Yeah, I haven't been able to find any evidence to support/reject this theory and have just decided to only combine 1 serving for convienance purposes. I've also thought about increasing the amount from the recommended 15g per day in 5g intervals, up to about 30g, until this supply runs out. I figure that way I can get a feel for my tolerance for it.

I'm still deciding to on if it's worth it to buy it seporately next time also.