SN instructed patient / caregiver regarding medication Bystolic. SN explained to patient / caregiver that Bystolic is used to treat high blood pressure ( hypertension ). SN explained to patient that the side effects of this medication includes: headache, dizziness, tiredness, nausea, slow heartbeat and trouble sleeping. SN instructed patient / caregiver that if any of these effects persist or worsen, to notify physician.