Angiotensin-converting enzyme inhibitors (ACE inhibitors), angiotensin receptor blockers (ARBs), angiotensin receptor-neprilysin inhibitors (ARNIs), beta-adrenoceptor antagonists (BBs), sodium-glucose co-transporter 2 inhibitors (SGLT2-is), mineralocorticoid receptor antagonists (MRAs) and diuretics are the seven drug classes that are used in HF patients [18]. Here, ACE is linked to hydrops fetalis.