Intestinal parasite infection

Overview

Vitamin A is the only supplement indexed for intestinal parasite infection (1 study; WA 32; very low effect size, low evidence, medium trust). The trial focused on whether a single high oral dose of vitamin A could prevent children from getting intestinal parasites again after worm treatment.

Adding vitamin A did not lower reinfection rates compared with no extra treatment in that study of treated children. With only one trial showing no preventive benefit, vitamin A is not supported for parasite reinfection prevention here. See the evidence review below.

Effect graph

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Evidence visualised

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