hydrochlorot and doxazosin and nifedipine er (interaction)

Nifedipine may interact with other medications used for treatment of high blood pressure and diuretics. It also interacts with medications used for treatment of prostate problems, like doxazosine is. As hydrochlorot is used in treatment of hbp, there is risk of interaction of nifedipine and hydrochlorot. When used at the same time, these medications have increased effect on heart, as I don’t know what exactly your condition is like, I can not say if these are the doses that you need. Anyway, these drugs absolutely interact and have additive effect on blood pressure.

I would like to know if there are any side affects (and what they are) with drinking orange juice while taking nifedipine xr for my blood pressure. I have been doing this for a few days and the medication doesn't seem to be working as well as it was before.

What pentoxifylline(1400 mg) med is prescribed for? I am taking 2800 mg per day.

I have leukemia and taking hydroxychloroquine for it. Can you tell me more about this drug? Especially about possible side effects. Thanks.