There are many medications that can raise your blood pressure. Some of the most common culprits according to Wexler are over the counter (OTC) medications such as non-steroidal anti-inflammatory drugs (NSAIDS), ADHD medications, and even decongestants. It’s rare, but even too much black licorice could raise your blood pressure. Learn more by reading MedShadow’s Are Changes in Your Blood Pressure a Side Effect of Medications.