Taking dipyridamole with indigestion medicines Some indigestion medicines, such as omeprazole, may reduce the effect of dipyridamole. Dosing • For transdermal dosage form (patch): • Adults—One patch applied once every 7 days. The maintenance dose should be infused over 24 hours immediately following the loading dose Viagra 100mg. Exposure to ENHERTU during pregnancy can cause embryo-fetal harm.