Nausea, vomiting, diarrhea, exacerbation of inflammatory diseases of the gastrointestinal tract, flatulence, abdominal pain of a spastic nature, thirst, electrolyte imbalance (fatigue, asthenia, confused consciousness, arrhythmia, seizures), hypermagnesia in the presence of renal failure (early signs of hypermagnesia: bradycardia, diplopia, sudden "tide" of blood to the skin of the face, headache, dizziness, lowering of blood pressure, nausea, shortness of breath, lubricated speech, vomiting, weakness).