I Take One Amlodipine 5 Mg Tab Every Night. Tonight

I take one Amlodipine 5 mg Tab every night. Tonight I was getting my husbands meds for him and for some reason I can't remember if I took my Amlodipine tonight. If I took another one in case I forgot my dose would it cause me some problem. I am 72 years old and except for borderline high blood pressure i am preety healthy.