After reading the studies that 0.2/0.5/1.0 yield similar results, I started on 0.5mg Saturday night for the first time. At the beginning of my journey at age 32, I did have minor sides (libido, brain fog) that eventually went away. I've had great results maintaining, and adding Minoxidil 2/day was a miracle of regrowth. Starting last night, I started getting slight pins and needles all over my body, and I couldn't sleep because I wasn't tired at all. Could that be my body adjusting to the hormonal change?