Side effects of losartan hydrochlorothiazide

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Side Effects of Losartan Hydrochlorothiazide

Common Side Effects of Losartan Hydrochlorothiazide

Losartan, an angiotensin II receptor antagonist, and hydrochlorothiazide, a thiazide diuretic, are often combined to treat hypertension. This combination is generally well-tolerated, but like all medications, it can cause side effects. The most frequently reported side effects include headache, dizziness, fatigue, and upper respiratory infections Goldberg1995MacKay1996Goldberg1995. These side effects are generally mild and occur at a similar rate to those experienced by patients taking a placebo Goldberg1995MacKay1996.

Dizziness and Fatigue

Dizziness is one of the most common side effects associated with losartan hydrochlorothiazide, reported by approximately 14.1% of patients Goldberg1995MacKay1996Goldberg1995. This side effect is considered drug-related more often in patients treated with losartan compared to those receiving a placebo . Fatigue or asthenia is another common side effect, affecting around 3.8% of patients Goldberg1995MacKay1996.

Respiratory Issues

Upper respiratory infections and sinusitis are also reported by patients taking losartan hydrochlorothiazide, with an incidence rate of about 6.5% Goldberg1995MacKay1996. These respiratory issues are generally mild and do not usually require discontinuation of the medication Goldberg1995MacKay1996.

Cough

A dry cough is a less common side effect, occurring in about 3.1% of patients Goldberg1995Naidoo1999. This is significantly lower than the incidence of cough in patients treated with angiotensin-converting enzyme (ACE) inhibitors, where the rate is around 8.8% Goldberg1995Naidoo1999.

Hypotension and Withdrawal Effects

First-dose hypotension is rare with losartan hydrochlorothiazide, and withdrawal effects such as rebound hypertension have not been observed in clinical trials . This makes the combination a safer option for long-term management of hypertension.

Laboratory Findings

No unexpected or clinically significant laboratory adverse experiences have been reported with losartan hydrochlorothiazide Goldberg1995Goldberg1995. The combination does not significantly affect serum potassium levels, which is a common concern with thiazide diuretics .

Comparison with Other Antihypertensive Agents

When compared to other antihypertensive agents like enalapril and amlodipine, losartan hydrochlorothiazide has a better tolerability profile. The incidence of drug-related adverse effects and patient withdrawal from therapy is lower with losartan hydrochlorothiazide Naidoo1999Dahlöf1997. Additionally, losartan hydrochlorothiazide does not significantly increase serum uric acid levels, unlike enalapril .

Conclusion

Losartan hydrochlorothiazide is generally well-tolerated with a side effect profile that includes dizziness, fatigue, upper respiratory infections, and occasional cough. These side effects are typically mild and occur at rates similar to those seen with placebo. The combination is safer in terms of hypotension and withdrawal effects and has a favorable laboratory safety profile. Compared to other antihypertensive agents, losartan hydrochlorothiazide offers better tolerability and fewer adverse effects, making it a viable option for long-term hypertension management.

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Most relevant research papers on this topic

Safety and tolerability of losartan potassium, an angiotensin II receptor antagonist, compared with hydrochlorothiazide, atenolol, felodipine ER, and angiotensin-converting enzyme inhibitors for the treatment of systemic hypertension.

Losartan potassium is an effective and well-tolerated treatment for systemic hypertension, with a better tolerability profile than other antihypertensive agents.

Highly Cited

1995·

273citations

·A. Goldberg et al.

The American journal of cardiology·

DOI

Losartan and low-dose hydrochlorothiazide in patients with essential hypertension. A double-blind, placebo-controlled trial of concomitant administration compared with individual components.

Concomitant administration of 50 mg losartan potassium and 12.5 mg hydrochlorothiazide once daily effectively reduces blood pressure and is well-tolerated in patients with essential hypertension.

RCTLarge Human TrialHighly Cited

1996·

151citations

·James H. MacKay et al.

Archives of internal medicine·

DOI

Effects of losartan on a background of hydrochlorothiazide in patients with hypertension.

Losartan combined with hydrochlorothiazide effectively reduces blood pressure in hypertensive patients, with a dose-response relationship observed in this patient population.

RCTLarge Human TrialHighly Cited

1995·

149citations

·B. Soffer et al.

Hypertension·

DOI

Increased efficacy and tolerability with losartan plus hydrochlorothiazide in patients with uncontrolled hypertension and therapy-related symptoms receiving two monotherapies.

Losartan 100 mg/HCTZ 25 mg improves blood pressure control and reduces side effects in patients with moderate to severe hypertension.

RCT

1999·

21citations

·D. Naidoo et al.

Advances in therapy

Efficacy and safety of losartan.

Losartan is an effective and well-tolerated antihypertensive agent, with a smooth antihypertensive profile and similar effects to other drugs, with dizziness being the most common adverse experience.

RCTLarge Human Trial

1995·

18citations

·A. Goldberg et al.

The Canadian journal of cardiology

Compare of losartan and benazepril therapy respeclively combined with hydrochlorothiazide in treating senile hypertension

Losartan and benazepril both effectively treat senile hypertension, but losartan has a better safety and tolerability profile.

RCT

2004·

0citations

·Wang Ai-bo

Chinese Journal of cardiovascular Rehabilitation Medicine

Main results of the losartan versus amlodipine (LOA) study on drug tolerability and psychological general well‐being

Losartan and amlodipine effectively lower blood pressure, but amlodipine has higher drug-related adverse effects and withdrawal rates.

RCTLarge Human Trial

1997·

58citations

·B. Dahlöf et al.

Journal of Hypertension·

DOI

Antihypertensive Efficacy and Safety of Fixed-Dose Combination Therapy with Losartan plus Hydrochlorothiazide in Japanese Patients with Essential Hypertension

Fixed-dose combination therapy with losartan 50 mg plus hydrochlorothiazide 12.5 mg is well-tolerated and more effective in lowering blood pressure than monotherapy in Japanese hypertensive patients.

RCT

2007·

34citations

·T. Saruta et al.

Hypertension Research·

DOI

[PP.35.12]: EFFECTS OF HYDROCHLOROTHIAZIDE AND INDAPAMIDE COMBINED WITH LOSARTAN ON RENAL FUNCTION AND ARTERIAL STIFFNESS IN ELDERLY HYPERTENSIVE PATIENTS

Indapamide combined with losartan can protect renal function and reduce vascular stiffness more effectively than hydrochlorothiazide combined with losartan in elderly hypertensive patients.

RCTRigorous Journal

2015·

0citations

·X. Chen et al.

Journal of Hypertension·

DOI

Effect of losartan and hydrochlorothiazide on exercise tolerance in exertional hypertension and left ventricular diastolic dysfunction.

Losartan improves exercise tolerance and quality of life in patients with diastolic dysfunction and hypertensive responses to exercise, while hydrochlorothiazide does not.

RCT

2006·

53citations

·W. Little et al.

The American journal of cardiology·

DOI

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