Percutaneous Absorption of Minoxidil in Humans

Oral minoxidil is generally more effective than topical minoxidil, despite higher side effect risks. Topical minoxidil can achieve higher bloodstream levels in some individuals, but effectiveness depends on conversion and scalp response.

Minoxidil should be applied directly to the scalp for effectiveness, as applying it elsewhere may not work and could cause systemic effects. Alternatives like oral minoxidil are not suitable for everyone due to potential side effects like severe water retention.

The user experienced side effects from oral minoxidil, such as palpitations and insomnia, and switched to topical minoxidil, which led to noticeable hair regrowth, especially at the hairline. They also use finasteride and observed increased hair shedding initially, which later stabilized.

Different minoxidil formulations affect hair growth and side effects. Higher propylene glycol and pH levels improve effectiveness but can cause scalp irritation.

Oral minoxidil is claimed to be more effective and easier to use than topical minoxidil, with a 100% response rate, but it may cause unwanted body hair growth and has potential heart-related side effects. Topical minoxidil is less effective for many due to enzyme limitations, can cause scalp issues, and is more challenging to apply, but it avoids systemic side effects.

The user experienced side effects from oral minoxidil and is considering switching to topical minoxidil and a roller. They are taking a reduced dosage of 0.625 mg daily and have seen hair growth within a month.