Final answer:
The correct way to complete the sentence is to contact a psychiatrist if you think your loved one needs a new or adjusted prescription.
Step-by-step explanation:
Marita works with patients with mental health issues and is creating a booklet for their families. The correct way to complete the sentence is:
Please stay aware of the types of prescriptions your loved one takes, and whether they are taking the appropriate doses. Sometimes, when people think they know which medicine is good for them, they begin to self-assess. In other words, they decide which medicines suit them the best on their own. If you think your loved one needs a new or adjusted prescription, please contact a psychiatrist.