EpilepsyRx

Everolimus

Afinitor Disperz · generic tablets for oral suspension

DailyMed-verified antiseizure indications

Indication / use

Label / evidence summary
Afinitor Disperz and corresponding generic tablets for oral suspension: adjunctive treatment of TSC-associated focal-onset seizures at age 2 years and older. Conventional Afinitor tablets do not have this seizure indication.
Role
Maintenance
Class
mTOR inhibitor

Indications checked 27 September 2026. Product, route, age, and treatment-role limits apply. A DailyMed listing alone does not establish FDA approval.

Formulations & strengths

U.S. product labels; strengths per dosage unit.

Brand & formulation labels

Each link names the product and formulation it covers. Archived labels do not establish current availability.

Dosing & administration

Adult / product-specific schedule
For TSC-associated focal seizures: Afinitor Disperz starting dose 5 mg/m² orally once daily; adjust using whole-blood trough monitoring to 5–15 ng/mL. Dosing differs for other everolimus indications.
Pediatric
For the seizure indication, age 2 years and older: the same body-surface-area starting dose and trough target. Safety and effectiveness for this indication are not established below age 2.
Titration / repeat dosing
Check trough concentrations 1–2 weeks after initiation or a dose change. The label uses new dose = current dose × target / measured trough, with no increase greater than 5 mg at one titration. Reassess after interaction or hepatic-function changes; apply the label’s separate toxicity modifications.

Practical administration

Product instructions
Prepare suspension in water only, using the label’s oral-syringe or small-glass method. Take consistently with or without food. Do not combine Afinitor and Afinitor Disperz to achieve a dose.

Dose adjustment & concentrations

Renal impairment
Creatinine clearance 25–178 mL/min had no significant effect on oral clearance in the label analysis. Monitor renal function; renal failure is a serious precaution.
Hepatic impairment
For TSC-associated seizures with severe hepatic impairment (Child-Pugh C), the cited brand label recommends starting 2.5 mg/m² once daily, then adjusting by trough concentrations. Monitor troughs after changes in hepatic function.
Serum reference information
Whole-blood trough target for TSC-associated seizures: 5–15 ng/mL. Use the same assay and laboratory where possible.

Safety

Boxed warning
No boxed warning in the cited label.
Contraindications
Clinically significant hypersensitivity to everolimus, other rapamycin derivatives or product excipients.
Serious precautions & monitoring
Noninfectious pneumonitis; serious or opportunistic infections; stomatitis; renal failure; myelosuppression; hyperglycemia / dyslipidemia; impaired wound healing and embryo-fetal toxicity. Monitor blood counts, renal function, glucose, lipids and trough levels. Avoid live vaccines during treatment.

Common / selected adverse effects

  • Stomatitis
  • Respiratory infections
  • Diarrhea
  • Fever
  • Cough / rash

Selected label-reported effects; frequencies cannot be compared across drugs.

Drug interactions: toxicity & clinical action

Partner / combinationClinical effectClinical action
Strong CYP3A / P-gp inhibitorsSubstantially increased everolimus exposure.Avoid combined use per label.
Moderate CYP3A / P-gp inhibitors; cannabidiol oral solutionIncreased exposure; cannabidiol increased AUC about 2.5-fold in a label interaction study.Apply product-specific dose reduction and repeat trough monitoring.
Strong CYP3A / P-gp inducers, including enzyme-inducing antiseizure medicinesReduced everolimus exposure.Follow the label’s induction-specific dose adjustments and monitor troughs.
ACE inhibitorsHigher angioedema risk.Avoid combination per label.

Selected interactions; consult the full label and complete medication list.

Pregnancy & contraception

Fetal / neonatal risk
Can cause fetal harm based on animal studies and mechanism; human pregnancy data are limited. Verify pregnancy status before treatment. Do not breastfeed during treatment or for 2 weeks after the last dose.
Contraception
Effective contraception during treatment and for 8 weeks after the last dose for females; for 4 weeks after the last dose for males with female partners of reproductive potential.

Clinical evidence

Research summaries describe studied populations and outcomes; they do not add indications or constitute treatment recommendations.

Direct pivotal trial

Trial summary

Study design / duration
EXIST-3: randomized, double-blind, placebo-controlled adjunctive trial in 366 patients with treatment-resistant TSC-associated focal seizures; 6-week titration and 12-week maintenance.
Primary endpoint
Reduction in focal-seizure frequency and proportion with at least 50% reduction.
Results
At least 50% seizure reduction occurred in 28.2% of the low-exposure group, 40.0% of the high-exposure group and 15.1% with placebo. These study exposure groups do not replace the current label’s trough target.

Trial publications

Comparative evidence

Findings
No head-to-head efficacy comparison is summarized.

Mechanism of action

  • Everolimus binds FKBP12; the complex inhibits mTORC1 signaling.
  • Tuberous sclerosis syndrome involves dysregulated mTOR signaling; the seizure indication is restricted to TSC-associated focal seizures.

Pharmacology

Adult values unless specified. Vd/F denotes apparent oral distribution volume.

Pharmacokinetics

Bioavailability
Absolute oral bioavailability is not quantified in the cited label. Exposure (AUC) is similar between Afinitor and Afinitor Disperz, but Disperz peak concentrations are 20–36% lower; this does not make their seizure indications interchangeable.
Elimination half-life
Mean elimination half-life approximately 30 hours.
Volume of distribution
Not quantified in the cited product label.
Active metabolite(s)
Six main circulating metabolites have approximately 100-fold less activity than everolimus; no clinically important active metabolite is established in the label.
Active-metabolite half-life
No clinically important active-metabolite half-life established in the label.
Protein binding
Approximately 74%.
Metabolism / elimination
CYP3A4 substrate; P-glycoprotein substrate. Predominantly fecal recovery of radiolabeled material; renal recovery is small.

Values reflect the cited product and study population; they are not interchangeable across formulations.

Molecular structure

Molecular structure of Everolimus
Principal compound; salt and product forms may differ.
NIH PubChem structure and record ↗

Product history

Initial U.S. approval
Afinitor Disperz: August 29, 2012 (NDA 203985); TSC-associated seizure indication added April 10, 2018.
Market / formulation history
Original everolimus approval preceded its seizure indication. Conventional Afinitor tablets and Disperz have different labeled uses.
Brands
Afinitor Disperz · generic tablets for oral suspension
Manufacturer / marketer
Novartis (Afinitor / Afinitor Disperz); Biocon (representative generic suspension tablets)
Generic availability
Yes — a representative tablets-for-oral-suspension label is linked.
Related drugs
Sirolimus is another mTOR inhibitor; it does not inherit this U.S. seizure indication.

Sources & review status

The Biocon suspension-tablet label is a representative generic source. Afinitor Disperz is linked to the original brand-name insert; conventional Afinitor tablets have different indications.

Indications and DailyMed PDFs checked: 2026-09-27. Other profile sources reviewed: 2026-09-27 · label revision noted at that review: Current DailyMed brand and generic labels reviewed September 2026.. This is a draft reference; final review is pending.