Can you drink beer if you take amlodipine?

I started using this drug after a doctor's advice 4 days ago. My BP was 150/100 when I started taking (5 mg daily). The following day my BP dropped to 130/90. One day later (before yesterday) it reached 120/80. I was encouraged by this and started salt free meal yesterday. But the same day I drank four glasses of beer unlike the previous days. I did not have good sleep yesterday and the PB raised to 150 /100. Note that I took the tablet yesterday too. My feeling is that the beer might have reacted with the drug and hence the increased bp level. I have not drunk alcohol today and expect it will get better tomorrow.