Hello~I have been trying to look for any answers to as how long you will be having these side effects, sadly, there doesn't seem to be any answers. I would try contacting your pharmacist, he/she may have some ideas as to how long they usually last. 4.5 months seems a very long time.
I hope you get some answers soon and feel better.
Hello and welcome to MedHelp and our forums. Thanks for the question. The side effects you list are all those that can be seen with minoxidil use. https://www.webmd.com/drugs/2/drug-3503/minoxidil-topical/details. I would report what you are experiencing to your doctor so you can receive guidance about continuing the medication or not. Let us know what you decide as follow up.