Please capitalize where necessary: i had a physical reaction when the zero tolerance was revoked.
A: I had a physical reaction when the zero tolerance was revoked.

Please capitalize where necessary: when a new version is is released, you have to apply changes to your customers' existing database so new code can work for them, too.
A: When a new version is is released, you have to apply changes to your customers' existing database so new code can work for them, too.

Please capitalize where necessary: play the farmer: take care of your farm
A: Play The Farmer: Take Care of Your Farm

Please capitalize where necessary: care should be taken, as osteolysis (the active resorption or dissolution of bone tissue) could result in a compromised mandible (lower jaw).
A:
Care should be taken, as osteolysis (the active resorption or dissolution of bone tissue) could result in a compromised mandible (lower jaw).