Dr. Kathryn Retzler has developed a line of private-labeled supplements to make sure you receive unsurpassed, quality formulas that are affordable and effective. All supplements that bear a HormoneSynergy® label are manufactured in facilities that have pharmaceutical or NSF certification and are certified for good manufacturing practices (cGMP). It's important to keep in mind that not all products are alike, no matter what the label or packaging may claim.  All HormoneSynergy® formulas are manufactured by companies that perform product analysis to verify safety, potency, and bioavailability. Several HormoneSynergy® supplements have undergone clinical trials to ensure efficacy, and all HormoneSynergy® supplements are used by Dr. Retzler in her private practice.*



NeuroMag | Magnesium L-threonate plus Magtein | Optimized for Brain Health* | 60  Servings
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Umbrellux® DAO is a patente...
S-Acetyl Glutathione | 120 Acid-Resistant Veg. Capsules | Acetylated Form of Glutathione
Save 36%
S-Acetyl Glutathione is an ...
$88.31 $56.95
ULTRA Pure High Potency Fish Oil
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Ultra Pure High Potency Fis...
$55.35 $41.95
HormoneSynergy® is proud to...
DopaMax (Blend) | 60 vegetarian capsules
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HormoneSynergy DopaMax is d...
$34.95 $29.70
Probiotic Synergy Daily DF | Four strain 30 billion CFU probiotic | 30 Acid Resist DRCaps
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HormoneSynergy UbiQuiMax Co...
UltraCleanse Plus | Optimal Cleansing Formula* | Vanilla Delight | 24 grams protein
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UltraCleanse™ Plus provides...
$54.99 $44.95
Glutamine Synergy | Powerful Gastrointestinal Lining Support* | 9.27 oz. (259.8 g) Powder
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5-HTP SR has a delivery sy...
Metabolic Recovery  Formula Chocolate | Gastrointestinal, Hepatic and Intestinal " GHI " Support
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Metabolic Recovery  Formula Vanilla | Gastrointestinal, Hepatic and Intestinal " GHI " Support
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DopaMax Mucuna Pruriens Seed Extract 40% L-Dopa | 120 ea. 300 mg capsules
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Dopamine is a neurotransmit...
$29.95 $19.95
Relax Synergy Cherry
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RelaxSynergy is an innovati...
$40.70 $36.95

*These statements have not been evaluated by the United States Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent disease. The information provided about this or any HormoneSynergy® nutritional supplement or any information contained on or in any product label or packaging is for informational purposes only and is not intended as a substitute for advice from your own physician or health care professional. You should always consult with a licensed healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem. As with any nutritional supplement do not take if you are pregnant or nursing or while taking medications without consulting your healthcare practitioner.