I would take with creatine as well. I re-injured my ankle so no lower body for a while but my current lifts are very good lifetime on 20g creatine and BCAAs.
I was planning on taking it in the mornings, along with the creatine, which would right after my workout on workout days. Do you think 3 grams would be sufficient? I'm still taking 5 grams of glycine before bed, along with the melatonin. I found that it does indeed help me with my sleep. However, I cannot have coffee anymore. It has an offsetting effect. More so now than in the past. Even a single, small cup of strong coffee in the morning can ruin a night's sleep. I tried it on different occasions to the same effect. I wouldn't have believed it if someone else said so. It seems different people metabolize caffeine at different rates. (It wasn't always this way.) I can get away with 2 bags of green tea in a 1.5-liter pitcher over the course of the morning; that's about it.
Yes, first thing, or right after my morning workout on workout. In fact, I just tried the leucine, and I don't much care for the taste. I think I will mix the two together.
FYI, although my go-to science guy was fine with the creatine and glycine supplements, he is not at all a fan of a leucine supplement.