While side effects of Rogaine tend to be rare, individuals who are sensitive to the medication may experience symptoms such as itchy skin, inflamed hair roots and facial swelling, explains Drugs.com. If excessive amounts of Rogaine are absorbed by the body, side effects can include chest discomfort and visual disturbances.
Additional potential side effects of Rogaine include irritation at the site of topical application, excess facial hair, swollen hands and hindered breathing when lying down, explains WebMD. While rare, individuals who are treated with Rogaine may also experience severe allergic reaction symptoms such as skin rashes, vertigo and swelling of the tongue and throat. It is important for individuals experiencing unusual or severe side effects following the application of Rogaine to seek immediate medical assistance.
Rogaine contains minoxidil, an ingredient that stimulates shrunken hair follicles and encourages new hair growth, explains Rogaine. Within two weeks of applying the treatment, it is common for users to experience shedding of older, thinner hairs. Once the thin hairs have been shed, the medication works to expand the side of the hair follicles, resulting in thicker hair growth. It can take up to four months for new hair to grow in when the treatment is used as directed.