Sedex Diazepam Lansoprazole + Amoxicillin + Clarithromycin
ModerateLansoprazole (the acid-reducing part of this combination) has been studied in healthy people, and it did not show any meaningful interaction with Diazepam. Diazepam is broken down by the same liver enzyme system (cytochrome P450) as many other medicines, but taking it with Lansoprazole did not change how it works. So this combination is not expected to cause a problem on its own account. Still, take Diazepam only as your doctor has prescribed, and tell your doctor or pharmacist about all the medicines you are using.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.