Herbal compositions vary unpredictably in dose where synthetic drugs are standardized

Evidence

If I need a medicinal active ingredient, then I want to have this one substance in a constant dosage and residue-free from a monitored production and not in a composition that changes depending on the weather with some plant residues whose effect no one knows. — Holm Gero Hümmler, Ulrike Schiesser, Fact and Prejudice, 732

Categorization

• DEFINE: Clarifies why standardization of dosage matters to medicine: batch-to-batch weather-dependent variation.