BA has more of an acute effect so it won't matter much. Cop should last for at least a few days maybe even a week so no big deal. Stock up and enjoy.
Just an FYI BA is not acute, this is a common mistake as people swear they feel it working immediately from the tingling
" In the gastrocnemius muscle (mostly Type II fibers), studies that measure muscle carnosine stores note increases of 9.7+/-10.8% (2 weeks of 3.2g, increasing to 44.5+/-12.5% after 2 more weeks at 3.2g and 4 weeks at 1.6g) and 8.1+/-11.5% (2 weeks of 1.6g, increasing to 35.5+/-13.3% after 8 weeks).[43]
In the tibialis muscle (mostly Type I) these increases are noted to be by 17.4+/-9.6% (2 weeks of 3.2g) and 11.8+/-7.4% (2 weeks of 1.6g) with lesser peak levels of 21.9+/-14.4% to 30.3+/-14.8 after 8 weeks; the differences noted are in part due to dose, and in part due to lower baseline levels of ?-alanine in Type I muscles possible causing a greater increase acutely.[43]"
It is still saturating at 8 weeks, and I wager its effects may remain longer than COP.
A lot of people use it pre, but as it works by saturation it really makes no difference and in fact uptake is improved while dosing with a meal.
I really want to make a big post on common supplement misconceptions, for the new joiners. New task for my day