Best Prebiotic Capsules | Jetson Prebiotic Pills for Adults

Gut Prep Prebiotics

Gut Prep cannot be purchased alone. To buy Gut Prep please first add a Seasonal Probiotic to your cart

On your mark, get set, Gut Prep.

Gut Prep is Jetson's take on prebiotics for adults. Consider prebiotics the starting point for a healthy stomach—they are the non-living, non-digestible ingredients that feed all that good bacteria your probiotics are bringing you. Because prebiotics and probiotics work hand in hand, we recommend taking Gut Prep prebiotic capsules together with your first month of seasonal probiotics.

See Ingredients & Studies.

Gut Prep is not eligible for discounts.

Free Shipping

Free shipping to 48 Contiguous United States. Shipping fees will apply to Alaska, Hawaii, Canada.

No worry guarantee

If you don’t love Jetson, you don’t pay for it. If you need a break, you can skip, pause or cancel anytime.

Why We Made This

The gut is the body’s control center. That’s why people call it the second brain. An unhealthy gut can lead to poor digestion, weak immunity, chronic inflammation, bloating, low energy and poor sleep, to name a few. Only Jetson’s seasonal formulations give you the probiotic strains you need year round to combat these common ailments and keep a healthy gut.

The Blend

Gut Prep is a vegan prebiotic that uses a novel bacteriophage, causing your body to use the bad bacteria living in your gut as food for the good ones. Simultaneously, Gut Prep prebiotic capsules each place a starter dose 1B CFU of rugged, studied probiotics right to your gut.


If you're new to probiotics, or if processed foods have done serious damage to your gut, we highly recommend taking Gut Prep prebiotic capsules in conjunction with your first month of seasonal probiotics.

Key Ingredients

Prebiotic blend

Bacteriophage prebiotic that reduces bad bacteria and supports the growth of good ones.

Bacillus subtilis

Clinically shown to repopulate levels of good bacteria and promote healthy intestinal balance


Specially designed capsule to get the contents through the stomach, to the gut.

FDA Disclaimer:
*The information, advice, statements, and testimonials have not been evaluated by the United States Food and Drug Administration (FDA). The information on this site and the products listed are not intended to diagnose, treat, cure or prevent disease, nor are they intended to replace proper medical help. It is always recommended to consult with a healthcare professional before starting any regimen of probiotics.

What You'll Get

On the Cutting Edge

Gut Prep’s bacteriophage means we don’t have to use starch or fiber like other prebiotic capsules, because they can cause uncomfortable bloating and gas.

Proprietary Capsule Delivery

Our specially formulated capsule is designed to withstand stomach acid - keeping the bugs alive until they reach the intestinal tract where they’re needed.

No Lame Stuff

No allergens, vegan, non-GMO, no preservatives and no sugar. Our products are as boring as you’d want your prebiotics to be.

Solid Glass Bottles

Our bottles are reusable, recyclable and protect pills from moisture.