Get In Touch

We'd Love to
Hear From You

Questions about our protocols, your gut health journey, or anything else — our team is ready to help you find the right path forward.

How Can We Help?

Whether you're new to probiotics, looking for guidance on which protocol suits your health goals, or have questions about an existing order — our team is here for you. We typically respond within one business day.

Email Support hello@tundrex.co
Response Time Within 1 business day
30-Day Guarantee Not satisfied? We'll make it right.

Common Questions

Which product should I start with? +

For most people, Immunity Boost is the ideal starting point. If you've recently taken antibiotics or have a diagnosed GI condition, Microbiome Recovery or our GIT Protocol may be more appropriate. Contact us for a personalized recommendation.

How long until I see results? +

Many customers report noticeable improvements in digestion and energy within 2–4 weeks. Deeper microbiome restoration typically takes 2–3 months of consistent use.

Does Tundrex require refrigeration? +

No! Bacillus subtilis is a spore-forming probiotic, meaning it is highly stable at room temperature. No refrigeration needed — perfect for travel and everyday life.

Send Us a Message

Fill out the form below and we'll get back to you within one business day.

Your information is secure and will never be shared with third parties.

Bacillus subtilis is the best organism I have yet worked with — its capacity to modulate immune function and restore gut integrity is remarkable.

— Dr. Leo Galland, MD · New York