What is Miralax used for?

Miralax is indicated for Constipation, Incomplete passage of stool, Red eye, Tear film insufficiency.

Miralax is developed by Braintree.

What development phase is Miralax in?

Miralax is FDA-approved (marketed).

What is the generic name of Miralax?

Macrogol is the generic (nonproprietary) name of Miralax.

Last reviewed 2026-04-20 · How we verify

Miralax (Macrogol)

Braintree · FDA-approved active Small molecule Quality 23/100

At a glance

Generic name	Macrogol
Sponsor	Braintree
Drug class	Osmotic Laxative [EPC]
Modality	Small molecule
Therapeutic area	Ophthalmology
Phase	FDA-approved
First approval	1984

Approved indications

Constipation
Incomplete passage of stool
Red eye
Tear film insufficiency

Common side effects

No common side effects on file.

Key clinical trials

A Study to Investigate Blinatumomab in Combination With Chemotherapy in Patients With Newly Diagnosed B-Lymphoblastic Leukemia (PHASE3)
Study of Olaparib in Metastatic Renal Cell Carcinoma Patients With DNA Repair Gene Mutations (PHASE2)
A Study Testing the Combination of Dasatinib or Imatinib to Chemotherapy Treatment With Blinatumomab for Children, Adolescents, and Young Adults With Philadelphia Chromosome Positive (Ph+) or ABL-Class Philadelphia Chromosome-Like (Ph-Like) B-cell Acute Lymphoblastic Leukemia (B-ALL) (PHASE2)
A Study in Healthy Men to Find Out How BI 425809 is Taken up and Handled by the Body (PHASE1)
A Study to Evaluate the Pharmacokinetics, Safety, and Effectiveness of Certolizumab Pegol in Children With Moderate to Severe Chronic Plaque Psoriasis (PHASE3)
The Efficacy and Palatability of Developed Polyethylene Glycol-based Formula for Children With Functional Constipation (NA)
Biologic Treatment Withdrawal in Takayasu Arteritis Patients in Sustained Remission (NA)
Pre-operative Polyethylene Glycol 3350 for Minimally Invasive Urogynecologic Surgery (PHASE4)

Patents

Patent	Expiry	Type

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

Source	Used for
FDA label	Mechanism, indications, dosing, boxed warnings, drug interactions
ClinicalTrials.gov	Trial enrolment, design, endpoints, results
FDA Orange Book	Patents + exclusivity

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

Miralax CI brief — competitive landscape report
Miralax updates RSS · CI watch RSS
Braintree portfolio CI