Figure 2

From: Oral magnesium supplementation in asthmatic children: a double-blind randomized placebo-controlled trial

Figure 2

Methacholine-induced bronchial challenge. After 2 months of magnesium supplementation, the dose of methacholine necessary to induce a 20% fall in the FEV1 was significantly higher in the magnesium group (MG) compared to the placebo control group (PC) (*P<0.05, Tukey's test).