Supplements for body recomposition: what actually works

Body recomposition is driven by a modest calorie deficit of 5 to 15 percent below maintenance, protein at 1.6 to 2.2 g per kg of bodyweight per day, and 3 to 4 progressive resistance sessions per week. No supplement substitutes for any of these. The body recomposition guide explains how those levers fit together, with supplements as the smallest one.

By definition a supplement fills gaps in a diet, it does not replace one. Time and effort spent on training and food quality moves your physique far more than any legal supplement. The first visible change typically appears around 8 to 12 weeks and a clear before and after around 6 months. Supplements do not shorten that timeline, they slightly sharpen training output and recovery.

A useful mental model is three tiers ranked by safety, efficacy, and cost: a tiny group with mountains of evidence, a second group that only helps if your diet is short, and a long tail of weak or mixed evidence. Recomposition works best for beginners, people returning after a break, and higher-body-fat individuals. None of those groups need supplements to start; they need the deficit, the protein floor, and the training stimulus first.

During a recomposition deficit of 5 to 15 percent below maintenance, the goal is to hold or build muscle while losing fat. Creatine supports the heavy training that signals the body to retain that muscle. It lets you push slightly more reps and load on the compound lifts, which raises the training stimulus that protects lean mass during the deficit.

Some scale weight after starting creatine is intramuscular water, not fat. In a recomposition where the scale should stay roughly flat, smoothing bodyweight into a weekly trend prevents misreading that one-time bump as fat gain. Creatine pairs with, never replaces, the protein floor of 1.6 to 2.2 g/kg and 3 to 4 sessions per week. It is the highest-value add-on once those are in place.

A flat 5 g per day of creatine monohydrate is enough. You do not need creatine HCl, buffered forms, or pre-workout blends that hide an underdose. Set the maintenance calories and the small deficit creatine supports but cannot replace in the recomposition calculator.

These are an insurance policy, not a performance lever. They earn a place only if your diet is genuinely deficient. A varied diet with plenty of produce and fatty fish twice a week often makes them unnecessary. They do not directly add muscle or strip fat; they protect general health and recovery, which indirectly supports the training and sleep recomposition depends on.

Dieting at a calorie deficit makes it harder to hit micronutrient targets. Studies of competitive bodybuilders found many fell well short of the targets for vitamin D, calcium, and zinc, which is exactly the situation a multivitamin or vitamin D supplement covers. Omega-3 (EPA + DHA) is low in the typical Western diet: aim for at least 0.3-0.5 g combined per day from food, with around 2 g combined per day a reasonable supplement target if you rarely eat fatty fish.

Quality varies widely. Cheap vitamin forms can be poorly absorbed and low-grade fish oil can carry mercury, so choose reputable products or rely on whole foods.

Most products marketed as fat burners have weak, mixed, or small effects and do not move body composition in any meaningful way. They are the bottom tier on safety, efficacy, and cost grounds. No fat burner overrides the energy balance that actually drives fat loss. Without the 5 to 15 percent deficit and the protein floor, a thermogenic does effectively nothing.

Green tea extract shows a small thermogenic effect: roughly 125-250 mg of EGCG paired with about 50 mg of caffeine modestly raised energy expenditure and abdominal fat loss in studies, but effects are small and data in lean, trained people is thin. Yohimbine can nudge fat loss when taken fasted before cardio, but evidence is limited and side effects like raised heart rate, blood pressure, and anxiety make it hard to recommend broadly. It is an advanced, optional tactic at most.

Caffeine is the only fat burner ingredient with strong support, and it works as a training and cardio aid at 1-6 mg/kg, not as a standalone fat-loss pill. Spend the money on protein and produce first. A thermogenic is a marginal, sometimes-real, often-overhyped lever that comes after every larger one is dialed in.