Along with most of the southern Gulf Islands, plus various minor islands offshore from its southern end, the southern part of Vancouver Island is the only part of British Columbia (and of Western Canada) that lies south of the 49th Parallel.hile the city of Vancouver stands on the North American mainland, Victoria, the capital city of British Columbia, is located on the island. The island was first explored by Europeans when British and Spanish expeditions arrived in the late 18th century.
There are many causes of dry mouth. Dry mouth most commonly occurs as a side effect of medications that cause decreased saliva production, including high blood pressure medications, antihistamines, antidepressants, diuretics, nonsteroidal anti-inflammatories, narcotics, and many others.
Some drugs can reduce the amount of saliva in your mouth, causing an uncomfortably dry mouth (xerostomia). Without enough saliva, the tissues in the mouth can become irritated and inflamed. This increases your risk for infection, tooth decay, and gum disease. More than 400 medications are known to cause dry mouth. Dry mouth is also a side effect of certain chemotherapy medicines.