Using Kirkland Minoxidil, does it work and any health issues?

The active ingredient in either product is Minoxidil. Since the patent expired in 1996 several other companies can produce it. Competition will drive down price. Some of the side effects from using this drug are allergic reactions, such as: changes in body hair; excessive hair growth; mild weight gain; nausea; vomiting. Other, potentially more severe symptoms can occur. See the website below.