Miralax and Austedo drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Miralax (polyethylene glycol 3350) and Austedo (deutetrabenazine). Common drug interactions include anxiety among females and fall among males.

The phase IV clinical study analyzes what interactions people have when they take Miralax and Austedo. It is created by eHealthMe based on reports of 13 people who take the same drugs from the FDA, and is updated regularly.

What is Miralax?

Miralax has active ingredients of polyethylene glycol 3350. It is often used in constipation. eHealthMe is studying from 81,754 Miralax users. Check the latest studies of Miralax.

What is Austedo?

Austedo has active ingredients of deutetrabenazine. eHealthMe is studying from 4,141 Austedo users. Check the latest studies of Austedo.

On Jul, 18, 2026

13 people who take Miralax and Austedo together, and have interactions are studied.

What are the common drug interactions of Miralax and Austedo, by gender? *:

female:

Anxiety
Cardiac flutter (abnormal heart rhythm)
Compulsive lip biting (disorder of lip biting)
Drug ineffective
Dyspnoea (difficult or laboured respiration)
Electrocardiogram qt prolonged
Fatigue (feeling of tiredness)
Heart rate decreased
Heart rate irregular
Hypotension (abnormally low blood pressure)

male:

Fall
Irritability
Salivary hypersecretion (excess saliva secretion)
Somnolence (a state of near-sleep, a strong desire for sleep)
Balance disorder
Confusional state
Coronary artery bypass
Diarrhoea
Dizziness
Dysphagia (a condition in which swallowing is difficult or painful)

What are the common drug interactions of Miralax and Austedo, 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:

Abnormal behaviour
Agitation (state of anxiety or nervous excitement)
Anger
Fall
Irritability
Lethargy (tiredness)
Muscle spasms (muscle contraction)
Muscle spasticity (tight or stiff muscles and an inability to control those muscles)
Unresponsive to stimuli
Vomiting

50-59:

Salivary hypersecretion (excess saliva secretion)
Somnolence (a state of near-sleep, a strong desire for sleep)
Confusional state
Diarrhoea
Fatigue (feeling of tiredness)
Gait disturbance
Irritability
Mood altered (changes in mood)
Muscle twitching
Restless legs syndrome (a powerful urge to move your legs)

60+:

Heart rate decreased
Anxiety
Intestinal obstruction
Overdose
Pulmonary embolism (blockage of the main artery of the lung)
Cough
Dysphonia (speech disorder attributable to a disorder of phonation)
Coronary artery bypass
Dizziness
Headache (pain in head)

What are the existing conditions these people have? *

Tardive Dyskinesia (a disorder that involves involuntary movements): 7 people, 53.85%
Hypersensitivity: 2 people, 15.38%
Dyskinesia (abnormality or impairment of voluntary movement): 2 people, 15.38%
Salivary Hypersecretion (excess saliva secretion): 1 person, 7.69%
Infection: 1 person, 7.69%
Indigestion: 1 person, 7.69%
Chest Pain: 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

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