I've heard so many contrasting dosages it's hard to even begin and suggest a starting dose. I'm in a similar predicament as many other posters on here as I will only have 500mg. Now if I start too low and build up every other day I may not have had any significant effects before I've run out, on the other hand if I jump straight in with a high (?) dose and end up, well...dead or worse.
Obviously the previous of the two aforementioned scenarios is preferable but thanks to the current situation in the UK where folk have no idea what they are actually getting you really have to start low with everything regardless of what its been labelled as.
The earlier posters in this or other incarnations of 5-IAI threads have mentioned mega stimulation lasting days from higher doses, I've also heard of folk accidentally putting themselves into potentially bad situations down to 'eyeballing' what they believed to be a very small dose. I've been told of the sample I'm going to get that 200mg doesn't really touch the sides?!? It's a crazy, dangerous situation. Please note I'm not advocating dosing at any of the above levels just sharing what I have been told or read.
I personally am going to start at very low doses like above posters have recommended, and if I run out before any decent effects then at least I'm still alive or not tearing my hair out because I've been awake for five days straight.