Absorption of Transdermal Vitamins in Post Bariatric Surgery Patients


NOTE ---This Study is no longer recruitng patients.

Patients undergoing bariatric surgery often develop new vitamin and/or mineral deficiencies or exacerbate prior deficiencies after surgery. Several bariatric supplement products exist including oral tablets and transdermal patches. The purpose of this study is to observe the concentrations of serum micronutrients and determine how many deficiencies develop in patients who use a transdermal patch.

Interested? Contact Tyler Culpepper:


  • Patients will undergo either a sleeve gastrectomy or gastric bypass procedure.
  • All patients enrolled will have previously chosen to use the Patch MD MultiVitamin Plus patch for vitamin and mineral supplementation versus oral or other dosage forms of vitamins after surgery. 
  • Preoperative blood draws will be used to determine baseline micronutrient serum concentrations and existing deficiencies and collected at 3 months, 6 months, and 1 year after surgery.

For more details about study procedures, please contact the study team. 


  • 18 years and older
  • Candidates for a sleeve gastrectomy or gastric bypass surgery
  • Willingness and ability to provide informed consent in English
  • Commitment to the 1 year study period
For more details about eligibility requirements, please contact the study team. 


18 to 65
65 and over




Bariatric Surgery, Overweight, Obesity

Principal Investigator

Jeffrey Friedman, MD


Department of Surgery

Contact Information


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