Hi ali, havenot used my silver pulser yet,but used my magnetic pulser for few days ,but had to stop it coz i started to get caffaein toxicity sypmtoms,coz i was zapping for long time 45 days with 5-7 days resting in-between. then when used magpulser it was apparent caffaein starts to affect me,so i stopped every thing waiting for caffaein to go away from my system. now im back as normal as before ,but my advise the use of these machines dont go along with caffaein. ,will be using CS soon and will tell you.what about you ,your input is greatly apreicated.