含鈣保健品有很多種，碳酸鈣、磷酸鈣、檸檬酸鈣、胺基酸螯合鈣、乳酸鈣、葡萄糖鈣，每一種鈣，都有不同百分比的鈣離子含量和吸收率。也就是說，如果有一種鈣，鈣離子含量很高，但吸收率卻很低，吸收不到，那就白搭。在這些鈣的種類中，如果衡量鈣離子含量與吸收率，兩者加總狀況最好的要屬檸檬酸鈣了。
檸檬酸鈣的使用方法很多：
用於退燒
很久以前中醫就懂得使用石膏退燒，石膏裡的主要成份是硫酸鈣。現在我們知道，鈣質是免疫在作戰時，重要的溝通工具。發燒時骨頭會痛，便是取鈣的過程。所以現代版天然退燒最佳的選擇，便是含鈣保健品，而其中要屬檸檬酸鈣吸收最佳。
使用方法請參見：協助退燒的保健品如何使用？
腎病患的好幫手，做為磷結合物
腎臟受損傷時，不該排的會排掉，好像白蛋白，而該排的會排不掉，好像磷。肉類中有磷酸，而磷如果排不掉，就會在結晶，卡在皮膚下就會癢。現在研究發現，如果腎病患不能攝取足量的肉或蛋白質，就會發生嚴重的營養不良，而出現許多不良併發症。這是為什麼，美國現在很多腎臟中心，都建議腎病患在吃肉時，同時食用磷結合物，這樣磷可以順利排出體外。而檸檬酸鈣就是一種磷結合物。
肉吃的比較多時，每餐前一匙檸檬酸鈣 500mg
肉吃的比較少時，每餐前半匙檸檬酸鈣 250mg
攪拌於水裡喝
還癢增加半匙，不癢不用
如果長期使用，請定期檢測血鈣指數。
賁門閉鎖不全者，可用於中和胃酸
如果你有賁門閉鎖不全或鈣化的問題，躺下後胃酸會倒流灼傷食道。這時可以在睡前食用少量的檸檬酸鈣<500mg(不超過一小匙)，去中和胃酸，保護食道。
如果長期使用，請定期檢測血鈣指數。
雌激素下降，短暫補鈣
女生月經前，或是更年時期，都可能因為雌激素下降時出現骨頭痠痛、關節痠痛的問題，這時可以短暫少量的補充檸檬酸鈣。
一天一次500mg，攪拌於水裡喝。症狀解除後停用。請參見支援月經保健品使用方法。
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