Tribulous is the main ingredient in all boosters, everything else is just filler bullshit that you pay extra for cuz the name brand is "reputable" in the natty industry.
You can throw it in any time... I did the first time I ever did a PCT, trib and creatine, don't know if it did shit but why the hell not... It's cheap and can't hurt. Even if the placebo of taking it helps it's allllll good haha.
Also obviously but always good to remember to eat a lot of good healthy fats to help the recovery process even if it's minimal help, anything to get the boys downtown back in order right!