Look, either stick to vet winny .. or get fake zambons. That simple. If you think I am talking trash go ahead and buy your winny wherever you want but everyone who knows his shit can tell you this - inj winy needs to be micronized to 30 micron level , then chimcaly proccessed to prevent static clumping (polarity +/- particles ) , then requires very strict sterile room procedure to treat any water based solution as germs are terribly effective at growing in water .. so why take chances with fakes or UG ? ignorants think they can make inj winy by using powder and water in thier basment, some guys use toxic PEG and PS kits - would not touch it for a zilion $$$.
What this means - either get vet winny - for sure it will work wonders ( qv or syd group - in this case use 22 gauge needle ) maybe get denkall, but stay off zambon fakes or any other not mentioned UG - if it's fake it's fake all the way ( you will not get ANY results and winny is just to expencive to risk this ).