Hi, Bioidentical testosterone hormones are defined as man made testosterone hormones that are very similar to the hormones produced by the male human body. These are then used as treatment for men whose own hormones are low or out of balance. Bioidentical testosterone and other testosterone products may cause an increase in blood pressure which can increase the risk of having a heart attack or stroke that may be life threatening. Consult your doctor if you have or have ever had high blood pressure, heart disease, a heart attack or a stroke. After administration of bioidentical testosterone in the body, high levels of testosterone can cause stress, blood pressure or blood vessels widening that may develop flushing of face or redness of face. If these side effects persist for long or bother you, then you should consult your doctor for medical help. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Zubayer Alam, General And Family Physician