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Clinical Efficacy of Megadose Vitamin C in Severe and Critical Ill COVID-19 Patients (CEMVISCC): A Multicenter, Randomized, Single-blind, Placebo-controlled Clinical Trial

Liu et al., NCT05694975, CEMVISCC, NCT05694975

Jun 2023

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Vitamin C for COVID-19

6th treatment shown to reduce risk in September 2020, now with p = 0.00000002 from 73 studies, recognized in 12 countries.

Lower risk for mortality, ICU admission, hospitalization, and recovery.

No treatment is 100% effective. Protocols combine treatments.

5,100+ studies for 109 treatments. c19early.org

Estimated 608 patient vitamin C late treatment RCT with results not reported over 1 year after estimated completion.

6 vitamin C RCTs have results missing long after expected1-6
The trials report a total of 1,420 patients, with 3 trials having actual enrollment of 602, and the remainder estimated.

Important missing comments or errors? Let us know.

1. Liu et al., Clinical Efficacy of Megadose Vitamin C in Severe and Critical Ill COVID-19 Patients (CEMVISCC): A Multicenter, Randomized, Single-blind, Placebo-controlled Clinical Trial, NCT05694975, clinicaltrials.gov/study/NCT05694975.clinicaltrials.gov.

2. Boukef et al., Melatonin, Vitamins and Minerals Supplements for the Treatment of Covid-19 and Covid-like Illness: Results of a Prospective, Randomised, Double-blinded Multicentre Study, NCT05670444, clinicaltrials.gov/study/NCT05670444.clinicaltrials.gov.

3. Lamontagne et al., Lessening Organ Dysfunction With VITamin C - COVID, NCT04401150, clinicaltrials.gov/study/NCT04401150.clinicaltrials.gov.

4. Galindo et al., High-dose Intravenous Vitamin C (HDIVC) as Adjuvant Therapy in Critical Patients With Positive COVID-19. A Pilot Randomized Controlled Dose-comparison Trial., NCT05029037, clinicaltrials.gov/study/NCT05029037.clinicaltrials.gov.

5. Sharmin et al., Randomized, Double -Blind, Placebo Controlled, Trial to Evaluate the Effect of Zinc and Ascorbic Acid Supplementation in COVID-19 Positive Hospitalized Patients in BSMMU, NCT04558424, clinicaltrials.gov/study/NCT04558424.clinicaltrials.gov.

6. He et al., Efficacy and Safety of High-dose Vitamin C Combined With Traditional Chinese Medicine in the Treatment of Moderate and Severe Coronavirus Pneumonia (COVID-19), NCT04664010, clinicaltrials.gov/study/NCT04664010.clinicaltrials.gov.

Liu et al., 1 Jun 2023, Single Blind Randomized Controlled Trial, China, trial NCT05694975 (history) (CEMVISCC). Contact: zhguoliu@163.com, yushuang7991@163.com, 13322946821@189.cn, 1561015010@qq.com, likenwei@163.com, 32425082@qq.com.

This Paper Vitamin C All

Late treatment
is less effective

Please send us corrections, updates, or comments. c19early involves the extraction of 100,000+ datapoints from thousands of papers. Community updates help ensure high accuracy. Treatments and other interventions are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. FLCCC and WCH provide treatment protocols.

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