Better question: do you even have a first aid kit?
If so, is it store bought, or did you piece it together like we did? Do you take it everywhere, or do you only pack it in certain situations? We take our kit backpacking and on the road with us.
If you don’t have a first aid kit, the list below should be a decent start.
Our kit contains the following materials, carefully prepared by my wife, the physician assistant: