Bermuda Grass Allergy Shots: The Only FDA-Standardized Warm-Season SCIT
Bermuda grass allergy shots (SCIT) use the only FDA-standardized warm-season grass extract — and the only one proven in a randomized controlled trial to cut nasal symptom scores by 51% versus placebo (Tabar et al., 2005). Because Bermuda lacks Group 5 allergens entirely, a Timothy-only SCIT regimen provides less than 40% cross-coverage for primary Cyn d 1 sensitization, making separate Bermuda vial inclusion essential for Sun Belt patients.
About Curex’s SCIT program
Curex’s at-home allergy shots (SCIT) are coming soon and focus on the most common environmental allergens:
- • Pollens — tree, grass, weed & ragweed
- • Pet dander — cat & dog
- • Dust mites
- • Molds — Alternaria & mold mix
Bermuda Grassis covered here for general education and may not be part of Curex’s current treatment set. Join the waitlist and our care team will help confirm your options.
Bermuda Grass Allergy Immunotherapy: How It Works
Allergy immunotherapy is the only long-term treatment that re-trains the immune system to stop overreacting to bermuda grass — rather than just masking symptoms with antihistamines or steroids. By gradually exposing the body to controlled doses of bermuda grass allergen, immunotherapy shifts the underlying allergic response and produces relief that often outlasts treatment by 7–10 years.
There are two evidence-based forms of bermuda grass immunotherapy used today, both built on the same desensitization principle but delivered very differently.
of sustained relief after a complete immunotherapy course — the only allergy treatment with proven long-term effect after stopping.
Allergy Shots (SCIT)
Weekly injections of bermuda grass extract in a clinic, escalating over 3–6 months until a maintenance dose is reached. Continued monthly for 3–5 years. Longest clinical track record for bermuda grass allergy.
- Strongest evidence base for severe and polysensitized patients
- Covered by most insurance plans
- Requires 50–100+ in-person clinic visits across the full course
- Or at home with no clinic visits— Curex’s Virtual Shot Room model delivers the same SCIT program with live video supervision by trained Curex clinical staff for the first injection from each new vial or concentration and restarts after gaps or reactions.
Allergy Drops / Tablets (SLIT)
Daily drops or dissolvable tablets containing bermuda grass extract, held under the tongue at home. Same desensitization principle, delivered without injections. WHO-recognized as an effective form of allergy immunotherapy since 2001.
- Taken at home — no weekly clinic trips, no needles
- Lower systemic reaction rate than allergy shots
- Curex offers prescription bermuda grass immunotherapy drops with allergist oversight
The rest of this page goes deep on allergen-specific immunotherapy with shots — protocol, efficacy data, side effects, and cost. If you’d rather skip the clinic and treat bermuda grass allergy with at-home drops, see how Curex sublingual immunotherapy compares below.
What is Bermuda Grass?
The biology, taxonomy, and clinical fingerprint of Bermuda Grass — the foundation of how SCIT targets it.
Bermuda grass (Cynodon dactylon) seedhead releasing pollen — the dominant lawn and turf grass across the southern US, active March through November in Arizona and near-continuous in South Florida.
- Scientific name
- Cynodon dactylon
- Family
- Poaceae (Chloridoideae)Grass family — warm-season Chloridoideae
- Type
- Perennial warm-season grass pollen
- Native to
- East Africa / Mediterranean; now cosmopolitan in warm climates worldwide
- Allergen proteins
- Cyn d 1 (major) — Group 1 beta-expansin, >90% sensitizationCyn d 7 — polcalcin (pan-allergen)Cyn d 12 — profilin (pan-allergen)Cyn d 15Cyn d 22w — enolaseCyn d 23Cyn d 24
- Particle size
- 28–32 μm
- Avoidance difficulty
- Nearly impossible
How Bermuda Grass Allergy Presents
Symptoms by body system — useful for distinguishing Bermuda Grass sensitivity from overlapping allergies and infections.
Respiratory
- Persistent sneezing during outdoor activity from March through November
- Nasal congestion and rhinorrhea with year-round low-grade symptoms in deep South
- Wheezing and exercise-induced bronchospasm when mowing or playing outdoor sports
- Chronic cough from post-nasal drip during peak pollen months
- Asthma exacerbations linked to high pollen counts in Phoenix and Houston
Ocular
- Intense eye itching and redness when outdoors on warm sunny mornings
- Watery discharge and bilateral conjunctival injection during peak season
- Eyelid swelling after prolonged outdoor exposure
- Contact lens intolerance during high-pollen days
Dermal
- Contact urticaria after sitting or lying on Bermuda grass lawns
- Localized skin rash from rolling or playing on short-mowed turf
- Eczema flares during high-pollen spring and fall peaks
Systemic
- Fatigue and cognitive dulling during extended Bermuda pollen season
- Sleep disruption from nighttime nasal congestion
- Reduced outdoor exercise capacity during May–June pollen peaks
- Mood effects and reduced quality of life with multi-month seasonal burden
Bermuda is the allergen that exposes a critical gap in standard grass testing. When I see a patient from Houston or Phoenix who failed a Timothy-based regimen, the first thing I check is their Cyn d 1 level. If it's elevated with a low Phl p 5, they never needed Timothy monotherapy — they needed Bermuda on its own vial from the start.
When & Where Bermuda Grass Peaks
Allergen intensity by month and by state. Useful for timing SCIT start dates and travel planning.
12-Month Intensity
Peak: May–June across the Sun Belt; near-continuous in South Florida and the lower Rio Grande Valley· March–November in Arizona and Southern California; year-round at low levels in Miami-Dade and Key West
US Exposure Map
13 high-intensity statesExposure intensity by state (text version)
- ME:
- Low
- VT:
- Low
- NH:
- Low
- WA:
- Low
- MT:
- Low
- ND:
- Low
- MN:
- Low
- WI:
- Low
- MI:
- Low
- NY:
- Low
- MA:
- Low
- OR:
- Moderate
- ID:
- Low
- WY:
- Low
- SD:
- Low
- IA:
- Low
- IL:
- Low
- IN:
- Low
- OH:
- Low
- PA:
- Low
- NJ:
- Low
- CT:
- Low
- RI:
- Low
- CA:
- High
- NV:
- High
- UT:
- Moderate
- CO:
- Low
- NE:
- Low
- MO:
- Moderate
- KY:
- Low
- WV:
- Low
- VA:
- Moderate
- MD:
- Moderate
- DE:
- Moderate
- AZ:
- High
- NM:
- High
- KS:
- Moderate
- AR:
- Moderate
- TN:
- Moderate
- NC:
- High
- SC:
- High
- OK:
- Moderate
- LA:
- High
- MS:
- High
- AL:
- High
- GA:
- High
- TX:
- High
- FL:
- High
- AK:
- Low
- HI:
- High
What Bermuda Grass Cross-Reacts With
Patients sensitized to one allergen often react to others sharing similar proteins. This map shows the documented molecular overlaps.
Bermuda grass (Chloridoideae) shares Group 1 beta-expansin allergens with all grasses but cross-reacts only partially (~30–40% IgE inhibition) with the Pooideae cluster — a clinically critical gap that makes Bermuda sensitization distinct from Timothy or ryegrass allergy.
Chloridoideae subfamily — Group 1 homology; Bermuda extract provides empirical coverage for Buffalo
Chloridoideae — shares Group 1 architecture and Cyn d 1-like proteins with no Group 5
Panicoideae — partial Group 1 cross-reactivity but separate subfamily and separate vial needed
Is SCIT Right for Your Bermuda Grass Allergy?
Answer five questions to see whether Bermuda grass SCIT fits your clinical profile.
How severe are your Bermuda grass symptoms during peak season?
The Bermuda Grass SCIT Protocol
Bermuda grass SCIT uses an FDA-standardized extract available at 10,000 BAU/mL — the only warm-season grass extract with that designation, though its maximum concentration is one-tenth that of Timothy and other standardized grasses. Because Bermuda cross-reacts minimally with Pooideae grasses, it must be placed in a dedicated vial separate from any Timothy, ryegrass, or bluegrass components.
Injections begin at a highly dilute starting concentration and increase progressively toward the maintenance dose under 30-minute post-injection observation. The cluster protocol achieves maintenance in 8 visits — roughly half the standard timeline — with a comparable safety profile per Cox et al. (2011). Your allergist will titrate the Bermuda extract concentration individually based on skin test or serum IgE results.
Once the maintenance dose is reached, maintenance injections sustain immune tolerance. Because Bermuda pollinates for up to 9 months in the Sun Belt, many patients receive maintenance injections year-round rather than following a traditional pre-seasonal build-up schedule. Your allergist will monitor symptom scores and medication use to assess year-over-year improvement.
Most patients who complete a full Bermuda SCIT course experience sustained symptom reduction for years after stopping injections — the hallmark of disease modification rather than symptom suppression. Some patients with ongoing high occupational or residential exposure opt to continue maintenance indefinitely in consultation with their allergist.
Extract Concentration Ladder
You progress through each vial during build-up. Concentration increases ~10x per step.
What the Research Shows for Bermuda Grass SCIT
Bermuda grass SCIT has more direct RCT evidence than any other warm-season grass extract — a 32-week randomized placebo-controlled trial specifically testing Cynodon dactylon extract.
- Nasal symptom score reduction51%Tabar et al., 2005, J Investig Allergol Clin Immunol, N=40
- Medication score reduction (pediatric, 1-yr retrospective)40%Multiple regional retrospective series cited in Cox 2011 JACI Practice Parameter
- IgE-sensitization prevalence in South-Central US clinics58%López et al., 2019, Ann Allergy Asthma Immunol — 27–58% range across Sun Belt clinics
Tabar et al. (2005) is the definitive Bermuda SCIT RCT, demonstrating 51% nasal symptom score reduction — a clinically meaningful effect size consistent with the broader grass SCIT meta-analysis literature (Calderón et al., 2007 Cochrane). The pediatric medication-score data and clinic-population sensitization prevalence figures reinforce the population-level burden and treatment responsiveness.
Ready to skip the surprise bills?
At-home allergy shots (SCIT) are designed by board-certified allergists. See the listed SCIT plan rate in our pricing record and request a quote for eligibility, initiation and total care costs.
- MD-ledBoard-certified allergists
- QuoteTotal care estimate
- 50K+Patients treated
- HSA/FSAEligible
Bermuda Grass SCIT Side Effects
Bermuda grass SCIT carries the same local and systemic reaction profile as other inhalant SCIT extracts. Reactions are managed by the 30-minute post-injection observation period required at every visit.
Local reactions
4 documented| Reaction | Rate | Severity |
|---|---|---|
Injection-site swelling Wheal and flare at injection site; resolves within hours | Rate 30–50% | Mild |
Injection-site itching Pruritus at the injection arm; cold compress provides relief | Rate 25–40% | Mild |
Large local reaction (>25 mm) May indicate need for dose adjustment; inform your allergist | Rate 5–10% | Moderate |
Delayed local induration Firm lump persisting 24–48 hours; typically resolves without intervention | Rate 2–5% | Mild |
Systemic reactions
4 documented| Reaction | Rate | Severity |
|---|---|---|
Nasal/conjunctival flare Brief worsening of baseline allergy symptoms post-injection | Rate 0.5–1% | Mild |
Generalized urticaria Treated with antihistamines; requires dose reduction at next visit | Rate 0.1–0.3% | Moderate |
Mild bronchospasm More likely in patients with poorly controlled asthma — pre-treatment spirometry is recommended | Rate 0.1–0.2% | Moderate |
Systemic anaphylaxis Managed immediately with epinephrine; Curex confirms a prescribed auto-injector on hand and supervises the first injection from each new vial or concentration live in the Virtual Shot Room | Rate <0.01% | Severe |
No deaths from inhalant SCIT have been reported in the US in the past decade under proper protocols. Bermuda SCIT safety data are consistent with the broader SCIT safety literature, with the 10,000 BAU/mL maximum concentration contributing to a conservative dose ceiling. Curex preserves that safety profile at home with a USP <797> serum, Virtual Shot Room–supervised the first injection from each new vial or concentration, a prescribed epinephrine auto-injector confirmed on hand, and allergist-overseen escalation.
SCIT vs Alternatives for Bermuda Grass
Bermuda grass-sensitized Sun Belt patients have four main treatment pathways: SCIT with a Bermuda-specific vial, at-home SLIT drops, avoidance strategies, or year-round symptom management medications.
| Criterion | At-Home SCIT (Curex)Best | SLIT drops/tablets | Avoidance | Medications |
|---|---|---|---|---|
| Effectiveness | 51% nasal symptom reduction (Tabar 2005 RCT) | Moderate — no Bermuda-specific approved tablet; custom drops | Minimal — near-impossible in Sun Belt | Symptom suppression only |
| 5-yr cost | $3,500–$10,000 | $1,500–$4,000 | Low direct cost | $500–$3,000 |
| Duration | 3–5 years | 3–5 years | Ongoing | Indefinite daily use |
| Convenience | At-home self-injection; weekly build-up → monthly | Daily drops at home | High lifestyle burden | Easy — oral/nasal |
| Safety | <0.01% anaphylaxis; Virtual Shot Room–supervised dosing + prescribed epi | Very low systemic risk | Excellent | Generally safe; drowsiness risk |
| Lasting effect | 7–12+ years post-course | Moderate lasting effect | No disease modification | None — symptoms return off medication |
At-Home SCIT (Curex)Best
SLIT drops/tablets
Avoidance
Medications
SCIT with a dedicated Bermuda vial is the only disease-modifying option with published RCT data for Cynodon dactylon sensitization. Curex delivers that SCIT as an at-home allergy shot with pricing confirmed in a current program quote — a serum that can include Bermuda alongside other warm-season grasses, compounded under USP <797>, with the first injection from each new vial or concentration supervised live in the Virtual Shot Room, a prescribed epinephrine auto-injector confirmed on hand, and allergist-overseen escalation — the RCT-backed modality, now fitting the Sun Belt lifestyle without weekly clinic visits.
What Bermuda Grass SCIT Actually Costs
Most major US insurers cover Bermuda grass SCIT under standard allergy benefits when prescribed by a board-certified allergist following positive skin or serum IgE testing. Because Bermuda has an FDA-standardized extract, prior authorization is typically straightforward; out-of-pocket costs depend on individual deductible and co-insurance structure. Curex's at-home testing can document Cyn d 1 sensitization as the clinical basis for coverage.
Cost range varies by deductible, co-insurance, and clinic.
Verify these codes with your insurer to confirm coverage.
See the listed Environmental Allergy Shots Plan rate, commercial terms dated 2026-10-12; consultations are included without copay. Confirm availability, eligibility, other included services, testing, any in-person care, insurance responsibility and billing cadence in your written quote before enrolling.
Join the waitlistStop guessing about your bermuda grass allergy. Get a plan.
Take Curex’s 3-minute allergy quiz. A board-certified allergist will review your symptoms and recommend the right immunotherapy path for you — shots or drops.
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Bermuda Grass SCIT — Frequently Asked
Quick answers to the questions patients ask most before starting treatment.
Standard SCIT regimens typically use Timothy grass (Phleum pratense) as the primary Pooideae representative. Timothy contains Group 5 (Phl p 5) allergens that anchor cross-reactivity across temperate grasses. Bermuda lacks Group 5 entirely — its major allergen Cyn d 1 (Group 1 beta-expansin) has unique epitopes not present in Timothy. A patient sensitized primarily to Cyn d 1 will see less than 40% IgE inhibition from Timothy extract alone (Weber, 2003, Ann Allergy Asthma Immunol). For effective SCIT, Bermuda must be placed in a separate vial, and a component-resolved diagnostic test showing elevated Cyn d 1 with low Phl p 5 is the clinical signal that confirms primary Bermuda sensitization rather than Pooideae sensitization.
The Bermuda pollen season varies significantly by geography. In Phoenix and Southern California, Bermuda pollinates from approximately March through November — a nine-month season with a May–June peak. In South Florida and the lower Rio Grande Valley, it pollinates year-round at low background levels with two seasonal peaks. In comparison, temperate grasses like Timothy have a more discrete 6–8 week season in May–July. This extended season is one reason Bermuda-sensitized patients often experience persistent rather than clearly seasonal symptoms, complicating diagnosis. The City of Phoenix enacted an Airborne Pollen Ordinance requiring residential Bermuda lawns be mowed short to suppress flowering — a regulatory acknowledgment of Bermuda's unique urban allergen burden.
Cyn d 1 is the major allergen of Bermuda grass — a Group 1 beta-expansin protein recognized by more than 90% of Bermuda-sensitized patients (Asero et al., 2008, Int Arch Allergy Immunol). Component-resolved diagnostic testing for Cyn d 1 identifies primary Bermuda sensitization as distinct from Pooideae sensitization (detected by Phl p 1 and Phl p 5). The pattern of high Cyn d 1 IgE with low Phl p 5 confirms that Timothy-based SCIT will under-treat the patient, while a Bermuda-specific vial is required for clinical benefit. This molecular distinction is especially critical for patients in the Sun Belt who may never have been adequately tested with a Timothy-centric panel. Cyn d 1 is available as a standalone ImmunoCAP component (f6/g2 code).
Yes. Bermuda grass SCIT is appropriate for children who meet the standard candidacy criteria — confirmed IgE sensitization, clinically relevant symptoms, and adequate symptom control as the treatment goal. Multiple regional retrospective series have documented medication score reductions of approximately 40% in pediatric Bermuda SCIT patients after one year of treatment. Cluster build-up protocols (achieving maintenance in 8 visits rather than the standard 16) are particularly useful for pediatric patients given the clinic commitment. A board-certified allergist should assess the child's asthma control before initiating build-up, as pre-existing poorly controlled asthma is a relative contraindication. Children as young as 5–7 years commonly receive SCIT in clinical practice.
Bermuda grass SCIT is typically covered by major US health insurers under standard allergy-treatment benefits, billed under CPT codes 95115, 95117, and 95165. The FDA-standardized extract status simplifies prior authorization compared to non-standardized extracts, as payers have clear reference points for dosing and clinical indication. Coverage depends on demonstrated IgE sensitization (skin prick test or serum-specific IgE), prescription by a board-certified allergist, and the patient's individual deductible and co-insurance structure. Patients with high-deductible plans may have substantial out-of-pocket costs in the build-up phase; the 5-year total cost typically ranges from $3,500 to $10,000 including extract preparation, injections, and office visits.
Bermuda SCIT provides meaningful coverage for Chloridoideae subfamily grasses (zoysia, buffalo grass) via Group 1 cross-reactivity, but limited coverage for Pooideae grasses (Timothy, ryegrass, Kentucky bluegrass, fescue). If you have dual sensitization to both Bermuda and a temperate grass like Timothy, your allergist will typically include both Bermuda and a Pooideae representative in separate vials in the same treatment plan. Cross-reactivity with Panicoideae grasses (bahia, Johnson grass) is intermediate (~55–70% IgE inhibition), but clinical evidence supports including separate Panicoideae extract for patients with documented bahia or Johnson grass sensitization in the Southeast or Plains. The key principle: mixing Bermuda with Pooideae extracts in the same vial can reduce extract potency — separate vials are best practice for optimal dosing.
Missing a scheduled Bermuda SCIT injection requires dose adjustment based on how long the interval was. Most practice parameters recommend a moderate dose reduction for lapses of 1–2 weeks beyond the scheduled interval, with more conservative reductions for longer gaps. Your allergist's office will follow a standard missed-dose protocol chart. During the build-up phase, consistent scheduling is more important — lapses can slow the timeline to maintenance. During the maintenance phase, an occasional missed month is less clinically significant, and your allergist will determine whether restarting from a lower dose is needed. You should not attempt to make up a missed dose by doubling the next injection.
There is no FDA-approved SLIT tablet for Bermuda grass — Grastek (Timothy) and Oralair (5-grass mix) cover only Pooideae species and will not adequately address Bermuda sensitization. Custom at-home sublingual immunotherapy drops can include Bermuda extract alongside other allergens in a multi-allergen formulation; however, published head-to-head RCT data comparing custom SLIT drops versus SCIT specifically for Bermuda are limited. For Sun Belt patients with year-round exposure who find clinic visits burdensome, Curex's at-home allergy shot delivers the RCT-backed Bermuda SCIT with Virtual Shot Room–supervised dosing and a prescribed epinephrine auto-injector confirmed on hand. A large safety study of self-administered allergen immunotherapy (Schaffer et al., 2015) found that across 23,614 patients giving 2,021,600 injections, the systemic reaction rate was just 0.16% per patient with no fatalities — lower than the 3%–14% typically seen with office-based shots. A board-certified allergist helps determine which delivery route aligns with your sensitization profile and symptom severity.
This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. Content reviewed by board-certified allergists at Curex.
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