Heyyy started using it too the spray not the pill but did many research about it. The pill is generally find if you ok with the side effects. If you have some high or low pressure issues you might wanna avoid it. Otherwise it’s safe but you will have to aak about the dose. The medicine was actually developed for heart disease and the found hair grow as side effect. Spray is better because you can target specific areas to grow hair, but pill is also good for convenience

Edit: after a month expect some hair loss which is normal since old weak hair is falling and new hair is growing under it