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SiS Rest & Recover is a capsule supplement with magnesium and amino acids for athletes. The base is magnesium bisglycinate, supplemented with L-glycine, L-tryptophan, Montmorency cherry extract (CherryPURE®) and L-theanine. You take 4 capsules with water, about 30 minutes before going to sleep. A pot contains 120 capsules, so it lasts for 30 evenings.
Magnesium exists in dozens of forms, such as magnesium oxide, magnesium citrate and magnesium bisglycinate. With magnesium bisglycinate, each magnesium ion is bound to two glycine molecules. Per daily dose of 4 capsules, you get 150mg of elemental magnesium, or 40% of the reference intake. That seems modest compared to pots that advertise 300mg, but SiS deliberately stays below the 250mg that is considered the safe upper limit for magnesium from supplements in Europe. Elemental here means: the pure magnesium itself, separate from the weight of the compound it is in.
This is where Rest & Recover differs from a regular magnesium pot. Per daily dose, you get 1500mg of L-glycine, 220mg of L-tryptophan, 110mg of CherryPURE® and 100mg of L-theanine. These are not symbolic extras; many individual magnesium products add at most 50mg of glycine as an auxiliary substance. Glycine is the chelate partner of the magnesium and an amino acid. L-tryptophan is an amino acid that your body does not produce itself and that occurs in high-protein foods. CherryPURE® is a standardized extract of the Montmorency cherry (Prunus cerasus). L-theanine, finally, is an amino acid from green tea. The capsule wall is plant-based, made of hydroxypropyl methylcellulose.
Magnesium contributes to the normal function of muscles and the normal function of the nervous system. It also contributes to normal psychological function, a normal energy-yielding metabolism and to the reduction of tiredness and fatigue. For the other ingredients, no permitted health claims are available, so we do not mention them.
SiS has every production batch of Rest & Recover tested via Informed Sport, the independent certification program of the LGC laboratory. There, every batch is screened for substances from the WADA banned list before the product can leave the door. For competitive athletes, that is not a detail but a condition, and it is something you rarely encounter with drugstore brands. The formula consists of a mineral, three amino acids and a cherry extract, without melatonin: nutrients that you also get partly from your daily food, but then in fixed amounts per capsule.
Rest & Recover complements the SiS range for the evening. Four capsules in your evening routine, one pot lasts a month. SiS keeps it that simple.
The magnesium is bound to glycine. With 40% of the reference intake per daily dose, you remain well below the European upper limit for supplements.
Where individual magnesium products often add a symbolic pinch of glycine, Rest & Recover provides 1500mg per four capsules. In addition, you get 220mg L-tryptophan, 110mg CherryPURE® cherry extract and 100mg L-theanine.
An independent laboratory tests every production batch for substances on the WADA prohibited list. This means you can use Rest & Recover even as a competitive athlete.
The formula consists of one mineral, three amino acids and cherry extract, no hormones. One jar lasts one month with daily use.
* Percentage van de referentie inname volgens Verordening (EU) Nr. 1169/2011.
** Reference intake unknown.
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Magnesium contributes to the normal functioning of the nervous system, to normal psychological functions and to the reduction of tiredness and fatigue. No authorized health claims are available for the other ingredients.
About 30 minutes before you go to sleep, with a glass of water. You take all 4 capsules at once, according to the recommended use.
Yes. In Europe, 250mg per day is considered the safe upper limit for magnesium from supplements, irrespective of what you consume through regular food. With 150mg per daily dose, you remain well below that. Only be mindful of accumulation if you also use other magnesium supplements or fortified sports nutrition.
Because the ingredients simply wouldn't fit otherwise. The 1500mg of L-glycine and magnesium bisglycinate alone fill most of the capsules. One capsule containing the full daily dose would be too large to swallow comfortably, so SiS divides the contents into four smaller capsules that you take at the same time.
CherryPURE® is a standardized extract of the Montmorency cherry, a sour cherry (Prunus cerasus), made by the American company Shoreline Fruit. Rest & Recover contains 110 mg of this extract per daily dose, in addition to the separately added amino acids.
The difference lies in the compound. In magnesium oxide, magnesium is bound to oxygen, in magnesium citrate to citric acid, and in bisglycinate to the amino acid glycine. The elemental magnesium content per gram therefore varies by form.
