Testing and Supplements

Our goal is to help you achieve healthy human longevity. This can be done with the assistance of testing — which can give insight into what’s happening within your body so you can improve your health and lifespan — as well as supplements, which fight low energy, aging, body composition changes, depression, loss of libido, and much more. 

Look Great, Feel Great

Many of our patients first visit us feeling tired, defeated, and ready to make a change. After treatment, we are happy to see our patients transformed, confident, and ready for their next journey. Beauty Within offers much more than med spa services. We are a science-backed wellness and anti-aging center that is offering an entirely enhanced lifestyle. We incorporate Dr. Gretzula’s clinical experience with stress management, medication, nutrition, and diagnostic testing to get you looking and feeling your absolute best.

Benefits of Taking Supplements

  • Ensure you’re receiving enough proper nutrients
  • Help with weight management 
  • Help athletes perform better
  • Reduce risk of chronic disease
  • Improve your cognitive abilities
  • Helps lower depression
  • Provides an immunity boost
  • Improves your sleep habits
  • Boosts health in general  

“Dr. Gretzula makes me feel comfortable. His examination is thorough. I have faith in him. I look forward to seeing him, and I don’t feel that way about many doctors. He is very kind and empathetic. It is a wonderful environment. He is very punctual. I have never had a problem with the effectiveness of his treatment.” 

Merle W.

Supplements at Beauty Within

Anti-Aging Supplements

  • Increased healthspan
  • Arrest senescence

Precision Supplements

  • Personalized design

    Wellness Supplements

    • Sleep
    • Stress and calming
    • Gut microbiome

      Peptide Therapeutics

      • Anti-aging
      • Weight loss
      • Stress management
      • Metabolic control
      • Mitochondrial senescence
      • Sexual enhancement
      • Endurance
        • Exercise and increased skeletal muscle mass
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      • Skin nutrition
      • Anti-aging


      By understanding your body, you can create a treatment plan for how to feel your best and live life to the fullest. Our lab testing can provide insight into how your lifestyle affects your health; predict which chronic diseases you are susceptible to; give you a comprehensive knowledge of how your body functions, and can offer a clearer picture of your overall health and wellbeing.

      We offer:

      • Microbiome testing: Gut microbiome optimization
      • Nutritional testing: Allergic response to foods
      • TruDiagnostic™: Epigenetic biomarkers for biological aging
      • Nutrigenomics: Genetic testing for personalized nutrition
      • Skin biologic testing kit: Cosmetics and antiaging products designed specifically for you based on your skin aging markers
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      Why Choose Beauty Within?

      Founded by Dr. Joseph Gretzula, D.O., a board-certified dermatologist with over 39 years of experience in the medical field, Beauty Within is here to get you on the path to true wellness and anti-aging. We offer free consultations to explain further what we can do for you. If you feel defeated, exhausted, and are ready to make a change, we encourage you to book your experience with us today at our beautiful and tranquil location on the Intracoastal in Palm Beach County.

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      Let us enhance the beauty within youSchedule a Consultation

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      Accessibility: If you are vision-impaired or have some other impairment covered by the Americans with Disabilities Act or a similar law, and you wish to discuss potential accommodations related to using this website, please contact our Accessibility Manager at (561) 437-3455.
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