Advances in Therapy

, Volume 18, Issue 4, pp 189–193

Preventing the common cold with a garlic supplement: A double-blind, placebo-controlled survey

  • Peter Josling

DOI: 10.1007/BF02850113

Cite this article as:
Josling, P. Adv Therapy (2001) 18: 189. doi:10.1007/BF02850113


One hundred forty-six volunteers were randomized to receive a placebo or an allicin-containing garlic supplement, one capsule daily, over a 12-week period between November and February. They used a five-point scale to assess their health and recorded any common cold infections and symptoms in a daily diary. The active-treatment group had significantly fewer colds than the placebo group (24 vs 65,P < .001). The placebo group, in contrast, recorded significantly more days challenged virally (366 vs 111,P < .05) and a significantly longer duration of symptoms (5.01 vs 1.52 days,P < .001). Consequently, volunteers in the active group were less likely to get a cold and recovered faster if infected. Volunteers taking placebo were much more likely to get more than one cold over the treatment period. An allicin-containing supplement can prevent attack by the common cold virus.


allicin common cold garlic supplement 

Copyright information

© Health Communications Inc 2001

Authors and Affiliations

  • Peter Josling
    • 1
  1. 1.Garlic Centre BattleEast SussexUK

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