DRUG CLASS AND MECHANISM: Diphenhydramine is an antihistamine used for treating allergic reactions. Histamine is released by the body during several types of allergic reactions and--to a lesser extent--during some viral infections, such as the common cold.
Symptoms Symptoms of lactose intolerance. The symptoms of lactose intolerance can occur after youâve eaten or drunk something that contains lactose. Symptoms of lactose intolerance may include: 1  feeling bloated. 2  pain or cramps in your tummy (abdomen). 3  diarrhoea. 4  wind. 5  feeling sick.
If you have lactose intolerance, you may love milk, but your body doesn't -- and it lets you know that when you have too much. You might have symptoms like cramps after a bowl of cereal or gas after an ice cream treat.Lactose is the main sugar in milk and other dairy products.If you have lactose intolerance, you can't digest it well. Lactose intolerance is not curable, but there are many ways to cut your symptoms and feel better.ou might have symptoms like cramps after a bowl of cereal or gas after an ice cream treat. Lactose is the main sugar in milk and other dairy products. If you have lactose intolerance, you can't digest it well. Lactose intolerance is not curable, but there are many ways to cut your symptoms and feel better.