Are there any interactions with medications?
Medications for high blood pressure (Antihypertensive drugs)
Be cautious with this combination.
Talk with your health provider.
Periwinkle seems to decrease blood pressure. Taking periwinkle along with medications for high blood pressure might cause your blood pressure to go too low.
Some medications for high blood pressure include captopril (Capoten), enalapril (Vasotec), losartan (Cozaar), valsartan (Diovan), diltiazem (Cardizem), Amlodipine (Norvasc), hydrochlorothiazide (HydroDiuril), furosemide (Lasix), and many others.
Dosing considerations for Periwinkle.
The appropriate dose of periwinkle depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for periwinkle. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.