system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it that cytotoxic drugs can be consumed but has a label to advise to avoid physical contact?

Wouldn’t it do more damage if absorbed into our blood?
gpt
The pharmacists have done lengthy studies on how it is appropriate to administer every drug in the safest and the most effective way as they all have side effects to the body. 

Cytotoxic drugs basically attack all cells in your body. With the proper administration they will be much more harmful to cancer cells than to your body because, for instance, your healthy tissue regenerates faster than cancerous tissue. Exposing those drugs to your skin will just unnecessarily damage your skin tissue which might lead to complications.