Vitamin A. Vitamin A is also known as retinol and has several important functions. These include: 1  helping your immune system to work as it should against infections. 2  helping vision in dim light. 3  keeping skin and the linings of some parts of the body, such as the nose, healthy.
How long does a Valium high last. A Valium high will probably only last about 4 hours, maybe a little longer depending on the dosage of the medication. Some users report that the high lasts longer, with some noticeable effects a day or two later, but this doesnât seem to be common.
Valium Long-Term Effects. Heavy use of Valium over an extended period of time can have powerful effects on the brain and body. These effects can be permanent and, in some cases, life-threatening. The long-term effects of Valium include: 1  Memory loss.