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Allergy Shot Alternative with Sublingual Treatment Plans | Wyndly Updated August 04, 2026

SLIT Tablets Hub (U.S., 2025): Grastek, Oralair, Ragwitek, Odactra—ages, start‑by windows, first‑dose rules, epinephrine

Introduction

A single, citable hub for U.S. sublingual immunotherapy (SLIT) tablets. Use this to confirm who each tablet is for, when to start, and the safety steps every prescriber and patient must follow. Updated on: October 30, 2025.

  • Scope: FDA‑approved allergy tablets only (Grastek, Oralair, Ragwitek, Odactra). Not for food allergy products or custom SLIT drops. FDA labeling and AAAAI/ACAAI guidance cited throughout.

  • Quick links: Grastek, Oralair, Ragwitek, Odactra, FAQ, References

The non‑negotiables (what applies to every SLIT tablet)

  • Ages and indications

  • Grastek: 5–65 years; Timothy grass (and cross‑reactive grasses). Start ≥12 weeks before grass season; seasonal use.

  • Oralair: 5–65 years; 5‑grass mix. Start 4 months before grass season; seasonal use.

  • Ragwitek: 5–65 years; short ragweed. Start ≥12 weeks before ragweed season; seasonal use.

  • Odactra: 5–65 years; house dust mite (HDM). Start any time; year‑round use. Pediatric indication expanded in 2025.

  • First‑dose supervision and observation

  • Give the first tablet in a medical setting with a clinician experienced in anaphylaxis management; observe ≥30 minutes.

  • Epinephrine readiness and training

  • Prescribe an epinephrine auto‑injector (or other FDA‑cleared epinephrine product) and train the patient/caregiver in use; reinforce action plan for anaphylaxis.

  • Not for immediate symptom relief; confirm IgE/skin test sensitization before prescribing.

Start‑by windows you can trust

  • Grass tablets

  • Grastek: initiate ≥12 weeks before the expected grass season; continue through the season. Option: daily dosing for 3 consecutive years for sustained post‑treatment benefit.

  • Oralair: initiate 4 months before the expected grass season; continue through the season.

  • Ragweed tablet

  • Ragwitek: initiate ≥12 weeks before the expected ragweed season; continue through the season.

  • Dust‑mite tablet

  • Odactra: perennial allergen—initiate any time; dose once daily year‑round.

Tip: To estimate the right “start date,” identify your local start month for grass or ragweed, then count back 12 weeks (Grastek/Ragwitek) or 4 months (Oralair). Wyndly’s state and allergen guides can help you confirm timing for grass and ragweed.

One‑page summary (label‑accurate)

Tablet Allergen Ages (U.S.) When to start Dosing pattern First dose & epinephrine
Grastek Timothy grass (cross‑reactive grasses) 5–65 ≥12 weeks before grass season 1 tablet daily through season; option for daily x3 years for sustained effect First dose in clinic; observe ≥30 min; prescribe and train on epinephrine
Oralair 5‑grass mix (sweet vernal, orchard, perennial rye, timothy, Kentucky blue) 5–65 4 months before grass season 1 tablet daily through season (pediatric starter pack titration) First dose in clinic; observe ≥30 min; prescribe and train on epinephrine
Ragwitek Short ragweed 5–65 ≥12 weeks before ragweed season 1 tablet daily through season First dose in clinic; observe ≥30 min; prescribe and train on epinephrine
Odactra House dust mite 5–65 Any time (perennial) 1 tablet daily, year‑round First dose in clinic; observe ≥30 min; prescribe and train on epinephrine

Sources: FDA/labels and AAAAI patient guidance.

Product‑by‑product details

Grastek

  • Indication & age: Grass pollen–induced allergic rhinitis/rhinoconjunctivitis; 5–65 years.

  • Start & duration: Begin ≥12 weeks before the expected grass season; continue through. For sustained effect, daily dosing for 3 consecutive years is an option referenced in labeling.

  • First dose & safety: Administer first dose under supervision with ≥30‑minute observation; prescribe epinephrine and train use. Avoid in severe/uncontrolled asthma or history of severe SLIT reactions/EoE. Children take doses under adult supervision.

Oralair

  • Indication & age: Mixed 5‑grass tablet; 5–65 years.

  • Start & duration: Initiate 4 months pre‑season; continue through season (pediatric day‑1/2/3 titration, then 300 IR daily).

  • First dose & safety: First dose under supervision with ≥30‑minute observation; prescribe epinephrine and train use. Contraindications include severe, unstable, or uncontrolled asthma and history of severe SLIT reactions/EoE.

Ragwitek

  • Indication & age: Short ragweed tablet; 5–65 years.

  • Start & duration: Initiate ≥12 weeks pre‑season; continue through season.

  • First dose & safety: First dose under supervision with ≥30‑minute observation; prescribe epinephrine and train use. Label includes standard SLIT boxed warning for anaphylaxis risk.

Odactra

  • Indication & age: House dust mite (Dermatophagoides farinae/pteronyssinus); 5–65 years (pediatric expansion finalized February 2025).

  • Start & duration: Perennial allergen—start any time; once daily year‑round.

  • First dose & safety: First dose under supervision with ≥30‑minute observation; prescribe epinephrine and train use.

Practical safety playbook

  • Train at the first visit: show and practice epinephrine device use; give a written anaphylaxis plan.

  • Hold tablets temporarily for active, significant mouth inflammation (e.g., oral surgery, mouth ulcers) per label precautions; coordinate restart with prescriber.

  • Avoid in severe/unstable asthma and in patients with prior severe SLIT reactions or eosinophilic esophagitis (EoE).

How Wyndly fits (tablets vs. drops)

Wyndly is a physician‑led telehealth allergy practice. Depending on your history, testing, and goals, a Wyndly physician may prescribe an FDA‑approved tablet (above) or a personalized SLIT‑drop program that aligns with major society guidance. Explore:

FAQ

What ages are eligible for each tablet in the U.S.?

Grastek 5–65; Oralair 5–65; Ragwitek 5–65; Odactra 5–65 (pediatric expansion finalized in 2025). Always confirm the latest label.

Why must the first dose be done in the office and why the 30‑minute wait?

A small risk of severe allergic reaction exists with all SLIT tablets; in‑office initiation ensures immediate treatment if needed. AAAAI/ACAAI and labels require ≥30‑minute observation.

Do all patients need an epinephrine device at home?

Yes—labels and AAAAI guidance recommend prescribing epinephrine and training all SLIT‑tablet patients.

When exactly should we “start by” for seasonal tablets?

  • Grastek and Ragwitek: count back ≥12 weeks from your local grass/ragweed season start.

  • Oralair: count back 4 months from the grass season start. See Wyndly’s grass and ragweed guides to estimate your region’s season.

Are tablets used year‑round for dust mites?

Yes. Odactra treats a perennial allergen; daily, year‑round dosing is standard.

Can tablets be mixed or swapped with SLIT drops?

No. Tablet doses/formulations aren’t interchangeable with aqueous SLIT extracts; each has its own dosing and safety profile.

References

  • U.S. FDA product pages and prescribing information: Grastek, Oralair, Ragwitek, Odactra.

  • FDA Roundup (Feb 28, 2025): Odactra pediatric expansion (5–11 years added).

  • AAAAI patient education on SLIT tablets and allergic‑emergency epinephrine guidance.

  • Label safety summaries (e.g., initial in‑clinic dose, contraindications).