Welcome to 
Environmental Health and Allergy Center!

Switch from Sick Care to Wellness Care through Functional Medicine.

Do you have persistent symptoms that won’t go away? Are you at the point in your health journey where you’re wondering who can help you?

Here is what we do, and you can decide if we are a good match for you and your family.

Environmental Health and Allergy Center headed by Tipu Sultan MD, is a full-time facility dedicated to treating people suffering from chronic illness. For a partial list of conditions we treat, please click Conditions We Treat.

Our approach is different, we treat THE ROOT CAUSE through Functional Medicine.

The major benefits of such an approach are getting rid of the very symptoms that you are seeking care for instead of getting a band-aid through medications. 

As a preview of what functional medicine can do for you, please read our Success Stories.

Since 1979 (over 44 years) we have helped over 20,000 patients. Most of our patients had seen multiple physicians and tried multiple therapies and failed.

You may like to know how Dr. Sultan got interested in Function Medicine, get to know him and his story Click Here

Contact us if you have any questions, we are here to help! Contact Us


How Can We Help?

Welcome! The staff at EHC St. Louis and Tipu Sultan, MD are very happy that you are visiting our website. We'd love to walk the journey to wellness with you... Start Here!

Our Current Patients can find helpful resources including current patient forms, an online prescription refill form, frequently asked questions and more! If you need assistance at anytime, please do not hesitate to contact us. Start Here!

Most Common Conditions We Treat - Please Call For Full List Of Conditions

How is it possible to treat so many diverse medical conditions through Environmental Medicine approach?

Click Here For The Full List Of Conditions

The Key to Successfully Treating Your Problems

A comprehensive history and a thorough physical examination followed by appropriate tests, reveal the underlying causes of illnesses. Treatment methods are determined by the cause.

Click Here For The Full List Of Treatment Methods


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Success Stories

What Our Patients Say About Us

  • "Dr. Sultan encouraged me to go on a low carb diet after starting magnesium and thyroid medication. It has been almost one year and I have lost over 40 pounds. I no longer suffer from low energy, gas pain, and bloating, or yeast symptoms and I have never felt better."
    N.K. - December 2018
  • "Since I have been coming to Dr. Sultan I have more energy, less muscle aches, pains and most of all I have almost no more headaches thanks to the low-carbs diet I am following. The low-carbs diet has helped me with weight loss and mental clarity. Dr. Sultan has put me on the right path. Thank you! I sleep much better now!"
    C.M. - April 2018
  • "My overall success story with Dr. Sultan has been awesome! I have experienced so many great changes to my body. I am able to move about with not shortness of breath. My energy level has increased and no more tired days! Following, the insulin-resistance wellness program, the program has allowed me to decrease tremendously in my weight. I’m loving the balance and nutritional well-being it has blessed my heart, mind, and soul. I am grateful for the awareness, education, and knowledge of becoming a person with air, water, and food!"
    T.C. December 2018
  • "When I cam e to the office, I had depression, anxiety, night terrors and suicidal thoughts. I was diagnosed with manic depression. I got treated for yeast, low-thyroid, and magnesium deficiency. It has helped me with my depression, fatigue, and I can feel well again.” “Life is simple people make it difficult."
    S.B. - August 2018

Meet Your Doctor

  • Tipu Sultan
    Holistic Doctor

    Dr. Sultan began practicing medicine in the metropolitan St. Louis area in 1975 as a pediatrician. Beginning in 1979 he incorporated Environmental Medicine into his practice and since then has been treating children and adults suffering from many chronic ailments.

    Read More.

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Our Location

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Hours of Operation

Our Regular Schedule


10:00 am-6:00 pm


10:00 am-6:00 pm


8:00 am-4:00 pm


10:00 am-6:00 pm