Safety and efficacy of a traditional herbal medicine (Throat Coat) in symptomatic temporary relief of pain in patients with acute pharyngitis: a multicenter, prospective, randomized, double-blinded, placebo-controlled study.
J Altern Complement Med. 2003 Apr;9(2):285-98. doi: 10.1089/10755530360623400.
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PMID: 12804082
Clinical Trial.