<unk>  rapidly lowers blood pressure, and patients are commonly warned they may feel dizzy or faint after taking the first few doses. Tachycardia (fast heart rate) may occur as a reaction. These problems are much less frequent in the sustained-release preparations of<unk> . Extended release formulations of<unk>  should be taken on an empty stomach, and patients are warned not to consume anything containing grapefruit or grapefruit juice, as they raise blood<unk>  levels. There are several possible mechanisms, including the inhibition of CYP3A4-mediated metabolism. As calcium channel blocker,<unk>  has a risk of causing gingival hyperplasia
Nifedipine
Atenolol
Captopril
Metoprolol
Nebivolol
Hydralazine
Nitroglycerin 
Lisinopril