Methylnaltrexone

  • Part D specialty tier in 69% of formularies (2026Q3)
  • Relistor

Therapy management checklist

Screening, baseline and ongoing monitoring with the label's stated frequency, hold and discontinue criteria, and counseling points, each quoted from the FDA label.

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Storage and cold chain

Methylnaltrexone: storage and handling

Freezing
Do not freeze
Label statement
Do not freeze.
Room temperature
at or below 30°C (86°F)
Label statement
Tablets Store at up to 25°C (77°F); excursions permitted to 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature].
Room temperature
at or below 30°C (86°F)
Label statement
Injection Store at 20° to 25°C (68° to 77°F); excursions permitted to 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature].
Room temperature
at or below 25°C (77°F)
Label statement
Store pre-filled syringes at room temperature between 68° to 77°F (20° to 25°C). .
Back into the refrigerator
Not addressed
Light
Protect from light
Label statement
Protect from light.
Shaking
Not addressed

Temperature excursion helper

Answers only from this label's storage statements. It does not judge whether a product is still usable beyond what the label states.

Within the label's stated room-temperature allowance (at up to 30°C (86°F)). Follow the label's instructions for what to do next.

Entered: 1 day at up to 77°F (25°C).

Tablets Store at up to 25°C (77°F); excursions permitted to 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature].

If anything else happened to the product, or you are unsure, Contact the manufacturer at 1-800-321-4576 (the number printed on the label) about this product.

Where the label prints this number
For more information, go to www.Relistor.com or call 1-800-321-4576.
All storage statements on the label (8)
  • Tablets Store at up to 25°C (77°F); excursions permitted to 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature].
  • Injection Store at 20° to 25°C (68° to 77°F); excursions permitted to 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature].
  • Do not freeze.
  • Protect from light.
  • How should I store RELISTOR? .
  • Store pre-filled syringes at room temperature between 68° to 77°F (20° to 25°C). .
  • Do not freeze RELISTOR. .
  • Revised: 05/2024 9502506 70014843-01 Figure A figures B and C figure D figure E figure F figure G figure H Figure I figure J figure K logo logo Instructions for Use - Vial and Syringe with Retractable Needle in Tray INSTRUCTIONS FOR USE RELISTOR ® (rel-i-store) (methylnaltrexone bromide) injection, for subcutaneous use Vial and Syringe with Retractable Needle in Tray Read this Instructions for Use before you start using RELISTOR and each time you get a refill.

FDA label version 68, effective May 1, 2024. DailyMed

Dosing and titration calendar

Built only from the schedules the label states (loading, titration, day schedules, cycles and weight bands). Steps the label states in words the calendar cannot place are shown, not guessed.

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Medicare Part D coverage

26%of plans list it
74%of those: prior authorization
15%step therapy
79%quantity limit
89%specialty tier

5,496 Part D plans, CMS formulary files 2026Q3. Look up tier, PA, step therapy and quantity limits by plan

Patient assistance

No manufacturer program page is listed for this drug yet.

Independent foundations and the full directory (checked 2026-11-06). Eligibility and amounts are set by each program; open its page for them.

For licensed clinicians. Use with clinical judgment. Statements are quoted from the FDA label; confirm against the label for the product you are using.