Heroic Potion

As a raid tank I would just as soon use my potion cooldown for Ironshield potions when tanking a hard hitting boss. At a time I am using last stand, threat is not an issue (most likely late in a fight) and the 700-910 health that could be gained for a mere 15 seconds is heavily outweighted by the several thousand points of preventatively mitigated damage from the Ironshield.

As a Protection Spec Warrior I love these potions when raiding content at 70! It's absolutely PERFECT when you use the potion and hit, "Last Stand (increases health by 30% for 20 secs)," right afterwards. Just to show you a basic example of how effective it is:

Say you have a hit points of: 10,000 HP Unbuffed. A rather easily obtainable stat @ high 60's to 70.

HP: 10,000
Last Stand HP w/o Heroic Pot: 13,000

HP w/ Heroic Pot: 10,700
Last Stand HP w/ Heroic Pot: 13,910

Essentially this potion gives an increase of "910 HP," almost 1K "free" HP if you use it effectively with Last Stand (assuming your max HP is 10K), and even "a bit" more so if you have more than 10K HP. When raiding especially with all the "raid buffs" you'll have, the increase is really dramatic the moment you use the pot. ~900 hp is like "temporarily granting ~90 stamina," for the next 15 seconds.

Not to mention 70 str also gives a few "points," in block for warriors. A really nice bonus indeed. Only thing to look out for is that it shares cooldowns with health pots, so keep that in mind if you continue to get hit really hard after the effects wear off.

It will increase Strength by 70 and HP by 700 for 15 seconds. Verbage could have been better in the description by Blizzard.