Quality
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Speaker: Mark Blumenthal. The chemically complex nature of herbs frequently requires additional..
$11.99
Speaker: Mark Blumenthal. Common adulterants and how they can be avoided in bilberry extract, g..
$11.99
Speaker: Roy Upton. Does echinacea work? Are toxic metals in herbal products? Does St. John's..
$11.99
Speaker: Roy Upton. The FDA recently implemented rules on Good Manufacturing Practices which have po..
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Speaker: Roy Upton. Quality issues are discussed including herbal adulteration, microbial contaminat..
$11.99
Speaker: Mark Blumenthal. The latest research, marketing and medicinal trends are reported along wit..
$11.99
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