When acyclovir is used to prevent outbreaks of genital herpes, it is usually taken two to five times a day for up to 12 months. Take acyclovir at around the same times every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand.
A hormone is a chemical substance which helps regulate processes in the body. Hormones are always secreted by glands and travel in the bloodstream.Hormones are usually for one organ (often called the 'target organ').A Hormone can also be described as a chemical 'messenger'. hormone is a chemical substance which helps regulate processes in the body. Hormones are always secreted by glands and travel in the bloodstream. Hormones are usually for one organ (often called the 'target organ'). A Hormone can also be described as a chemical 'messenger'.
HORMONES Part 1, GCSE BIOLOGY SCIENCE. This video covers the basic of hormones (Endocrine System). After watching this video, you will be able to define chemical messenger, gland, target cells and receptors.Please subscribe, like, comment and share this video, THANK YOU SO MUCH:http://youtu.be/Pk__h1O1n2s.his video covers the basic of hormones (Endocrine System). After watching this video, you will be able to define chemical messenger, gland, target cells and receptors.