What does creatine actually do?
Creatine monohydrate reliably helps you produce a bit more force and do a couple more reps in short, hard efforts — which adds up to more muscle and strength over time.
Creatine is one of the most-studied legal supplements in existence, and the consensus is unusually clear: it improves performance in short, high-intensity efforts — the kind of work that drives strength and hypertrophy — with a strong safety record.
It works by topping up your muscles’ phosphocreatine stores, which help regenerate energy during brief maximal efforts. The effect per set is small — a rep or two, a little more force — but repeated across months of training, that extra work capacity compounds into meaningfully more muscle and strength.
What it isn’t
It’s not a stimulant and you won’t “feel” it working. The early scale-weight bump is mostly water drawn into the muscle, not fat or instant muscle. And it doesn’t replace training or protein — it amplifies the returns on work you’re already doing.
The practical version
Monohydrate is the form with all the evidence; the fancier, pricier forms don’t outperform it. Three to five grams a day, every day, timing unimportant. A loading phase is optional and just gets you to full stores faster.