Have you mixed it with a liquid to be able to dose it precisely? If so, what did you mix it with?
I just received my first 4F-MPH this week and I have been taken doses of ~10 mg orally and it increases my capacity to focus extremely well without any side effects what so ever. Therefore, I am considering making it easier to take and know how much instead of just having it in powder form.
It is the first stim I have found without side effects. All the popular RC stims before this have severe side effects even in small doses.
Yikes, apologies for the belated response---
Yes, definitely; my scale is only accurate to +/- ~4mg, so, whenever possible, I've switched to volumetric dosing for all my RCs. Ideally, I would use vodka (or your favorite clear spirit), so as to promote long-term storage... I'm cheap, however, and generally just dissolve the 4F-MPH (et al) in hot tap water. As long as the RC is water soluble it'll last in the fridge for *around* a week and a half to two weeks, unless using sterilized water (iirc). It's been a while, and I can't recall how high I managed to push the solubility, but I settled on a 2mg/ml ratio for ease of dosing (stored in a pretty little 50ml absinthe bottle, the kind one grabs at the liquor store checkout), and would either squirt it under my tongue with an oral syringe or dilute it in a water bottle to take with me to work.
Totally agree about it having few side effects... they're definitely there if you push up to 15+mg dosages, but are still minor and ime can be nullified with a couple beers/some good indica. Plus, I never find anything over 15mg enjoyable anyways, iunno :v
Most acceptable substitute for 5mg IR dextroamphetamine (ie, a good *mild* functional dose) I've found so far.