting dose is 50 mg once daily.

In exceptional cases the dose can be adjusted to a maximum of 100 mg once daily. 4mg/kg (or in excess of 100mg) daily have not been studies in paediatric patients. Losartan is not recommended for use in children under 6 years of age, as limited data are available in this patient group.

4). 4). Method of administration Losartan should be swallowed with a glass of water. Losartan may be administered with or without food.

1) In these clinical trials, the most common adverse reaction was dizziness. The frequency of adverse advents listed below is defined using the following convention: Very common (≥1/10) Common (≥1/100, to < 1/10) Uncommon (≥ 1/1000, to < 1/100) Rare (≥ 1/10,000, to < 1/1000) Very rare (<1/10,000) Not known (cannot be estimated from the available data) Table 1.

g. patients with severe heart failure or under treatment with high dose diuretics. 4) Paediatric Population The adverse experience profile for paediatric patients appears to be similar to that seen in adult patients. Data in the paediatric population are limited.

Reporting of suspected adverse reactions Reporting suspected adverse reactions after authorization of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store

8).

Hypotension and electrolyte/fluid imbalance:

Symptomatic hypotension, especially after the first dose and after increasing of the dose, may occur in patients who are volume- and/ or sodium- depleted by vigorous diuretic therapy, dietary salt restriction, diarrhoea or vomiting.

2). This also applies to children 6 to 18 years of age. Electrolyte imbalances Electrolyte imbalances are common in patients with renal impairment, with or without diabetes, and should be addressed. 8 ‘Hypertension and type 2 diabetes with renal disease- Investigations’ and ‘Post- marketing experience Investigations’).

Therefore, the plasma concentrations of potassium as well as creatinine clearance values should be closely monitored, especially patients with heart failure and a creatinine clearance between 30-50ml/ min should be closely monitored.

5).

Hepatic impairment:

Based on pharmacokinetic data which demonstrate significantly increased plasma concentrations of losartan in cirrhotic patients, a lower dose should be considered for patients with a history of hepatic impairment. There is no therapeutic experience with losartan in patients with severe hepatic impairment.

2). 2).

Renal impairment:

As a consequence of inhibiting the renin-angiotensin-aldosterone system, changes in renal function including renal failure have been reported (in particular, in patients whose renal function is dependent on the renin-angiotensin-aldosterone system such as those with severe cardiac insufficiency or pre-existing renal dysfunction).

As with other drugs that affect the renin-angiotensin-aldosterone system, increases in blood urea and serum creatinine have also been reported in patients with bilateral renal artery stenosis or stenosis of the artery to a solitary kidney; these changes in renal function may be reversible upon discontinuation of therapy.

Losartan should be used with caution in patients with bilateral renal artery stenosis or stenosis of the artery to a solitary kidney. 2). Renal function should be regularly monitored during treatment with losartan as it may deteriorate.

This applies particularly when losartan is given in the presence of other conditions (fever, dehydration) likely to impair renal function. Concomitant use of losartan and ACE- inhibitors has shown to impair renal function. 5). Renal Transplantation There is no experience in patients with recent kidney transplantation.

Primary hyperaldosteronism Patients with primary aldosteronism generally will not respond to antihypertensive drugs acting through inhibition of the renin-angiotensin system. Therefore, the use of losartan tablets is not recommended.

Coronary heart disease and cerebrovascular disease As with any antihypertensive agents, excessive blood pressure decrease in patients with ischaemic cardiovascular and cerebrovascular disease could result in a myocardial infarction or stroke.

Heart failure In patients with heart failure, with or without renal impairment, there is- as with other drugs acting on the renin-angiotensin system- a risk of severe arterial hypotension, and (often acute) renal impairment. There is no sufficient therapeutic experience with losartan in patients with heart failure and concomitant severe renal impairment, in patients with severe heart failure (NYHA class IV) as well as in patients with heart failure and symptomatic life threatening cardiac arrhythmias.

Therefore, losartan should be used with caution in these patient groups. 1). Aortic and mitral valve stenosis, obstructive hypertrophic cardiomyopathy As with other vasodilators, special caution is indicated in patients suffering from aortic or mitral stenosis, or obstructive hypertrophic cardiomyopathy.

Pregnancy Losartan should not be initiated during pregnancy. Unless continued losartan therapy is considered essential, patients planning pregnancy should be changed to alternative antihypertensive treatments which have an established safety profile for use in pregnancy.

6). Other warnings and precautions As observed for angiotensin converting enzyme inhibitors, losartan and other angiotensin antagonists are apparently less effective in lowering blood pressure in black people than in non- black people, possibly because of higher prevalence of low- renin states in the black hypertensive population.

Dual blockade of the renin-angiotensin-aldosterone system (RAAS) There is evidence that the concomitant use of ACE-inhibitors, angiotensin II receptor blockers or aliskiren increases the risk of hypotension, hyperkalaemia and […]

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