A Randomised, Double-Blind, Placebo-Controlled Trial Evaluating Concentrated Phytochemical-Rich Nutritional Capsule in Addition to a Probiotic Capsule on Clinical Outcomes among Individuals with COVID-19—The UK Phyto-V Study
Robert Thomas, Madeleine Williams, Jeffrey Aldous, Yuuki Yanagisawa, Rajeev Kumar, Rachel Forsyth, Angel Chater
COVID, doi:10.3390/covid2040031
Gut microflora dysbiosis affects the majority of individuals after COVID-19, contributing to both gastro-intestinal (GI) and non-GI symptoms. Natural phytochemicals have reported anti-viral properties and favourable effects on inflammatory and oxidative pathways, both important for tissue damage post-viral pneumonia. This study involved 147 participants with symptomatic COVID-19, randomised to receive a placebo (P) or a phytochemical-rich concentrated food capsule (PC) in addition to a pre/probiotic lactobacillus capsule. Participants taking the PC had an almost two-fold reduction in mean fatigue scores compared to P [p = 0.02], a three-fold reduction in cough score and more than a double improvement in overall well-being scores [p = 0.02]. Two (1.5%) participants reported mild, increased bloating which they felt was attributable to the capsules, although GI symptoms improved in 25 of 31 participants (82%) who reported them at baseline. Sedentary, older, previously hospitalised men with GI symptoms had a statistically significantly improvement among those given the probiotic. Although some participants with early disease would have improved spontaneously, such a rapid improvement observed in the majority of participants, who had been suffering for an average of 108 days, was clinically relevant and welcomed, especially among those more likely to have pre-existing gut dysbiosis. We are now evaluating whether this blend could also enhance antibody titres post-COVID-19 vaccination.
Author Contributions: Conceptualization, R.T., R.K., J.A. and A.C.; methodology, R.T., J.A., A.C. and M.W.; software, Not applicable; validation, R.T. and J.A.; formal analysis, J.A.; investigation, R.T. and M.W.; resources, R.T. and M.W.; data, M.W. and R.T.; writing-original draft preparation, R.T.; writing-review and editing, Y.Y., R.F. and M.W.; visualization, M.W. and Y.Y.; supervision, R.T.; project administration, M.W.; funding acquisition, Not applicable. All authors have read and agreed to the published version of the manuscript.
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'abstract': '<jats:p>Gut microflora dysbiosis affects the majority of individuals after COVID-19, '
'contributing to both gastro-intestinal (GI) and non-GI symptoms. Natural phytochemicals have '
'reported anti-viral properties and favourable effects on inflammatory and oxidative pathways, '
'both important for tissue damage post-viral pneumonia. This study involved 147 participants '
'with symptomatic COVID-19, randomised to receive a placebo (P) or a phytochemical-rich '
'concentrated food capsule (PC) in addition to a pre/probiotic lactobacillus capsule. '
'Participants taking the PC had an almost two-fold reduction in mean fatigue scores compared '
'to P [p = 0.02], a three-fold reduction in cough score and more than a double improvement in '
'overall well-being scores [p = 0.02]. Two (1.5%) participants reported mild, increased '
'bloating which they felt was attributable to the capsules, although GI symptoms improved in '
'25 of 31 participants (82%) who reported them at baseline. Sedentary, older, previously '
'hospitalised men with GI symptoms had a statistically significantly improvement among those '
'given the probiotic. Although some participants with early disease would have improved '
'spontaneously, such a rapid improvement observed in the majority of participants, who had '
'been suffering for an average of 108 days, was clinically relevant and welcomed, especially '
'among those more likely to have pre-existing gut dysbiosis. We are now evaluating whether '
'this blend could also enhance antibody titres post-COVID-19 vaccination.</jats:p>',
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'Nutritional Capsule in Addition to a Probiotic Capsule on Clinical Outcomes among Individuals '
'with COVID-19—The UK Phyto-V Study',
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