In brief

After 14 days of supplementation, the more favourable findings mainly concern the group taking ashwagandha and Rhodiola rosea in the morning. The comparison cannot isolate the effect of magnesium in the evening formula.

Comparing morning and evening regimens

An evening supplement may combine several ingredients, but assessing its effect requires evidence on the complete formulation. Published online on 4 October in the Journal of the International Society of Sports Nutrition, this trial enrolled 103 healthy, physically active adults. Participants were assigned to four groups receiving a morning formula, an evening formula, both or placebo, with 14 days of supplementation.

Findings from the morning formula

The morning preparation contained ashwagandha and Rhodiola rosea; the evening preparation combined magnesium L-threonate, theanine and apigenin. Improvements reported in the abstract mainly concern the morning group on selected stress and sleep measures. Identifying which formulation produced the observed findings is essential before attributing them to an ingredient used in a different group.

Separating formulation and ingredient effects

The comparison assesses mixtures and dosing schedules. The contribution of magnesium, and of each other component, remains a question for dedicated studies. The short intervention and healthy study population also restrict the conclusions. Products intended for clinical sleep disorders will require evidence from the relevant population and conditions of use.

Why it matters

The trial compares two formulations and their dosing schedules. For product development, the findings need to be interpreted in relation to the mixtures actually tested.

Evidence limit

The intervention was brief and involved healthy, physically active adults. It establishes neither individual ingredient efficacy nor a treatment for insomnia.

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Read the original source · JISSN / PubMed · PMID 42829807