my baby is 8 months old he is crying more by tightinng the body and crying

A. babies 8 months old and is continuously crying baby can become irritable to to teeth eruption as it is very painful for babyteething makes baby cranky due to pain swelling and gum irritation. Can give a silicon or wooden teether or pacifier for ease irritation. clean and massage  baby s gums by fingers. give vit d 3 vita must d 3 or KLM D 3 or D SOL 800 I U 0. 5 ml or 400 I U 1 ml daily till 1 year for strong bones and teeth