My doctor gave me phentermine for my follow up from my anxiety medication. i'm taking lorazepam 0.5mg. is there any drug interactions between the two?

YES: One is a CNS stimulant and the other is the opposite. There is a risk according to the literature of central nervous system (CNS) depression. My advice would be to seek another opinion

Interaction Checker: You can use a drug interaction checker whenever you have questions about drug-drug interactions or drug - food interactions. Here is 1 option (Drugs.Com): https://www.drugs.com/drug_interactions.php Your pharmacist is also a good source of info.