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C-vitamin mod forkølelse – jo, det virker

 

En ny Cochrane-oversigt viser at fysisk stressede mennesker nedsætter deres risiko for forkølelse med 52% ved at tage 200 mg eller mere C-vitamin dagligt. Undersøgelsen viste samtidig, at en dosis på 1-2 g om dagen nedsatte forkølelsens varighed med 18% hos børn.

C-vitaminets rolle i forebyggelse og behandling af forkølelse er kontroversiel og har været det i mindst 60 år. De videnskabelige undersøgelser der er udført med C-vitamin mod forkølelse har givet modstridende resultater. Mange mennesker fortsætter dog ufortrødent med at anvende C-vitamin som til forebyggelse og som kur mod forkølelse.

C-vitamin til idrætsfolk
Det var en undergruppe der involverede 6 videnskabelige undersøgelser med i alt 643 Marathon-løbere, skiløbere og soldater på øvelse, der viste en tydelig nedsættelse af forkølelsesrisikoen på mere end 50%. Dette resultat tyder i høj grad på, at den store og voksende gruppe af løbere og andre der dyrker fritidsidræt på højt niveau, vil have gavn af en tilsvarende eller måske større dosis C-vitamin dagligt.

I 30 undersøgelser, der involverede ialt 9,676 episoder med luftvejsinfektioner blev der observeret en konsekvent, positiv virkning i form af nedsat varighed af forkølelsen på 8% hos voksne og 13,5% hos børn. Andre undersøgelser som anvendte fraværsdage fra arbejde eller skole som målestok, viste gavn af C-vitamin. Endelig har et mindre antal undersøgelser ikke formået at vise nogen forskel på C-vitamin og placebo på forkølelse. Frivillige der blev smittet af kunstig vej viste ingen eller kun mindre gavn af C- vitamin-tilskud, hvorimod naturligt smittede rapporterede om mindre alvorlige symptomer efter C-vitamin.

Dosis-respons
Cochranes gennemgang af de mange undersøgelse om C-vitamin giver det indtryk, der i de fleste tilfælde er brugt for lidt til at vise en klar effekt. For eksempel: En undersøgelse af af Dr. Thomas Karlowski og kolleger fra 1975 viste dobbelt så god virkning af 6 g/dag C-vitamin sammenlignet med 3 g/dag. En undersøgelse af T.W Anderson fra 1974 rapporterede, at 8 g/dag på forkølelsens første dag syntes bedre end 4 g/dag.
Alt i alt peger det på, at dosis skal op, men også, at der kræves flere undersøgelser.

Om forkølelse
Almindelig forkølelse er ofte årsag til lægebesøg i højindkomstlande og til fravær fra arbejde og skole. Der findes over 200 virus, der kan give forkølelses-symptomer som løbende næse, næse, nysen, ondt i halsen, hoste og undertiden hovedpine, feber og røde øjne. Symptomerne varierer fra person til person og fra forkølelse til forkølelse. Da forkølelse skyldes en virusinfektion, er antibiotika ikke anvendeligt. Derfor den store interesse for andre behandlingsformer.


Ref.
Hemila H, et al. Vitamin C for preventing and treating the common cold. Cochrane Database Syst Review 2013.

Kommentar
Det var den dobbelte Nobelprismodtager Linus Pauling der lagde kimen til den vedvarende interesse for C-vitamin mod forkølelse med sin bog: ”Vitamin C and the Common Cold” fra 1970 (dansk udgave 1972). Hans holdning var, at hvis C-vitamin ikke virker, så er det fordi man har taget for lidt. Nærværende forskning kunne tyde på, at Pauling havde ret.
 
 
 
 
 
 

FORKØLELSESSYGDOMME OG MILD INFLUENZA

Optræder ofte som husstandssygdom, hjembragt fra børnehaven. Forløber oftest uden feber, kun med øget slimdannelse i de øvre luftveje. Skal stoppes i starten (ved det første nys), med en svedekur (sauna eller til sengs med 2 dyner), Jettes basebouillon (varm fra termoflaske) og følgende blanding:

Tilskud

  • Vitamin C, 1 g hver time i minimum 8 timer, derpå minimum x 4 dgl. indtil minimum 1 uge uden symptomer. Derpå 1 g x 2 dgl.
  • Hvidløg 300 mg x 4 dgl.
  • Zink 15-30 mg dgl.
  • Magnesium 200-400 mg dgl.
En stor kontrolleret undersøgelse i USA (715 studenter) viser, at 1 g vitamin C hver time i minimum 6 timer både forebygger og lindrer alle symptomer på forkølelse og influenza effektivt. Alle symptomer blev reduceret med 85 %. Forskerne konkluderer, at store doser C-vitamin flere gange dagligt, viste sig at have en forebyggende effekt på forkølelse og influenza. Hos de som allerede havde udviklet symptomer kunne man ligeledes konstatere en betydelig effekt. 
 
Gorton HC, Jarvis K., J Manipulative Physiol Ther., 1999 Oct; 22(8): 530-3. The effectiveness of vitamin C in preventing and relieving the symptoms of virus-induced respiratory infections. J Manipulative Physiol Ther., 1999 Oct; 22(8): 530-3.
 
 
 

Covid-19 (Coronavirus)

 
https://www.mayday-info.dk/bange-for-coronavirus-studier-afsloerer-en-enkel-beskyttelse/
 
Vitamin C i større doser er åbenbart Effektivt også mod virusinfektioner. Det er vigtigt at huske halveringstiden for C-vitamin i blodet er 30 minutter.
 

Fra: Orthomolecular News <omns@orthomolecular.org>
Dato: 3. marts 2020 kl. 20.13.57 CET
Emne: Shanghai Government Officially Recommends Vitamin C for COVID-19



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FOR IMMEDIATE RELEASE
Orthomolecular Medicine News Service, Mar 3, 2020

Shanghai Government Officially Recommends Vitamin C for COVID-19

by Andrew W. Saul

(OMNS Mar 3, 2020) The government of Shanghai, China has announced its official recommendation that COVID-19 should be treated with high amounts of intravenous vitamin C. (1) Dosage recommendations vary with severity of illness, from 50 to 200 milligrams per kilogram body weight per day to as much as 200 mg/kg/day.

These dosages are approximately 4,000 to 16,000 mg for an adult, administered by IV. This specific method of administration is important, says intravenous therapy expert Atsuo Yanagisawa, MD, PhD, because vitamin C's effect is at least ten times more powerful by IV than if taken orally. Dr. Yanagisawa is president of the Tokyo-based Japanese College of Intravenous Therapy. He says, "Intravenous vitamin C is a safe, effective, and broad-spectrum antiviral."

Richard Z. Cheng, MD, PhD, a Chinese-American specialist physician, has been working closely with medical and governmental authorities throughout China. He has been instrumental in facilitating at least three Chinese clinical IV vitamin C studies now underway. Dr. Cheng is presently in Shanghai continuing his efforts to encourage still more Chinese hospitals to implement vitamin C therapy incorporating high oral doses as well as C by IV.

Dr. Cheng and Dr. Yanagisawa both recommend oral vitamin C for prevention of COVID-19 infection.

An official statement from Xi'an Jiaotong University Second Hospital (2) reads:

"On the afternoon of February 20, 2020, another 4 patients with severe new coronaviral pneumonia recovered from the C10 West Ward of Tongji Hospital. In the past 8 patients have been discharged from hospital. . . [H]igh-dose vitamin C achieved good results in clinical applications. We believe that for patients with severe neonatal pneumonia and critically ill patients, vitamin C treatment should be initiated as soon as possible after admission. . .[E]arly application of large doses of vitamin C can have a strong antioxidant effect, reduce inflammatory responses, and improve endothelial function. . . Numerous studies have shown that the dose of vitamin C has a lot to do with the effect of treatment. . . [H]gh-dose vitamin C can not only improve antiviral levels, but more importantly, can prevent and treat acute lung injury (ALI) and acute respiratory distress (ARDS)."

For more information, below is a list of previous reporting by OMNS on COVID-19 and vitamin C:

Mar 1, 2020

News Media Attacks Vitamin C Treatment of COVID-19 Coronavirus

Feb 28, 2020

Vitamin C and COVID-19 Coronavirus

Feb 23, 2020

TONS OF VITAMIN C TO WUHAN: China Using Vitamin C against COVID

Feb 21, 2020

Three Intravenous Vitamin C Research Studies Approved for Treating COVID-19

Feb 16, 2020

Early Large Dose Intravenous Vitamin C is the Treatment of Choice for 2019-nCov Pneumonia

Feb 13, 2020

Coronavirus Patients in China to be Treated with High-Dose Vitamin C

Feb 10, 2020

VITAMIN C AND ITS APPLICATION TO THE TREATMENT OF nCoV CORONAVIRUS: How Vitamin C Reduces Severity and Deaths from Serious Viral Respiratory Diseases

Feb 2, 2020

Hospital-based Intravenous Vitamin C Treatment for Coronavirus and Related Illnesses

Jan 30, 2020

Nutritional Treatment of Coronavirus

Jan 26, 2020

Vitamin C Protects Against Coronavirus

 

References

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Editorial Review Board:

Ilyès Baghli, M.D. (Algeria)
Ian Brighthope, MBBS, FACNEM (Australia)
Prof. Gilbert Henri Crussol (Spain)
Carolyn Dean, M.D., N.D. (USA)
Damien Downing, M.D. (United Kingdom)
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Garry Vickar, MD (USA)
Ken Walker, M.D. (Canada)
Anne Zauderer, D.C. (USA)

 

Andrew W. Saul, Ph.D. (USA), Editor-In-Chief
Editor, Japanese Edition: Atsuo Yanagisawa, M.D., Ph.D. (Japan)
Editor, Chinese Edition: Richard Cheng, M.D., Ph.D. (USA)
Robert G. Smith, Ph.D. (USA), Associate Editor
Helen Saul Case, M.S. (USA), Assistant Editor
Michael S. Stewart, B.Sc.C.S. (USA), Technology Editor
Jason M. Saul, JD (USA), Legal Consultant

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