Patented in 1947, Carbinoxamine is used to block a natural substance called histamine- A process that eventually reduces its effects in the body. It is worth noting that the symptoms produced by histamine are sneezing, itching, watery eyes, and runny nose. There are a few things that you need to take into consideration before using this drug. First off, you should not give Carbinoxamine to children younger than two years old as misusing it can lead to their death. It is, however, not known if this drug is safe during pregnancy, or if it will harm and unborn baby. Therefore, you need to let your doctor know that you are pregnant or that you plan on becoming pregnant before using Carbinoxamine. You must also consult your doctor beforehand if you have a stomach ulcer, asthma, high blood pressure or any other medical condition that might make the medicine in question less effective or even unsafe for you. According to drugs.com, Carbinoxamine “may cause blurred vision and may impair your thinking or reactions”, and so you’ll need to drive very carefully when you use it. You’ll also need to be alert when you do any other activity that requires concentration. As for the other side effects, they include dizziness, upset stomach, loss of coordination, tightness in the chest, and pounding heartbeats. Seeking medical attention when you have any of these side effects is highly recommended.