Meh, while the answer to this question is going to vary from person to person, I think that the community can agree with me in that there are a few significant differences. I am going to make this one really, really brief and hopefully as succinct as possible, This question gets asked a fuck ton you see, and probably for good reason. OP, think about the effects that you experience from weak stimulants like caffeine. I'm sure you know what it feels like to have too much coffee. It is uncomfortable, your heart palpitates, your mind races, you can't stop fidgeting etc.
If you will all accept my extreme layperson's definition of how this stuff works, please continue reading

Basically, you have a spectrum at which one end lies caffeine and at the other end lies pure Methamphetamine. The former is a peripheral nervous system stimulant (PNS) with central activity, the latter is a balls to the wall Central Nervous System Stimulant (CNS)
On this spectrum there are are many different stimulants with varying levels of PNS to CNS to whatever the hell else type of activity.
Kola Nut -> Caffeine ->Ephedrine -> Coca -> Amphetamine -> Dextroamphetamine -> Cocaine -> Methamphetamine
So, these beads are not made for smoking. You can crush them up pretty well, I'm sure, but it still won't be the same. 20mg is a small dose man. I applaud you for keeping it that way, I just, as a seasoned user of speed, might be a little underwhelmed by the effects you know? Really man, if I were you I would: Take a few tums or a DYI baking soda antacid. Wait 20 minutes. consume crushed beads either in or with the water. This will be the best way I promise you.