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Table 2 Frequency of preclinical toxicity studies in herbal medicine dossiers submitted in Tanzania (2009–2020)

From: Safety profile of herbal medicines submitted for marketing authorization in Tanzania: a cross-sectional retrospective study

Toxicity study type

Number of applications (%) (n = 32)

Acute single dose

32 (100)

Sub-chronic/repeat dose

9 (28)

Chronic

11 (34)

Developmental

3 (9)

Carcinogenicity

6 (19)

  1. n = total number of dossiers with preclinical studies