Your immune system has an important job: to keep you healthy, strong and awesome. Targeted vitamins and supplements give your body an extra edge so you spend more time thriving.

Ways To Strengthen Your Immune System

Your lifestyle is your first line of defense. Eat a diet rich in diverse whole foods, move often, sleep well, minimize stress and, y’know, wash your hands. But sometimes, it’s hard to follow healthy habits or get enough nutrients from your diet alone. So, your immune system takes a hit. Your immune system can also weaken as you grow older.[6] Thanks, aging.
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Bulletproof makes it easy to be strong and feel your best. Get clinically-backed doses of key vitamins and nutrients so you can stay at the top of your game.
Bulletproof Vitamins A-D-K - 30 Ct.

Vitamins A-D-K

Regular price $39.95
Essential vitamins, better together: Get science-backed doses of vitamins A, D and K in a high-potency Brain Octane softgel to help support your heart, bones, immune function and more.

How it works

  • Vitamin D plays a critical role in calcium absorption into the bloodstream, and it needs vitamin K to maximize those benefits. Vitamin A works with vitamin D to support immunity.
Bulletproof Glutathione Force - 90 Ct.

Glutathione Force

Regular price $49.95
A more resilient you. Strengthen your body against the toxins and stress of everyday living with glutathione, your body’s master antioxidant.

How it works

  • You naturally produce glutathione, but your environment, food and stress can drain your glutathione stores.
  • Glutathione Force promotes glutathione levels, supports immunity and protects your cells so you can feel great and perform at your peak.
Bulletproof InnerFuel Prebiotic - 13.4 oz.

InnerFuel Prebiotic

Regular price $39.95
Proprietary blend of clinically-backed prebiotics for super-powered gut bacteria, digestive health and immune support.

How it works

  • Prebiotics feed probiotics, the good bacteria in your gut. A healthy gut biome supports immunity and digestion.
  • InnerFuel contains a plant-based prebiotic powder called Larch Arabinogalactan for immune support.
Bulletproof Coconut Charcoal - 90 Ct.

Coconut Charcoal

Regular price $24.95
Take a detox shortcut. Coconut Charcoal traps toxins and flushes them out of your body so you can get back to being awesome. Take it when you’re traveling, overindulging or dealing with an upset stomach for fast relief.

How it works

  • Toxins are everywhere. Coconut Charcoal binds to positively-charged toxins and helps remove them from your body.
  • Take it when you’re traveling, overindulging or dealing with an upset stomach for fast relief.
Bulletproof Zinc with Copper, 60 count

Zinc with Copper, 60 count

Regular price $14.95
Support your immune system, hormones, heart and more with science-backed doses of zinc and copper for whole-body benefits.

How it works

  • Zinc plays a vital role in your entire body. Among other important jobs, it supports healthy cell function to keep your immune system strong.
  • Zinc and copper work better together. They balance each other out and create a powerful antioxidant enzyme to help you battle stress.

Frequently Asked Questions

Bulletproof supplements are backed by the most cutting-edge research and sourced from the best ingredients possible to kick your performance into overdrive. All Bulletproof supplements are 100% non-GMO, soy- and gluten-free, with no artificial colors, preservatives or any other junk. They also undergo strict lab testing to ensure they meet our rigorous quality standards for purity and potency. The bottom line: They’re next-level supplements for next-level you.

Yes. A huge proportion of your immune system is actually in your GI tract.[7]

We’re still in the early days of understanding how your gut bacteria interact with your body’s immune system. Early research suggests that your gut bacteria help keep microorganisms in balance and remove environmental toxins from the body.[8] [9]

Prebiotics feed probiotics, the good bacteria in your gut. Getting more prebiotics in your diet helps support healthy digestion, nutrient absorption and immunity — plus, it keeps you regular.[10] [11]

You can get prebiotics in fiber-rich foods like asparagus, broccoli, onion, green bananas and chicory. When it’s hard to get enough fiber-rich foods, take a prebiotic supplement like Bulletproof InnerFuel.

Exercise can help support your immunity in the following ways:[12]

  • Physical activity can flush bacteria out of your airways
  • Exercise stimulates your antibodies and white blood cells to circulate more rapidly, which may help your immune system detect illness earlier
  • Raising your core body temperature during exercise can help prevent bacteria from growing
  • Exercise is a great way to manage stress, and stress is associated with a greater risk of illness.

There are tons of reasons you might get sick. It might be your diet, environment, stress, lack of sleep, age, genetics or even an underlying health condition. If getting sick feels like a habit, talk to your doctor. Set yourself up for success with a strong foundation:

  • Physical activity can flush bacteria out of your airways.
  • Exercise stimulates your antibodies and white blood cells to circulate more rapidly, which may help your immune system detect illness earlier.
  • Move more often
  • Get adequate sleep
  • Stay hydrated
  • Minimize stress

Certain foods may help support your immune system:

  • Leafy green vegetables like spinach, kale and Brussels sprouts: Rich in vitamins and nutrients, like vitamins C and A, and excellent sources of fiber

  • Ginger: May soothe you when your immune system is working hard[13]

  • Nuts and seeds: Rich sources of vitamin E, a fat-soluble vitamin that is crucial for immune function

  • Colorful foods like carrots, sweet potatoes and squash: High in compounds called carotenoids, which your body turns into immune-boosting vitamin A

  • Fatty fish like salmon and tuna: Sources of vitamin D

  • Tea and coffee: Rich in flavonoids, a type of antioxidant

  • Lean poultry: Source of B vitamins, which support the formation of red blood cells, and iron, which helps your body carry oxygen to cells

  • Garlic: Strong antibiotic and antifungal properties[14]