Digitalis toxicity can cause:
Ref:KDT 6/e p498 Some early warning signs of overdose are confusion, loss of appetite, nausea, vomiting, diarrhea, or vision problems. Othersigns of overdose are changes in the rate or rhythm of the heabeat (becoming irregular or slow), palpitations (feeling of pounding in the chest), or fainting.
Hyperkalemia
Nausea
Arrhythmias
All of the above
Cardiovascular system