It is important that your family doctor check your progress at regular appointments to make sure that this drug is help you and to check for unwanted effects.
Do not take other medication unless they have been discussed with your family doctor . This especially includes over-the-counter - nonprescription medication for appetite control, asthma, colds, cough, hay fever, or sinus problems, since they may interfere with the effects of this drug.
Phenoxybenzamine may cause some people to become dizzy, drowsy, or less alert than they are normally. This is more likely to happen when you begin to take it or when you increase the amount of drug you are taking Make sure you know how you react to this drug before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert .
Dizziness, lightheadedness, or fainting may occur, especially when you get up from a lying or sitting position. Getting up slowly may help , but if the problem continues or gets worse, check with your family doctor.
The dizziness, lightheadedness, or fainting is also more likely to occur if you drink alcohol, stand for a long time, exercise, or if the weather is hot While you are taking this drug, be careful in the amount of alcohol you drink. Always use extra care during exercise or hot weather or if you must stand for a long time .
Before having any kind of surgery - including dental surgery or emergency treat, tell the family doctor or dentist in charge that you are using this drug .
Phenoxybenzamine may cause dryness of the mouth, nose and throat. For temporary relief of mouth dryness, use sugarless candy or gum, melt bits of ice in your mouth, or use a saliva substitute. However, if dry mouth continues for more than 2 weeks, check with your family doctor or dentist. Continuing dryness of the mouth may increase the risk of dental disease, including tooth decay, gum disease and fungus infections.