unless im mistaken, gear typically refers to heroin. and yes, consecutive dosing will build tolerance, although this is relative in many ways. first, body chemistry plays a huge factor, and is different for everyone. second, the amount done on both occasions will impact any tolerance build. the more you do, the more tolerance you will get and the faster you will get it. third, you may not notice for just 2 days if u havent taken anything in a while, but with subsequent doses it will become much more apparent. personally, i would recommend waiting at least a week between each dose, if you intend to do it somewhat regularly. i would say 2 days in a row is fine as long as u dont intend to do it for a while afterwards, but personally i dont like the crash from uppers, at any dose. i get terrible headaches and become really bitchy... also the amphetamines cause an extreme drop in my testosterone levels, so i stay away from them most of the time. even tiny doses of adderall will kill my circulation and testosterone for quite a while after dosing. also, i would not recommend IVing anything, under any circumstances. find the substance bioavailability for different ROA and use the next best one. IVing is usually much more harmful and addictive, and can even be less powerful in the case of many prescription painkillers (oxycodone). good luck.
