Quez The Lame said:You get only the +2 STR, not the standard size adjustments. You become bigger, but not that big.
The +2 Str really only adds to damage since as a large creature you get -1 to attack that offsets the +1 to attack from the strength increase. Still, reach, extra hp, increased weapon damage etc. make it a really nice spell.
Is it properly priced, though, in potion form? It's 250 gp, which I think is a remnant of Enlarge Person as a 5th caster level back in 3e. Shouldn't the 'correct' price be 50 gp like most first level spells? I suppose you could argue for an increase since it's a 1 round casting time spell.
Pinotage