Fentanyl is available as a skin patch, lozenge, pills, shots, a film that dissolves in your mouth, nasal spray, or by IV (intravenous) . Use fentanyl exactly as prescribed by your doctor. This is very important so that you do not get too much of the drug.entanyl is available as a skin patch, lozenge, pills, shots, a film that dissolves in your mouth, nasal spray, or by IV (intravenous) . Use fentanyl exactly as prescribed by your doctor. This is very important so that you do not get too much of the drug.
Some medical conditions can cause low blood pressure. These include: 1  Pregnancy. 2  Because a woman's circulatory system expands rapidly during pregnancy, blood pressure is likely to drop. 3  This is normal, and blood pressure usually returns to your pre-pregnancy level after you've given birth.
Symptoms of high blood pressure, such as fatigue, often occur as a result of improper circulation of blood and oxygen in the body, which can damage vital organs such as the brain, heart and kidneys.igh blood pressure (also known as hypertension) is a health condition that can go unnoticed for a long period of time until symptoms progress to the point where they interfere with an individual's daily routine. Listlessness and fatigue are typical symptoms for individuals suffering from untreated high blood pressure.