Keep the pregnyl in the fridge at all times, just like it reads on the box. When I pick mine up from the pharmacy, they put in one of those disposable ice packs to keep it cool until you get home and can put it in the fridge. And like HDV said, toss the solvent included and use bac water instead. With back water, it will be good for AT LEAST 30 days in the fridge....maybe a little bit more. Inject straight from the fridge...don't wait for it to drop to room temp. Use a slin pin and pin sub-q. I use 1000iu EW, others do well on 500iu a week. Start with 500iu...if you start to notice atrophy, bump the dose up. Use it during your cycle, NOT for post cycle therapy (pct). IMHO!! Good luck bro.
/V