What Is the Allergy Shot Called? Why There Is No Brand Name

Allergy shots (subcutaneous immunotherapy, SCIT) do not have a brand name because each patient's vial is a custom-compounded pharmaceutical, not a mass-manufactured drug. Your allergist orders individual allergen extract concentrates from FDA-licensed manufacturers — primarily Greer Laboratories, ALK-Abello, and Stallergenes Greer — and mixes them into a formulation personalized to your specific allergy test results. The resulting vial has no brand name, only a patient-specific label with your name, allergen contents, concentration, and expiration date. This is fundamentally different from, say, a statin or an inhaler, which are manufactured in standardized doses and sold under brand names to any patient with the relevant indication.

SLIT tablets — Grastek (Timothy grass), Ragwitek (short ragweed), and Odactra (dust mite) — have brand names because they are manufactured as standardized, single-allergen FDA-approved pharmaceutical products. Each tablet contains a fixed, consistent dose of one allergen (or one dust mite species pair for Odactra), manufactured centrally by Merck and distributed to pharmacies. Allergen immunotherapy shots, by contrast, must be custom-compounded for each patient because no two patients share the same combination of allergen sensitivities, the same target doses, or the same compatible vial groupings. The customization that makes SCIT broadly applicable across any allergen combination is precisely what prevents it from being manufactured as a standardized branded product.

No, Kenalog (triamcinolone acetonide) is a corticosteroid injection, not an allergy shot. Many patients who receive Kenalog injections at the start of allergy season call them 'allergy shots' because the injections temporarily reduce allergy symptoms — but this is a dangerous misnomer. Kenalog works by suppressing broad immune and inflammatory activity for 3-6 weeks. It is a steroid with documented risks including adrenal suppression, bone density loss, elevated blood glucose, and weight gain with repeated use. AAAAI and ACAAI guidelines explicitly discourage routine Kenalog injections for allergic rhinitis because of these risks and because they provide zero disease modification. Allergen immunotherapy shots, by contrast, contain purified allergen extracts — no steroids — and produce lasting immune changes over 3-5 years.

Xolair (omalizumab) is a subcutaneous injection for allergic disease, but it is not allergy immunotherapy. Xolair is an anti-IgE monoclonal antibody biologic — it binds to IgE in circulation, reducing the amount available to arm mast cells and basophils. This reduces allergic reactivity broadly across all allergens simultaneously, without any allergen-specific tolerance induction. Xolair is FDA-approved for moderate-to-severe allergic asthma, chronic urticaria, and food-triggered allergic reactions in patients aged 1 and older. It is given every 2-4 weeks indefinitely — stopping Xolair returns the patient to baseline reactivity. Allergen immunotherapy, by contrast, induces lasting allergen-specific tolerance through a 3-5 year course and may produce durable benefits after stopping.

The allergen extract concentrates used in allergy shots are manufactured by a small number of FDA-licensed biological product manufacturers. The major US suppliers are Greer Laboratories (Lenoir, NC), ALK-Abello (Danish company with US operations), and Stallergenes Greer (a merged entity). These manufacturers supply both standardized extracts — which have consistent potency measured in BAU or AU and exist for cat, dust mites, major grass pollens, ragweed, and Hymenoptera venoms — and non-standardized extracts for trees, other weeds, molds, and dog dander. Your allergist orders from these manufacturers and compounds the final patient-specific vials in-office under AAAAI/ACAAI compounding guidelines and aseptic conditions.

You cannot purchase allergy shot vials at a retail pharmacy the way you would pick up a prescription antibiotic or an OTC antihistamine. Allergy shot vials are custom-compounded by your allergist's office from individually ordered extract concentrates — they are not stocked by pharmacies because no standardized formula exists across patients. The allergen extract concentrate supplies used to make your vials are purchased by your allergist's practice directly from licensed biological manufacturers. SLIT tablets (Grastek, Ragwitek, Odactra) can be prescribed and filled at specialty or retail pharmacies because they are standardized single-allergen FDA-approved products — but these are the sublingual tablet form of immunotherapy, not injection-based allergy shots.

For insurance billing purposes, allergy shots are coded using CPT (Current Procedural Terminology) codes rather than brand names. The most relevant codes are CPT 95165 for professional services for allergen immunotherapy (preparation of extracts), CPT 95115 for a single injection administration visit, and CPT 95117 for an administration visit with two or more injections. Allergy skin testing is billed separately under CPT 95004 (percutaneous testing) or CPT 95024 (intracutaneous testing). Your insurance explanation of benefits (EOB) will reference these CPT codes, not any product brand name, because allergy shots are billed as physician services and compounded biologics rather than pharmaceutical products.