Best Sublingual Immunotherapy in Hyderabad at Dr. Raju's Allergy Centre & Multispeciality Hospital

What is Sublingual Immunotherapy?

Sublingual immunotherapy (SLIT) is a form of allergy treatment that involves placing small doses of allergen extracts under the tongue to gradually desensitise the immune system. Unlike traditional allergy shots (subcutaneous immunotherapy) which are given by injection, SLIT is administered at home using drops or tablets placed under the tongue.

SLIT works on the same principle as conventional immunotherapy—regular exposure to gradually increasing amounts of allergens helps the immune system build tolerance, reducing the severity of allergic reactions over time. The difference lies in the route of administration: instead of being injected, the allergen is absorbed through the mucous membranes under the tongue, where specialised immune cells help promote tolerance.

This needle-free approach has made allergy immunotherapy accessible to more patients, including those who fear injections, have difficulty with regular clinic visits, or prefer the convenience of home-based treatment. At Dr. Raju's Allergy Centre, we offer comprehensive SLIT programmes for appropriately selected patients.

How Does Sublingual Immunotherapy Work?

The Science: Allergen extracts under the tongue contact dendritic and Langerhans cells in the oral mucosa; these cells capture the allergen and promote tolerance rather than allergy.

Over time this leads to: Immune deviation (Th2 to Th1); regulatory T-cell induction; blocking antibody (IgG) production; reduced mast cell reactivity; mucosal tolerance in the respiratory tract.

Administration Methods:

SLIT Tablets: Pre-measured, dissolvable tablets; available for grass pollen, ragweed, dust mites; placed under tongue to dissolve; taken daily.

SLIT Drops: Liquid extracts; customised to allergy profile; placed under tongue, held 1–2 minutes, then swallowed; taken daily.

SLIT vs. Traditional Allergy Shots

Conditions Treated with SLIT

SLIT Tablets (FDA/CE Approved): Grass pollen allergy; ragweed pollen allergy; house dust mite allergy; some tree pollen formulations.

SLIT Drops (Off-Label): Multiple pollen allergies; mould allergies; pet dander (limited evidence); allergic asthma; paediatric allergies.

Benefits of Sublingual Immunotherapy

For Patients: Needle-free; convenience (home administration); flexibility (travel); very low risk of severe reactions; child-friendly; discreet.

Clinical Benefits: Symptom reduction; medication reduction; asthma improvement; disease modification; long-term relief; may prevent new allergies and asthma in children.

The SLIT Process at Dr. Raju's Allergy Centre

Step 1 – Evaluation: Medical history; allergy testing; physical exam; discussion of goals; candidate assessment.

Step 2 – Treatment Selection: SLIT tablets if allergies match (grass, ragweed, dust mites); SLIT drops for multiple or less common allergens; individualised dosing.

Step 3 – First Dose: Always under medical supervision; 30–60 minute observation; instructions for home use.

Step 4 – Home Administration: Daily dosing at same time; tablets: dissolve under tongue (10–20 sec); drops: hold 1–2 min then swallow; avoid food/drink 5–10 min after; no double dosing if missed.

Step 5 – Follow-Up: Initial 1–2 weeks; then every 3–6 months; symptom and adherence assessment; dose adjustment if needed.

Step 6 – Duration: Typically 3–5 years; long-term compliance essential.

What to Expect During SLIT

First Few Days: Mild local symptoms (itching/tingling under tongue, mild mouth swelling, throat irritation) common and typically resolve in 1–2 weeks.

First Few Months: Gradual symptom reduction; may still need rescue meds; consistent daily dosing crucial.

After 6–12 Months: Significant improvement; reduced medication need.

Long-Term: Continued improvement over 2–3 years; lasting tolerance; improved quality of life.

Potential Side Effects and Safety

Common Local (Mild): Itching/tingling under tongue, mild lip/mouth swelling, throat irritation, nausea—typically in first weeks, resolve with continued use.

Uncommon: Oral ulcers, moderate tongue swelling, worsening nasal symptoms—usually manageable with temporary dose adjustment.

Rare Severe: Anaphylaxis (much rarer than with allergy shots); severe throat swelling; severe GI symptoms. We provide training on recognising and managing these.

Safety Measures: First dose under supervision; clear instructions; emergency plan; regular monitoring; contraindications assessed.

SLIT in Children

Particularly well-suited for children. Advantages: Needle-free; easy home administration; very low risk; proven benefits; may prevent asthma; improved school attendance and activities. Age: Tablets typically approved for 5+ years; parental supervision essential.

Why Choose Dr. Raju's Allergy Centre for SLIT?

• Specialised Expertise: Deep understanding of SLIT applications
• Comprehensive Testing: Accurate allergy testing for treatment selection
• Individualised Approach: Personalised based on profile, age, lifestyle
• Patient Education: Thorough instruction on administration and safety
• Safety-First: Supervised first dose and emergency protocols
• Regular Monitoring: Ongoing follow-up
• Child-Friendly: Gentle approach for paediatric patients
• Convenient Care: Flexible scheduling

Frequently Asked Questions

How long to work? Some improvement within months; maximum benefit typically 6–12 months of daily dosing.

Continue regular medications? Initially yes; many reduce over time under guidance.

Miss a dose? Take next dose at regular time; do not double dose.

Eat/drink after? Avoid 5–10 minutes after dosing.

Safe during pregnancy? Discuss with doctor; continuation with monitoring possible; initiation typically avoided during pregnancy.

Travel? Yes; keep in original packaging with prescription label.

How long to continue? Standard: 3–5 years daily treatment.

Insurance? Coverage varies; our staff can assist.

Food allergies? Investigational; not routinely recommended outside research.

Reaction at home? Mild local common; contact office for concerning symptoms; severe requires emergency care.

Contraindications and Precautions

Who Should NOT Use SLIT: Severe uncontrolled asthma; active mouth sores, ulcers, or inflammation; eosinophilic esophagitis; beta-blocker use; certain autoimmune disorders; inability to comply with daily dosing; children below approved age.

Relative Contraindications: Pregnancy (initiation); severe systemic diseases; immunodeficiency; recent oral surgery or dental procedures.

SLIT vs. Other Treatment Options

After SLIT: What to Expect

Most continue to experience reduced symptoms; benefits often persist for years; regular follow-up; some may benefit from repeat treatment if symptoms recur; many gain lifestyle freedom.

"Sublingual immunotherapy has revolutionised allergy treatment by offering a safe, convenient, needle-free alternative to traditional allergy shots. For the right candidates, it provides the same disease-modifying benefits as conventional immunotherapy – retraining the immune system to tolerate allergens – without the need for frequent clinic visits. This is particularly transformative for children and adults who fear injections or have busy schedules."