Why am I fine on speed and ill on pro plus?

here it is again:

why am I fine on speed, but feel ill on pro plus?

Speed? The drug?

The purity of this drug is usually only about 5%, with the rest mixed with other white powders, ranging from talcum powder and toilet cleaner. As a result, it is said to be one of the most impure drugs available.

So everytime you get 'speed' it could be something different, from rat poison to detergent to household cleaners.

As for pro plus, it's caffeine. Your body could be ingesting mostly talcum powder from the speed, which is harmless, but caffeine will pump up your heart and make you have an adverse reaction.

Either way, don't take them

oh that explains it.
thankyou.

although how come I used to take loads of pro plus and I was fine, but now it makes me ill?