Is calcium injection administered by intravenous or intramuscular injection?

Under normal circumstances, calcium injections mainly refer to calcium gluconate injection, which is administered intravenously and should not be given via intramuscular injection. The specific analysis is as follows:

Calcium gluconate injection is a clear, colorless liquid whose primary component is calcium gluconate. It can be used to supplement calcium gluconate when individuals experience muscle cramps or spasms, rapidly helping to stabilize blood calcium levels with minimal side effects. As long as the injection rate is properly controlled, adverse reactions are generally rare. Calcium gluconate injection is intended for intravenous use only; intramuscular administration may cause severe local pain, swelling, and even muscle necrosis. When diluted with 10% dextrose injection and administered slowly via intravenous injection, it helps maintain normal excitability of nerves and muscles and promotes acetylcholine secretion at nerve endings.

If intramuscular injection is mistakenly chosen, it may reduce calcium activity in the blood, leading to severe local pain, swelling, muscle weakness, and potentially localized muscle necrosis. Moreover, calcium gluconate injection provides indirect calcium supplementation. Some individuals may experience nausea, vomiting, or dizziness. If gastrointestinal symptoms such as vomiting are particularly prominent, its use is not recommended.