It can also run out mid-combat, assuming you don't count to 700 every time you dose yourself, or set up timers to warn you. Stewing is another option, but it requires preperation, and runs out eventually like Achemy unless you're carrying around a bunch of pre-made stews. (Can't be sustained reliably against multiple opponents, when the hit&run tactics would be more advisable.) A nice thing about enchanted Stamina Recovery is it keeps working even while expending Stamina, unlike Magicka Regeneration, so the constant effect really stacks up.

Of course, that's often a lead up to Hack&Bash to take advantage of the stagger, only in a duel. During which, you can recover a lot of stamina with a little regeneration. OTOH, my main tactic is Critical Charge, which is stamina intensive, but requires a while to line up. However, I completely abandoned this for the Drainheart Sword, which recovers it on strike in a dual wield (with a more effective primary weapon.) That's also why I stacked so many instances of it (up to 4 in one build) so where 1.4% isn't significant, 5.6 is for the purposes of sustaining such a tactic. By the time you've finished 1 iteration, you've recovered enough for another bash before your opponent recovers from the stun. Same with Bashing, which is effective if you block, bash, slash, and block again. For a standing power attack, you just need 1, and so a trickle of regen will be enough to do them occasionally, if not spam them constantly. Well, it depends on what you use your stamina for, how, and how often.

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