A friend of mine tried peyote and got a heightened sense of smell... this happened around 30% later on the effect disappeared...

Hello, I am new to I-doser and was wondering... Can you overdose with I-doser and what are the effects??? I mean...to take a same dose right after you had one and/or repeat the process several times ? And what happens when you mix two or more doses ? Will it simply negate the effect of the previous ...