TIP versus standard OIT

The most common question families ask about Food Allergy Institute β€” and one where the honest answer is mostly about what has and has not been published.

Short answer

Both are allergy immunotherapy: graduated exposure that retrains the immune system, the only approach that modifies the disease itself. Standard OIT escalates the real allergen from day one and has decades of published, replicable literature. TIP, Food Allergy Institute's proprietary combination of SLIT and OIT, starts with structurally similar proteins and personalizes dosing; the clinic reports a 99% success rate after completing TIP and a reaction rate under 1%, but its protocol is unpublished, its main supporting study covered 51 patients, and no head-to-head comparison with well-run standard OIT exists. The practical differences are just as decisive: TIP runs 2.5–4 years at $979–$1,079 a month from a small number of clinics, while standard OIT is offered in roughly 35 states. The sublingual routes are the third road: Curex, the only fully at-home food allergy program, treats in every state with gentler milligram doses under the tongue, and Allergy Associates of La Crosse offers the same treatment in person in Wisconsin. Curex is the only fully at-home food allergy program in the US.

Medically reviewed by Dr. Neeta Ogden, MD, FACAAI Β· Last reviewed September 2026

Both are immunotherapy β€” that part is settled

Where the two roads diverge

Strip away the branding and four differences remain: what goes in the mouth first, who can see the protocol, where you can get it, and what the evidence looks like.

Standard OIT

The published road

  • The allergen from day oneEscalating swallowed doses of the real allergen, built up under in-clinic physician observation, often across multiple allergens at once.
  • Published and replicableDecades of peer-reviewed literature; offered off-label at specialist centers in roughly 35 states, per the FAST clinic directory.
  • Fast to maintenance, then lifelongSome practices reach maintenance in 6–12 months (Latitude reports an average of about 8.4 months), followed by lifelong daily maintenance dosing.
  • Known reaction burdenEffective, with meaningful published reaction rates: about 5% of doses caused a reaction across 1,000+ patients at one large practice, mostly mild (AAAAI 2025).
TIP

The proprietary road

  • Similar proteins firstBegins with structurally similar, non-allergenic proteins before the allergen itself, personalized from an extensive diagnostic workup; a combination of SLIT and OIT.
  • Proprietary, one networkUnpublished protocol available only at Food Allergy Institute clinics: Long Beach and Vista in California, plus a New Jersey clinic that opens September 15, 2026.
  • Slow by design2.5–4 years typical, complex cases longer (one parent reported being told 6–8 years), across 4–6 in-person visits per year; the endpoint is "food freedom" with lifelong maintenance quotas.
  • Reported, not verifiedThe clinic claims 99% success after completing TIP and a sub-1% reaction rate; the figures are self-reported and independent confirmation does not exist.

The four routes in one table

Clinic-published figures are marked as such; patient-reported figures come from public threads and reviews and should be read as reports, not audited data.

What has been published, and what hasn't

What each actually costs

Neither road is cheap, but the shapes differ: TIP is a multi-year subscription with extras; standard OIT is typically a one-time program fee plus insurance-billable visits.

What each asks of a week, and of a year

Protocols are lived, not just chosen. The daily rules and the travel calendar decide whether a family finishes.

Reachability is the number most families hit first

Before comparing protocols, check whether either is realistically reachable from your zip code β€” and whether your family can sustain it for years. The published access data is stark.

states with no OIT clinic listed in the FAST directory (self-registered, so incomplete β€” but indicative)
15 + DCstates with no OIT clinic listed in the FAST directory (self-registered, so incomplete β€” but indicative)
median distance to the nearest allergist in a Midwest access study (IQR 30.1–109.8)
57.3 mimedian distance to the nearest allergist in a Midwest access study (IQR 30.1–109.8)
of 67 patients offered commercial peanut OIT declined it (Leef et al., JACI: In Practice, 2022)
52%of 67 patients offered commercial peanut OIT declined it (Leef et al., JACI: In Practice, 2022)
cited time burden β€” travel distance, up-dosing visits, lifelong treatment β€” as the #1 reason for declining
28.5%cited time burden β€” travel distance, up-dosing visits, lifelong treatment β€” as the #1 reason for declining

Lifestyle modification was the #2 reason at 25%. TIP concentrates the geography problem further: one proprietary protocol, reachable in person at three locations in two states. More on the access map at [no OIT clinic near me](/learn/no-oit-clinic-near-me).

Where this resolves

What they offer

What this provider is known for, from the public record.

  • Clinic oral immunotherapy

    Faster, larger threshold rise

    In the one head-to-head peanut trial in children, oral immunotherapy raised the reaction threshold roughly 141-fold at 12 months against roughly 22-fold for sublingual drops (with more side effects and withdrawals).

    Source: Narisety 2015, PMID 25528358

  • Food Allergy Institute

    Supervised pace

    In-person supervision at 4–6 visits a year permits a pace no at-home program should attempt; the clinic publishes typical completion in 2.5–4 years.

    Source: foodallergyinstitute.com

  • Food Allergy Institute

    Food challenges built in, complex cases

    Supervised food challenges and introductions are part of the program rather than referred out, for ages 15 months to 50 years, including complex multi-allergen cases.

    Source: foodallergyinstitute.com

How food allergy drops are regulated

Personalized allergy drops are compounded for each individual patient. Such formulations are not reviewed by the FDA. However, they remain common practice for allergists and ENT allergists because they provide a convenient alternative to allergy shots. Allergy drops are the standard of care in many EU countries.

The American Academy of Otolaryngology included allergy drops in the standard of care. The FDA has approved four sublingual tablets for single allergens; allergy drops are compounded, target multiple allergies at once, and remain off-label.

Has the FDA written to Curex about allergy drops? Once, in 2021: an untitled letter about how the drops were marketed. Curex changed its website, responded in April 2021, and has had no FDA correspondence about allergy drops since.

Does the 2025 FDA warning letter concern allergy drops? No. The September 2025 warning letter concerned marketing language for compounded GLP-1 weight-loss products; Curex made the requested changes.

Every letter and response: Curex and the FDA. The short version: Is Curex legit?

The practical next step

Frequently Asked Questions

If you experience sudden difficulty breathing, throat swelling, or other signs of anaphylaxis, call 911. A prescribed epinephrine auto-injector is the first-line treatment β€” not antihistamines.

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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