Personally, I've never heard of it, but I think anything in a hard pill form is less affective than a liquid 
or a capsule.  Are you aware that just eating some fresh garlic daily will also keep away colds and flu? 
And be sure to keep up with the Vit D3 on a daily basis during Winter months.
		 
		
		
		
		
		
		
			
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				May you always have..Love to Share, Health to Spare, and Friends that Care!
			 
		
		
		
		
		
	
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