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Ineffective
Bottom Line
Prevention with Vitamin C supplement (Ascorbic acid tablets). 20 valid study conducted, with 9,017 individuals. Has no preventive effect. May speed up recovery by 8%. Seems safe.
Do not use this treatment:
It does not prevent cold symptoms, and it only slightly speeds up recovery. The treatment seems safe but pointless.
Any excess of Vitamin C (Ascorbic acid) is evacuated from our body through the urine. This makes vitamin C pretty safe even in high dosages.
Ascorbic Acid tablets
Target Population:
healthy Adults, 16 to 65 years old
Dosage:
Daily dosage of 0.2 gram per day, or more (adjusted to age, gender and body weight).
Goal:
Prevention of Common Cold symptoms
Benefits:
Does not prevents Common Cold cases. Speeds up recovery by 8%, and may reduce the severity of colds.
Risks:
0.2-2 gram of Vitamin C per day seems safe for healthy adults and has no side effects. Doctor consultation is needed for diabetic adults, or when in-taking iron (since Vitamin C increases iron absorption).
Medical problem:
Common Cold (symptoms caused by viral infection of the upper respiratory system).
Symptoms and signs:
Cough, general discomfort, headache, runny nose, sneezing, sore throat, stuffy nose and weakness.
Complications:
Bacterial infections: lung infection, middle ear infection, strep throat, sinus infection.
Vitamin C (supplement)
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