You can get it in foam to apply locally OTC (basically Rogain) you apply to the scalp or the pills. I take a daily tiny dose, I will likely increase it soon. It’s basically 1/4 of a pill.

Mine is prescription from my dermatologist. It’s from a specialty pharmacy that mails it to me for a very low price. You have to take it daily. And, the theory is you must take it indefinitely, which is ok with me if it helps me keep my hair.

I’m not sure if the B12 will completely reverse and I won’t need the Minoxidil of not. Will figure it out down the road.

I did read that timing is important, so I’d try to start it asap if your doctor approves it. I’d also try to find a dermatologist or hair loss specialist to figure out exactly what is causing it. I wish you luck!