There was no study that had high risk of bias in all domains (Table 2)
Both supplements offer distinct advantages to possibly help these ares, and be sure to read to the end to learn about which one boosts muscle performance most
L-carnitine L-tartrate 42%, CLA powder [glycerides (rich in CLA), corn syrup solids, sodium caseinate (contains milk), anti-caking agent (silicon dioxide), stabiliser (potassium phosphates)] 16%, Garcinia cambogia fruit extract 16%, capsule shell [gelatine, glazing agent (shellac), colour (iron oxides and hydroxides), acidity regulator (ammonium hydroxide), acidity regulator (potassium hydroxide)], anti-caking agents (magnesium salts of fatty acids, silicon dioxide), ferrous fumarate, acetyl-L-carnitine 1.2%, cayenne pepper (Capsicum annum) fruit extract, black pepper (Piper nigrum) fruit powder, zinc oxide, D-pantothenate, calcium, nicotinic acid, pyridoxine hydrochloride, cyanocobalamin, pteroylmonoglutamic acid, chromium (III) chloride, potassium iodide
10.1111/jcmm.15747 J Cell Mol Med
Diet is an easy place to start, along with assessing whether you may suffer from low stomach acid or one of the aforementioned (and very common) nutrient deficiencies