Losartan and Qualaquin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Losartan (losartan potassium) and Qualaquin (quinine sulfate). Common drug interactions include renal failure among females and chronic kidney disease among males.

The phase IV clinical study analyzes what interactions people have when they take Losartan and Qualaquin. It is created by eHealthMe based on reports of 12 people who take the same drugs from the FDA, and is updated regularly.

What is Losartan?

Losartan has active ingredients of losartan potassium. It is often used in high blood pressure. eHealthMe is studying from 177,686 Losartan users. Check the latest studies of Losartan.

What is Qualaquin?

Qualaquin has active ingredients of quinine sulfate. It is often used in leg pain. eHealthMe is studying from 281 Qualaquin users. Check the latest studies of Qualaquin.

On Jul, 14, 2026

12 people who take Losartan and Qualaquin together, and have interactions are studied.

Losartan and Qualaquin drug interactions.

What are the common drug interactions of Losartan and Qualaquin, by gender? *:

female:

Renal failure (kidney dysfunction)
Sepsis (a severe blood infection that can lead to organ failure and death)
Chronic kidney disease
Death
Nephrogenic anaemia (anaemia due to kidney disease)
Arthralgia (joint pain)
Hyperparathyroidism secondary (an abnormally high concentration of parathyroid hormone in the blood, resulting in weakening of the bones through loss of calcium-secondary)
Joint swelling
Oedema peripheral (superficial swelling)

male:

Chronic kidney disease
Tubulointerstitial nephritis (a form of nephritis affecting the interstitium of the kidneys surrounding the tubules)
Interstitial lung disease

What are the common drug interactions of Losartan and Qualaquin, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

n/a

60+:

Chronic kidney disease
Death
Nephrogenic anaemia (anaemia due to kidney disease)
Tubulointerstitial nephritis (a form of nephritis affecting the interstitium of the kidneys surrounding the tubules)
Arthralgia (joint pain)
Hyperparathyroidism secondary (an abnormally high concentration of parathyroid hormone in the blood, resulting in weakening of the bones through loss of calcium-secondary)
Interstitial lung disease
Joint swelling
Oedema peripheral (superficial swelling)
Renal failure (kidney dysfunction)

What are the existing conditions these people have? *

Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 9 people, 75.00%
Pain: 8 people, 66.67%
High Blood Cholesterol: 8 people, 66.67%
Infection: 8 people, 66.67%
Muscle Spasms (muscle contraction): 7 people, 58.33%
Swelling: 6 people, 50.00%
Fluid Retention (an abnormal accumulation of fluid in the blood): 6 people, 50.00%
Stress And Anxiety: 2 people, 16.67%
Asthma: 2 people, 16.67%
Depression: 2 people, 16.67%

* Approximation only. Some reports may have incomplete information.

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