Hello. My son is 15 as of this month. His father hit puberty by 13, but my son is still about 5'2, shows no signs of deepening of voice or growth spirts, increased body hair, or genital growth. I only know because he asks me when it will happen. He's taken 25mg of time released adderall for about 5 years now, but it took us 2 years to get the right dosage. Can adderall delay puberty? Or am I just jumping the gun? I don't know what age to start worrying. His father isn't around, so it's just me.