What is Alpha-Gal Syndrome?

Alpha-Gal Syndrome (AGS) is an allergic condition triggered by the bite of a Lone Star tick. It causes allergic reactions to galactose-alpha-1,3-galactose (alpha-gal), a sugar molecule found in most mammals. Symptoms typically appear 3-6 hours after eating red meat, pork, or lamb, and can range from hives to life-threatening anaphylaxis. According to the CDC, over 450,000 Americans may have developed AGS since 2010.

What foods should Alpha-Gal patients avoid?

Alpha-Gal patients must avoid all mammalian meat including beef, pork, lamb, venison, and bison. Many also react to mammalian by-products like gelatin (found in gummy vitamins and gel capsules), dairy products, and ingredients derived from mammals such as lard, tallow, and carrageenan. Safe alternatives include poultry (chicken, turkey, duck), fish, seafood, eggs, and all plant-based foods.

What medications are safe for Alpha-Gal Syndrome?

Many medications contain hidden mammalian ingredients. Gel capsules and softgels often contain bovine or porcine gelatin. Safe alternatives include tablets, caplets, liquids, and capsules made with vegetable-based HPMC. Always check inactive ingredients for gelatin, magnesium stearate (usually plant-derived in US), lactose, and stearic acid. VectorShield helps patients identify safe medication alternatives.

What are the 4 sensitivity levels of Alpha-Gal Syndrome?

Alpha-Gal sensitivity varies by patient: Level 1 (Mild, ~40%) - react only to mammalian meat; Level 2 (Moderate, ~30%) - also react to gelatin products; Level 3 (Significant, ~20%) - also react to dairy products; Level 4 (Severe, ~10%) - react to trace amounts and cross-contamination, sometimes called 'super reactors'. Sensitivity can change over time, especially with additional tick bites.

Can Alpha-Gal Syndrome be cured?

There is currently no cure for Alpha-Gal Syndrome, but many patients see improvement over time if they avoid additional tick bites. Some patients report tolerance returning after 1-5 years of strict avoidance and no new tick exposures. However, a single new tick bite can restart or worsen the condition. Management focuses on strict avoidance of trigger foods and carrying emergency medication like epinephrine.

Your Alpha-Gal safety toolkit

Everything you need to stay safe.

Name: VectorShield
Author: HutchWare, LLC

Medication checking, restaurant safety ratings, food analysis, community reports, and sensitivity profiles — all in one app, personalized to your sensitivity level.

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Medication checker

Know what's hiding in every pill.

Check any medication for mammalian-derived ingredients like gelatin capsules, magnesium stearate, and bovine-sourced excipients. Prescription and OTC coverage, with emergency meds always free.

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Medication categories and search in VectorShield

Restaurant safety database

Find places that won't make you sick.

377 restaurants and 8,400+ menu items analyzed — national chains and local favorites — each rated for your sensitivity level, with real cooking-fat data and community corrections.

Browse the database

Restaurant safety ratings in VectorShield

Built for everyday decisions

Databases, analyzers, and community tools that help you make safe choices every day.

Food safety analyzer

Analyze any food, menu item, or product for hidden mammalian ingredients. On-device classification keeps your data private.

On-device ingredient analysis
Menu item risk assessment
Meal history tracking
Personalized to your sensitivity

Community safety reports

Browse and submit restaurant safety reports from the Alpha-Gal community. Sign in with Apple to contribute, vote, and help build a shared database.

Verified contributor badges
Like / dislike voting on reports
Restaurant reviews & recipes
Content moderation built in

Sensitivity profiles

Every recommendation adapts to your specific sensitivity level — from meat-only reactions to super reactors who avoid trace amounts.

4 sensitivity levels
Personalized safety ratings
Dairy tolerance settings
Adapts all databases to you

At a glance

Clear safety indicators

Every result uses a simple color system so you know exactly what's safe for your sensitivity level.

Safe

No mammalian ingredients found

Caution

May contain ingredients that affect some patients

Avoid

Contains mammalian-derived ingredients

Unknown

Needs verification — report to community

App preview

Restaurant menu safety viewer

See how VectorShield analyzes restaurant menus for Alpha-Gal safety. Change the sensitivity level to watch the ratings adapt.

Chick-fil-A

American / Fast Food

Last verified: December 16, 2025

15 menu items analyzed

Your Sensitivity Level

Safety ratings adapt based on your sensitivity. Higher levels flag dairy, cross-contamination, and trace ingredients.

Summary:

13 Safe

0 Caution

2 Avoid

Original Chicken Sandwich

Poultry-based, pressure-cooked in refined peanut oil

SAFE

Spicy Chicken Sandwich

Poultry-based with spicy seasoning blend

SAFE

Grilled Chicken Sandwich

Grilled chicken breast, no mammalian ingredients

SAFE

Spicy Deluxe Sandwich

Poultry-based with lettuce, tomato, pepper jack cheese

SAFE

Cobb Salad

Contains bacon (pork) -- avoid at all sensitivity levels

bacon

AVOID

Chicken Nuggets (12 ct)

Breaded chicken breast, pressure-cooked in peanut oil

SAFE

Grilled Nuggets

Grilled chicken pieces, no breading

SAFE

Waffle Potato Fries

Cooked in canola oil, no mammalian ingredients

SAFE

Mac and Cheese

Pasta with cheese sauce -- contains dairy

SAFE

Chicken Noodle Soup

Chicken-based broth with noodles, no mammalian meat

SAFE

Fruit Cup

Fresh mixed fruit, safe for most sensitivity levels

SAFE

Chicken Biscuit

Chicken fillet on a biscuit, no mammalian ingredients

SAFE

Hash Brown Scramble Bowl

Default includes pork sausage -- AVOID or request chicken-only

pork sausage option

AVOID

Milkshake (Cookies & Cream)

Ice cream-based milkshake -- contains dairy

SAFE

Lemonade

Freshly made lemonade, safe for most sensitivity levels

SAFE

See all 326 restaurants in the app

The VectorShield app includes 5,240 menu items across 326 restaurants -- chains and local spots -- all analyzed for Alpha-Gal safety and personalized to your sensitivity level.

Personalized ratingsCommunity verifiedUpdated regularly

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Getting started

How it works

Three steps to safer eating, shopping, and living.

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Available on iOS with Apple Watch support

Set your sensitivity

Take the quiz or choose your level manually

Check anything

Medications, restaurants, and products — all rated for you

Research preview

Wearable monitoring we're studying

Reactions can show up hours after a meal, sometimes from ingredients food logging misses. We're researching whether wearable trends — heart rate, HRV, and personal baselines from Apple Watch and other devices — could one day help you notice patterns worth paying attention to. We hold this to a high bar: it's a research direction, not a medical device, and not a way to predict a reaction.

See what we're researching

Heart rate, HRV, and personal baselines from 5+ supported wearables — explored as a possible future signal, monitored on-device.

Heart rate trends

HRV analysis

Personal baselines

5+ wearables supported

Ready to stay safe?

Download VectorShield free and start checking medications, restaurants, and products today.

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