^
Please don't advise someone to rail 250mg of a new drug.
Meph is a great drug, and if you read the various megathreads on this site, you'll probably learn the the following:
(1) Very fiendish when snorted; less so when injested.
(2) As with any new drug, dose low to start, then increase if necessary
(3) This is quite a strong vaso-constrictor and a lot of people have experienced nasty side effects because of this. Some don't; others have ended up with purple limbs, in hospital.
In light of the above, I would recommend a single, swallowed dose of about 100mg for your first experience. You'll feel some good effects for a good couple of hours.
Wait until the next day to see if you experience any of the side effects that some report
If not, increase your dose to get the full effects of the drug. The sweet spot for me is to bomb 200mg, and take a 50mg bump on the way up, and another 50mg bump at the 90mins mark.
No more, no less.
It's a great drug, but has caused a lot of people a lot of problems through not understanding it.
Tips for injesting
Make sure you have an empty stomach, as far as possible. If you must eat within about 3 hours before dropping, then make sure you don't have any heavy carbs like rice or pasta. Drink plenty of water immediately after dropping until you feel like you're coming up.
Tips for snorting
This stuff stings like hell, but you can reduce this by crushing meph up as finely as you can. Helps with absorbtion too. Because this is such a strong constrictor, your nose will only be able to fully absorb a couple of lines before the blood-flow reduces significantly in that area. Don't go railing fatter and fatter lines, thinking that nothing is happening. People confuse this with 'tolerance' when in fact, they've just a got a head full of unabsorbed meph waiting to seriously fuck you up the next day.