Smoothie King • Add-Ins & Boosters
Smoothie King Immune Support Enhancer
Immune Support enhancer that can be added to any Smoothie King smoothie.
- Price
- Varies by location
- Calories
- 6
- Protein
- 0g
- Carbs
- 2g
- Fat
- 0g
Typical U.S. price: actual prices vary by location, franchise, and ordering platform.
Menu Labeling & Nutrition Information
2,000 calories a day is used for general nutrition advice, but calorie needs vary. Full nutrition information, including saturated fat, trans fat, cholesterol, sodium, sugars, and fiber, is available upon request from the restaurant and in the official nutrition guide. Calorie counts shown are approximate and based on official restaurant nutrition data; values may vary by location, preparation, and portion size.
Everything You Need to Know About the Immune Support Enhancer
The Immune Support Enhancer is immune support enhancer that can be added to any smoothie king smoothie. It comes in at 6 calories with 0g of protein, and is priced at Varies by location in the Add-Ins & Boosters section of the Smoothie King menu. Smoothie King is a smoothie chain with over 1,400 locations known for The Original, Angel Food, The Activator, Gladiator, Hulk. Our Smoothie King menu guide covers prices, nutrition info, deals, and secret menu items.
How the Immune Support Enhancer compares to similar Smoothie King items
| Immune Support Enhancer (this item) | Varies by location | 6 | — |
| Gladiator® Protein Enhancer | Varies by location | 25 | — |
| Peanut Butter | Varies by location | — | — |
| Banana | Varies by location | — | — |
| Energy Boost Enhancer | Varies by location | 6 | — |
Dietary & allergen information
Is the Immune Support Enhancer good value at Smoothie King?
Value depends on what you order alongside it. Pair it with the cheapest Smoothie King sides for the best total meal cost.
How to order the Immune Support Enhancer at Smoothie King
The Immune Support Enhancer is available at Smoothie King locations nationwide: dine-in, takeout, and in most markets delivery through the Smoothie King app or third-party services. Order through the official Smoothie King ordering page for pickup and delivery. Prices vary by location. Check the current full Smoothie King menu for the latest pricing.
Pro Tips for Ordering the Immune Support Enhancer
- 1Check current Smoothie King deals: Smoothie King Rewards — Points on Every Order.
- 2Prices have trended +6.7% vs 2025 on our tracking. Expect slight variation by location.
Tips compiled from customer reviews on Google, Yelp, Reddit, and our menu tracking data.
More Smoothie King menu items
Smoothie King secret menu items
Brownie Batter Blast · $9.49
Chocolate Gladiator blended with brownie bits and a scoop of peanut butter — tastes like cookie dough in a cup
How to order: Order a Chocolate Gladiator smoothie and ask to 'add brownie bits and a scoop of peanut butter.' Some locations have brownie add-ins at the counter.
The King's Protein · $9.99
Any smoothie with double protein and a banana blended in — a bodybuilder favorite
How to order: Order any protein smoothie and ask for 'double protein, extra banana.' Stores charge per protein scoop and per banana.
Coconut Coffee Fusion · $8.99
Caribbean Way blended with a shot of espresso — tropical cream with a caffeine kick
How to order: Order a Caribbean Way smoothie and ask them to 'add a shot of espresso.' Not all locations carry espresso, so call ahead.
PB&J Smoothie · $8.49
Peanut butter, strawberry, and banana blended together — a childhood classic in smoothie form
How to order: Order a Strawberry X-Treme and ask to 'add two scoops of peanut butter.' Some locations recognize the 'PB&J' request.
Payment & holiday hours
Accepted payment
- Credit & debit cards (Visa, Mastercard, Amex, Discover)
- Cash
- Gift cards
- Apple Pay & Google Pay
Holiday closures
- Thanksgiving
- Christmas Day
Typical closures: individual locations may vary. Confirm locally before visiting.
Immune Support Enhancer prices by city (estimated)
Prices vary by location. Estimates for the Smoothie King national-average pricing model:
- New York City: $8.95 (Estimated — urban premium operating costs — The Original)
- Los Angeles: $8.65 (Estimated — urban premium operating costs — The Original)
- Chicago: $8.15 (Estimated — higher operating costs — The Original)
- Houston: $7.65 (Estimated — lower operating costs — The Original)
- Atlanta: $7.85 (Estimated — on par with national average — The Original)
- Columbus: $7.50 (Estimated — lower operating costs — The Original)
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About Smoothie King
Smoothie King is a smoothie chain with over 1,400 locations known for The Original, Angel Food, The Activator, Gladiator, Hulk. Our Smoothie King menu guide covers prices, nutrition info, deals, and secret menu items. Browse full menu sections including smoothie classics, wellness blends, energy blends, add-ins & boosters. Current deals include Smoothie King Rewards — points on every order.
Smoothie King FAQ
What is the lowest-calorie item at Smoothie King?
What is the highest-protein item at Smoothie King?
Where does the Smoothie King nutrition data come from?
Prices and customer sentiment sourced from the official Smoothie King website, nutrition guide, and public reviews. Source: Smoothie King official nutrition — latest published, dated 2026-10-01