Older adults naturally have a lower amount of albumin, which is a protein that aids in mediation metabolism. For example, some medications, like propranolol, bind to protein sites. Propranolol is often given for high blood pressure, chest pain, or atrial fibrillation. When the patient takes up less binding sites, the medications takes up more sites and toxicity can occur in the patient. For a patient taking Propranolol, his or her blood pressure may drop more than needed is the dose isn’t adjusted with age (Arcangelo et al., 2017, p. 74). 
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