Gabaneuron NT-100 Tablet contains Gabapentin and Nortriptyline and is used to treat nerve-related pain. Most people do not develop high blood pressure or abnormal heart rhythm while taking this medicine. However, Nortriptyline may sometimes affect the heart in certain individuals. It may lead to a faster heart rate, palpitations, or, in rare cases, an irregular heartbeat. It can also cause dizziness on standing due to a drop in blood pressure rather than an increase. Gabapentin is not usually linked with changes in blood pressure, pulse rate, or heart rhythm. These effects are more likely in people who already have heart disease, are older, or are taking other medicines that affect the heart. If a person notices a very fast pulse, an irregular heartbeat, chest discomfort, fainting, or severe dizziness, they should seek medical advice without delay. Overall, these side effects are uncommon, but being aware of them and reporting any unusual symptoms early is important for safe treatment.