Singulair and Errin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Singulair (montelukast sodium) and Errin (norethindrone). Common drug interactions include cholecystitis chronic among females.

The phase IV clinical study analyzes what interactions people have when they take Singulair and Errin. It is created by eHealthMe based on reports of 15 people who take the same drugs from the FDA, and is updated regularly.

What is Singulair?

Singulair has active ingredients of montelukast sodium. It is often used in asthma. eHealthMe is studying from 129,752 Singulair users. Check the latest studies of Singulair.

What is Errin?

Errin has active ingredients of norethindrone. It is often used in birth control. eHealthMe is studying from 336 Errin users. Check the latest studies of Errin.

On Jul, 26, 2026

15 people who take Singulair and Errin together, and have interactions are studied.

What are the common drug interactions of Singulair and Errin, by gender? *:

female:

Cholecystitis chronic (long lasting infection of gallbladder)
Gallbladder disorder
Arthralgia (joint pain)
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Arthropathy
Cardiac function disturbance postoperative
Contusion (a type of hematoma of tissue in which capillaries)
Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
Disease recurrence
Dizziness

male:

n/a

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Cholecystitis chronic (long lasting infection of gallbladder)
Gallbladder disorder
Gallbladder injury
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
Heart rate increased
Heart rate irregular
Loss of consciousness

30-39:

Insomnia (sleeplessness)
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Contusion (a type of hematoma of tissue in which capillaries)
Disease recurrence
Dysphemia (stammering or stuttering)
Eating disorder
Injection site erythema (redness at injection site)
Injection site pruritus (severe itching at injection site)
Rib fracture
Road traffic accident

40-49:

Hypoaesthesia (reduced sense of touch or sensation)
Ovarian cyst (fluid filled sac of the ovary)
Knee arthroplasty
Mass
Muscle spasms (muscle contraction)
Muscular weakness (muscle weakness)
Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves)
Musculoskeletal stiffness (stiffness of the body's muscles, joints, tendons, ligaments and nerves)
Oedema (fluid collection in tissue)
Pain

50-59:

n/a

60+:

n/a

What are the existing conditions these people have? *

Insomnia (sleeplessness): 3 people, 20.00%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 3 people, 20.00%
Hypersensitivity: 2 people, 13.33%
Hyperlipidaemia (presence of excess lipids in the blood): 1 person, 6.67%
Attention Deficit Hyperactivity Disorder (a chronic condition including attention difficulty, hyperactivity, and impulsiveness): 1 person, 6.67%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 1 person, 6.67%
Depression: 1 person, 6.67%
Drowsiness: 1 person, 6.67%
Endometriosis (appearance of endometrial tissue outside the uterus and causing pelvic pain): 1 person, 6.67%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 1 person, 6.67%

* Approximation only. Some reports may have incomplete information.

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