I am 19 and think that I may be developing a Norwood Class 6 or 7 pattern.

If you are heading to a Class 6 or 7 at the age of 19, although it is unlikely that the drug finasteride will prevent this, it is still worth a try. Maybe you are not heading to the Class 6 or 7 pattern and inherited a different pattern that is not so advanced. There is no way to really tell. Most people don’t know that these advanced patterns almost always happen before a young man reaches 26 years of age.