What medicine is minoxidil? Is it safe?

Minol was originally found to be an excellent vasodilator, which can be used to treat hypertension. After that, Minol became an excellent antihypertensive drug at that time. After oral administration, it began to reduce blood pressure about 1 hour, and the maximum antihypertensive effect appeared in 2~3 hours, which could last for more than 24 hours. However, after more and more people use Minol, they find a common side effect, that is, the user's hair has increased a little and local hirsutism has appeared. Finally, after a series of research, patent certification and clinical trials, Minol has become a professional drug to treat alopecia, but its antihypertensive effect has been forgotten under the impact of other new drugs.