Is it safe to quit Minoxidil after using it for 1 month?

Hi! I've started Minoxidil 5% about 4 weeks ago and I've normally noticed a shedding. After the 3rd week I started to have irritation on the scalp and dry dandruff flakes every time I used the comb so I decided to stop the treatment. Will this have a bad effect on my hair, after using Minoxidil for 4 weeks and then stopping it? Will my healthy hair grow back, those ones that I've lost with the shedding, or they will be totally affected by the stoppage of the treatment? Thank you!