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

Summary:

Drug interactions are reported among people who take Qualaquin (quinine sulfate) and Ergocalciferol (ergocalciferol). Common drug interactions include arthralgia among females and dyspnoea among males.

The phase IV clinical study analyzes what interactions people have when they take Qualaquin and Ergocalciferol. It is created by eHealthMe based on reports of 17 people who take the same drugs from the FDA, and is updated regularly.

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.

What is Ergocalciferol?

Ergocalciferol has active ingredients of ergocalciferol. It is often used in rickets. eHealthMe is studying from 32,652 Ergocalciferol users. Check the latest studies of Ergocalciferol.

On Jul, 26, 2026

17 people who take Qualaquin and Ergocalciferol together, and have interactions are studied.

Qualaquin and Ergocalciferol drug interactions.

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

female:

Arthralgia (joint pain)
Cataract (clouding of the lens inside the eye)
Drug ineffective
Fibromyalgia (a long-term condition which causes pain all over the body)
Herpes zoster
Immune system disorder
Joint swelling
Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
Oedema peripheral (superficial swelling)
Pain

male:

Dyspnoea (difficult or laboured respiration)
Abdominal pain
Head injury
Lacrimation increased
Nephrolithiasis (calculi in the kidneys)
Peripheral coldness
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Somnolence (a state of near-sleep, a strong desire for sleep)
Suicidal ideation
Abnormal behaviour

What are the common drug interactions of Qualaquin and Ergocalciferol, 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:

Oedema peripheral (superficial swelling)
Pain
Thyroid neoplasm (tumour of thyroid)
Affective disorder (mental disorder)
Depression
Feeling hot
Head injury
Lacrimation increased
Peripheral coldness
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)

50-59:

n/a

60+:

Gastrointestinal disorder (functional problems of gastrointestinal tract)
Hypocalcaemia (levels of calcium in blood serum are abnormally low)

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 11 people, 64.71%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 4 people, 23.53%
Hot Flush (sudden feelings of heat): 4 people, 23.53%
Muscle Contractions Involuntary (uncontrolled muscle contraction): 2 people, 11.76%
High Blood Pressure: 2 people, 11.76%
Head Injury: 2 people, 11.76%
Depression: 2 people, 11.76%
Back Pain: 2 people, 11.76%
Osteoporosis (bones weak and more likely to break): 1 person, 5.88%
Drowsiness: 1 person, 5.88%

* Approximation only. Some reports may have incomplete information.

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