Free Tools
Supplement Timing Planner
Tell us what you take and when you train, and we'll build your daily schedule — waking, pre-workout, post-workout, dinner and before bed — with the reason each supplement sits where it does.
The honest bit most sites skip: for the majority of supplements, timing barely moves the needle. Creatine and beta-alanine saturate over weeks, so the clock is irrelevant. This planner shows you the few things that genuinely are timing-sensitive — and the ones you can take whenever fits your day.
Your daily schedule
On waking / breakfast
Morning, with food
Vitamin D
Timing helpsFat-soluble, so take it with the day’s largest fatty meal for absorption. Morning avoids any chance of it nudging your sleep.
Pre-workout
Evening session, 30–60 min before you train
Pre-workout
Timing mattersTake it 30 to 45 minutes before you lift so the caffeine and pump ingredients peak as your first working set starts.
Post-workout
Within an hour after
Creatine
Timing is a mythTiming is basically a myth — 3 to 5g every single day is what saturates your muscles. Take it whenever you will actually remember; anchoring it to your post-workout shake is just a convenient habit.
Whey protein
Timing helpsHandy right after training, but the anabolic window is hours wide. Hitting your total daily protein matters far more than the shake landing post-workout.
Watch your sleep
You train in the evening and take a stimulant. Caffeine has a half-life of roughly 5 to 6 hours, so a pre-workout at 6pm still leaves about half of it in your system near midnight. If your sleep suffers, cap caffeine at least 8 hours before bed or switch to a stim-free pre-workout on late days.
Of your 4 picks, 1 is genuinely timing-sensitive and 1 you can take whenever fits your day. Most timing advice online is overblown — consistency and total daily intake beat the clock for almost everything except your pre-workout.
Supplement tool
Creatine Dosage Calculator
The take-it-anytime supplement — your exact daily dose for your bodyweight and days to saturation.
Supplement tool
Caffeine Calculator
The one that truly is timing-critical — your pre-workout dose plus a half-life sleep cut-off.
Timing that genuinely matters
Only a short list of supplements are truly clock-sensitive, and they are the acute pre-workout ingredients. Caffeine peaks in your blood about 45 to 60 minutes after you take it, and citrulline's blood-flow effect is short-lived, so both belong 30 to 60 minutes before you train. Get these right and the session feels different; get them wrong and you have wasted the dose. Everything else is far more forgiving.
Timing that is mostly a myth
Creatine and beta-alanine work by slowly saturating your muscles over days and weeks, so the exact time of day you take them changes nothing — consistency is the entire game. Protein is the same story at the daily level: the "anabolic window" turned out to be hours wide, so a post-workout shake is a convenience, not a requirement. Do not let clock-watching distract you from the things that actually drive results: total daily dose and taking it every day.
Take fat-soluble things with food
Vitamin D, a multivitamin's A, D, E and K, and omega-3 all absorb far better alongside a meal that contains some fat than on an empty stomach — that is why the planner slots them next to your biggest meals rather than at a fixed hour. Magnesium and ZMA lean toward the evening because magnesium supports relaxation and sleep, and ZMA absorbs best away from calcium and dairy.
Common questions
When should I take creatine?+
Any time of day works. Creatine builds up in your muscles over days of consistent use, so 3 to 5g every single day is what matters, not the exact time you take it. The convenient move is to attach it to a daily habit — your morning coffee or your post-workout shake — so you never forget it. Timing has only a marginal, arguably nonexistent effect.
When should I take whey protein?+
Whenever helps you hit your daily protein target. The old "anabolic window" of 30 minutes after training has been shown to be hours wide, so a post-workout shake is convenient rather than essential. If you struggle to reach 1.6 to 2.2g of protein per kg of bodyweight from food, use whey to fill the biggest gaps in your day.
When should I take my pre-workout?+
About 30 to 45 minutes before you train. Caffeine peaks in your blood roughly 45 to 60 minutes after you take it, and ingredients like citrulline are also acute, so timing genuinely matters here — this is the one category where getting the clock right changes the session. If you train late in the evening, mind the sleep cut-off or go stim-free.
Should I take magnesium or ZMA before bed?+
Before bed suits it. Magnesium supports relaxation and sleep quality, so an evening dose is sensible, and ZMA is traditionally taken at night on an empty stomach. Keep it away from calcium or dairy, which can blunt zinc and magnesium absorption. The effect on sleep is modest, but the timing does no harm and may help.
Does supplement timing actually matter?+
For most supplements, far less than the internet claims. Creatine and beta-alanine work by saturating your body over weeks, so time of day is irrelevant. Protein, vitamins and omega-3 mainly need to be consistent and, for fat-soluble ones, taken with food. The genuine exceptions are acute pre-workout ingredients — caffeine and citrulline — where dosing shortly before training changes the result. This tool is informational only, not medical advice.
Now get the products right
Timing only helps once the supplement itself is properly dosed. Every product we track is scored 0–100 on how closely it matches the evidence — or let the wizard build your whole stack in a minute.
Informational only — not medical advice. Timing guidance is general and evidence-based for healthy adults; if you have a health condition, are pregnant or take medication, speak to a clinician first. Buy links are affiliate links; we may earn a commission at no extra cost to you.