MD on staff Dr. Paul C. Tack (Medi Spa) Gurnee, IL Dr. Paul C. Tack's medical spa in Gurnee offers hormone replacement therapy and testosterone replacement therapy for men and women, alongside medical weight-loss programs and vitamin-injection protoc… Vitamin IV Therapy Peptide Therapy Erectile Dysfunction (ED) Treatment Hormone Replacement Therapy (HRT) Testosterone Replacement Therapy (TRT)