Protein tyrosine phosphatase inhibition by gallium nitrate has been demonstrated in Jurkat and HT-29 human colon cancer cells, but a correlation between enzyme inhibition and cell proliferation was not found [ 84]. Monitor therapy QT-prolonging Agents (Highest Risk): QT-prolonging Agents (Indeterminate Risk – Caution) may enhance the QTc-prolonging effect of QT-prolonging Agents (Highest Risk). It also lowers vaginal pH, aiding in the prevention of infection Viagra utan recept. The gastric fundus is posterior to the gastric antrum; barium falls into the gastric fundus when the patient lies in a supine position.