Probiotic Synergy Control with HOWARU® B420 | Gut & Weight Support

RetzlerRx® Probiotic Synergy Control is a doctor-formulated probiotic supplement featuring HOWARU® Bifidobacterium animalis subsp. lactis B420, a clinically validated probiotic strain studied for its role in supporting gut health, immune balance, and healthy body composition.*

Unlike generic probiotics, Probiotic Synergy Control delivers a targeted, science-backed strain designed to promote digestive comfort, microbiome balance, and metabolic wellness.* Whether you’re seeking a probiotic for gut health, a weight management probiotic, or a doctor-designed microbiome support formula, this advanced blend provides focused daily support you can trust.*

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Key Features & Benefits

• Clinically Validated Probiotic – HOWARU® B420 has been studied for support of gut health, immune balance, and healthy weight management.*
• Gut Health Support – Helps maintain microbiome balance and digestive comfort.*
• Weight Management Support – Studied for its role in supporting healthy body composition.*
• Immune Balance – Supports gut barrier integrity and immune resilience.*
• Doctor Formulated – Designed with precision using principles of functional and longevity medicine.
• Clean Formula – Non-GMO, gluten-free, dairy-free, and vegan-friendly.

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Key Ingredients

HOWARU® B420 is a clinically studied strain of Bifidobacterium animalis subsp. lactis selected for its role in supporting microbiome balance, digestive wellness, and healthy body composition.*

Targeted probiotic strains like B420 are used to help support the gut barrier, digestive comfort, and the broader gut-metabolic axis that connects microbiome health with immune and metabolic wellness.*

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Why RetzlerRx®

RetzlerRx® supplements are developed within the HormoneSynergy® Longevity Medicine ecosystem using principles of Evidence-Based Preventive Longevity Medicine. Each formula is selected for ingredient quality, clinical relevance, and real-world patient use within a physician-guided care model.

• Practitioner-formulated nutritional support
• Clinically relevant ingredient selection
• Designed to complement preventive longevity medicine strategies
• Focused on high-quality, clean-label formulations

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Suggested Use

Take one capsule daily, or as directed by your healthcare provider.

RetzlerRx® Probiotic Synergy Control with HOWARU® B420 is your science-backed solution for gut health, immune balance, and healthy weight management support.*

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Frequently Asked Questions

What does Probiotic Synergy Control support?

This formula is designed to support gut health, microbiome balance, digestive comfort, immune resilience, and healthy body composition.*

What is HOWARU® B420?

HOWARU® B420 is a clinically studied probiotic strain of Bifidobacterium animalis subsp. lactis used to support gut health, immune balance, and healthy weight management goals.*

How is this different from a general probiotic?

Probiotic Synergy Control features a targeted probiotic strain selected for specific clinical relevance rather than a generic broad-label probiotic blend.*

Can probiotics support weight management?

Certain probiotic strains have been studied for their role in supporting healthy body composition and metabolic wellness as part of a broader lifestyle program.*

Who may benefit from this supplement?

Individuals seeking targeted support for digestive health, microbiome balance, immune resilience, and healthy body composition may benefit from this formula.*

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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

HormoneSynergy® Longevity Medicine
Portland • Lake Oswego • Oregon
Evidence-Based Preventive Longevity Medicine