The functional wellness space is growing fast and so are consumer expectations. People no longer just want products that taste good; they want to know they work. At MAG Beverages, we are committed to full transparency, and that starts with the science behind every ingredient we use. In this first installment of our Wellness Intelligence series, we examine four widely researched botanical and nutritional ingredients used in our SPIRITED Kava bottle and shot: kava, ashwagandha, L-theanine, and Vitamin C.

Ingredient No. 1

Kava (Piper methysticum)

The Pacific Island Anxiety Remedy

Kava is a root native to the South Pacific, where it has been consumed ceremonially for thousands of years. In modern wellness circles, it is gaining renewed attention as a natural anxiolytic an agent that helps reduce anxiety without the sedation or dependency concerns associated with pharmaceutical alternatives. Its active compounds, kavalactones, are believed to work by modulating GABA-A receptor activity and noradrenaline reuptake mechanisms that closely mirror those of conventional anxiolytics.

In a pivotal 2013 double-blind, randomized, placebo-controlled trial published in the Journal of Clinical Psychopharmacology, researchers enrolled 75 adults with a formal diagnosis of Generalized Anxiety Disorder (GAD). Participants received an aqueous extract of kava delivering 120–240 mg of kavalactones daily for six weeks. Anxiety was assessed using the Hamilton Anxiety Rating Scale (HAMA), and remission rates were tracked throughout. The results were striking.

Clinical Evidence Sarris et al., 2013
Study Design
Randomized, double-blind, placebo-controlled trial. 75 adults with a formal diagnosis of Generalized Anxiety Disorder. 6-week intervention, 120–240 mg kavalactones daily as an aqueous extract. Published in the Journal of Clinical Psychopharmacology (PMID: 23635869).
Remission Rate
26% of kava recipients achieved anxiety remission (HAMA ≤ 7), compared to just 6% in the placebo group a greater than four-fold difference (p = 0.04).
Effect Size
Overall HAMA anxiety scores were significantly reduced in the kava group (p = 0.046, Cohen's d = 0.62), rising to d = 0.82 among those with moderate-to-severe GAD both considered clinically meaningful thresholds in anxiety research.
The bottom line: A four-fold higher remission rate than placebo places standardized aqueous kava extract among the more compelling natural options for stress and situational anxiety. The effect sizes reported are considered clinically meaningful in anxiety research.
Ingredient No. 2

Ashwagandha (Withania somnifera)

Ayurveda's Stress Shield

Ashwagandha is a cornerstone of Ayurvedic medicine, used for over 3,000 years across India and North Africa as an adaptogen a substance that helps the body adapt to physical and psychological stress. Unlike stimulants or sedatives, adaptogens work by regulating the body's stress-response system at a physiological level, specifically targeting the hypothalamic-pituitary-adrenal (HPA) axis. The clinical evidence supports this mechanism powerfully.

A landmark 2012 double-blind, randomized, placebo-controlled study published in the Indian Journal of Psychological Medicine enrolled 64 chronically stressed adults. Participants received either 300 mg of a high-concentration, full-spectrum ashwagandha root extract (KSM-66®) twice daily or a placebo for 60 days. Crucially, researchers measured not only subjective stress scores but also serum cortisol the body's primary biochemical stress marker giving this study objective, measurable outcomes.

Clinical Evidence Chandrasekhar et al., 2012
Study Design
Randomized, double-blind, placebo-controlled trial. 64 chronically stressed adults. 60-day intervention at 300 mg KSM-66® ashwagandha root extract twice daily. Primary outcomes included both subjective stress scores and objective serum cortisol. Published in the Indian Journal of Psychological Medicine (PMID: 23439798).
Cortisol Reduction
Serum cortisol dropped by 27.9% in the ashwagandha group versus just 7.9% in the placebo group (p = 0.0006) more than three and a half times the reduction compared to placebo.
Stress & Mood Scores
Standardized depression subscale scores improved by 77% in the ashwagandha group, compared to essentially no change in the placebo group a clinically dramatic difference across both psychological and physiological markers.
The bottom line: A 27.9% reduction in serum cortisol is not a subtle shift it represents a measurable recalibration of the body's stress-response system. For anyone managing chronic stress, ashwagandha's documented effect on the HPA axis is among the most compelling findings in the adaptogen literature.
Ingredient No. 3

L-Theanine

The Calm in Your Cup of Tea

L-theanine is a naturally occurring amino acid found almost exclusively in the leaves of Camellia sinensis the plant behind green tea. It is largely responsible for the focused, calm state that tea drinkers have appreciated for centuries. Unlike many calming agents, L-theanine achieves its effects without sedation, by modulating gamma-aminobutyric acid (GABA), dopamine, and serotonin activity in the brain dialing down the nervous system's anxiety response while keeping the mind sharp and alert.

A 2019 randomized, placebo-controlled, crossover, double-blind trial published in the peer-reviewed journal Nutrients assessed the effects of 200 mg of L-theanine per day in 30 healthy adults over four weeks. Researchers measured both stress-related psychological symptoms and cognitive performance using validated clinical instruments: the State-Trait Anxiety Inventory (STAI), the Self-rating Depression Scale (SDS), the Pittsburgh Sleep Quality Index (PSQI), and the Brief Assessment of Cognition in Schizophrenia (BACS) battery.

Clinical Evidence Hidese et al., 2019
Study Design
Randomized, placebo-controlled, crossover, double-blind trial. 30 healthy adults. 4-week intervention at 200 mg/day. Multiple validated psychological and cognitive instruments. Published in Nutrients (PMID: 31623400; PMCID: PMC6836118).
Anxiety & Sleep Quality
STAI trait-anxiety scores fell significantly in the L-theanine group (p = 0.006) and sleep quality improved (p = 0.013) with no significant changes observed in the placebo group.
Cognitive Performance
Verbal fluency and executive function both improved significantly in the L-theanine group compared to placebo (p = 0.001 and p = 0.031, respectively) demonstrating a dual profile of calm and cognitive sharpening.
The bottom line: L-theanine's dual profile simultaneously reducing anxiety and sharpening cognitive function without inducing sedation is unusual among wellness ingredients. Meaningful improvements in both emotional wellbeing and executive function from a single, well-tolerated compound at 200 mg/day make it a stand-out addition to any daytime wellness formulation.
Ingredient No. 4

Vitamin C (Ascorbic Acid)

Beyond the Common Cold

Vitamin C is the most widely consumed dietary supplement in the world, and most people associate it almost exclusively with immune defense. Emerging clinical evidence, however, is building a compelling case for a secondary role: supporting mental performance, attentional focus, and cognitive resilience. This is especially relevant for the large proportion of the population that does not achieve optimal Vitamin C status through diet alone a group for whom targeted supplementation may offer measurable cognitive dividends.

A 2022 double-blind, randomized, placebo-controlled trial published in the European Journal of Nutrition enrolled 46 healthy young adults whose serum Vitamin C levels were below the adequate threshold (< 50 μmol/L). Participants received 500 mg of Vitamin C twice daily (1,000 mg/day total) or a placebo for four weeks. Researchers assessed multiple dimensions of mental performance, including attention, work engagement, mood, and cognitive processing speed using both questionnaires and objective cognitive testing.

Clinical Evidence Sim et al., 2022
Study Design
Randomized, double-blind, placebo-controlled trial. 46 healthy young adults with suboptimal serum Vitamin C (< 50 μmol/L). 4-week intervention at 1,000 mg/day (500 mg twice daily). Published in the European Journal of Nutrition (PMID: 34476568; PMCID: PMC8783887).
Attention & Focus
Vitamin C supplementation significantly improved attention scores (p = 0.03) and work absorption (p = 0.03) compared to placebo in just four weeks of supplementation.
Cognitive Speed
Subjects in the Vitamin C group outperformed the placebo group on the Stroop color-word test, a validated measure of attentional control and processing speed (p = 0.04).
The bottom line: Vitamin C's role in mental performance is increasingly difficult to ignore. At optimal levels, it measurably sharpens attentional focus and cognitive output making it a powerful addition to any evidence-based functional beverage designed for daily performance.