TRX2 Molecular Hair Growth Supplement contains only natural ingredients and therefore side effects and cross-interactions (e.g. with medications) are minimal. However, we can't advise you in medical terms. We advise elderly consumers to consult a doctor or healthcare professional before changing their diet (which would result from TRX2 supplementation), especially if they are on a special diet and/or take other medications (e.g. against hypertension, diabetes, etc.).