You should check with your doctor about this problem. Sometimes the patches can be cut down smaller to apply less drug dosage. In some cases headache medication can be taken. For some patients the headaches get less over time so they decide to wait it out.
Pay attention to any other side effects you may be having. Nitroglycerin can also cause dizziness, weakness, and skin rash. The doctor will need to know about any of these as
well.