Minoxidil, whether used topically or orally, has the same fundamental role: to stimulate and enhance blood flow.
Β
The difference between is that topical minoxidil is FDA-approved for hair loss treatment, whereas oral minoxidil is not. That is not because one is more efficacious than the other (although most studies indicate that oral minoxidil is more effective) but rather because topical has more data and research done behind it at the moment. Results from studies on:Β Minoxidil 1 mg oral versus minoxidil 5% topical solution for the treatment of female-pattern hair loss: a randomized clinical trialΒ reveal that low-dose oral minoxidil provides improvement of female pattern hair loss that does not differ from topical minoxidil 5% solution. (Ramos, Paulo MΓΌller, et al.,2020)
Β
Another notable difference is that oral minoxidil is quicker to absorbed into the body. Oral minoxidil is absorbed from the stomach route, however when applied topically, it needs to soak through the epidermis on the scalp to reach the hair follicles. As a result, oral users had significantly greater blood levels of minoxidil than topical users.
Β
Medications like minoxidil have been approved by the Food and Drug Administration of the United States (FDA, USA) to promote hair growth. However, the effectiveness of these drugs varies greatly among individuals, have unwanted side effects. Relatedly, many people who suffer from alopecia hair loss are concerned about the side effects associated with conventional therapies, and complementary and alternative medicine (CAM) has thus been suggested as aΒ new treatment for alopecia. In particular,Β traditional Chinese herbΒ is an important part of healthcare in East Asia, and it is commonly used to treat alopecia patients.