General MedicineGeneral Medicine
Tiazac

Tiazac

Without insurance

With insurance

Most insurance accepted

Board-certified clinicians

No hidden fees

Available nationwide

What is Tiazac?

Tiazac is an extended-release formulation of diltiazem, a calcium channel blocker used to treat high blood pressure, chronic stable angina, and certain heart rhythm disorders including atrial fibrillation and atrial flutter. It works by blocking calcium channels in both vascular smooth muscle and cardiac muscle cells — relaxing blood vessels to lower blood pressure and slowing the electrical conduction through the heart to control rate. Unlike dihydropyridine calcium channel blockers like amlodipine, Tiazac acts on both the heart and blood vessels, making it effective for both blood pressure and heart rate management. It's taken once daily.

Dual cardiac and vascular calcium blockade

Blocks calcium channels in both blood vessel walls and cardiac conduction tissue — relaxing peripheral blood vessels to reduce blood pressure while also slowing AV node conduction to control ventricular rate in atrial fibrillation.

Heart rate and rhythm control

By slowing electrical conduction through the AV node, Tiazac controls the rapid ventricular rate associated with atrial fibrillation and flutter — reducing palpitations, improving cardiac efficiency, and protecting the heart from rate-related damage.

Extended-release once-daily control

Tiazac's extended-release formulation delivers diltiazem consistently over 24 hours, providing smooth blood pressure and heart rate control without the variability of shorter-acting formulations and with a simplified once-daily dosing schedule.

Virtual visit with clinician

Ongoing support, always available.

Your care doesn’t end after your visit. Message your care team anytime to discuss side effects, ask questions about your medication, or request a refill.

We stay proactive so your care stays steady — adjusting your plan as needed and keeping you informed every step of the way.

What our customers have to say

Everything is upfront

Everything is upfront and exactly what they state. No hidden costs or fees. Great experience!

Leslie

5 out of 5 stars on Trustpilot

I felt heard and they followed through

I felt heard and they followed through until my prior authorization was approved after it was denied. They maintained communication with me until I received my medication.

Nichelle C

5 out of 5 stars on Trustpilot

Got refills quickly and affordably

I needed medication refills, and they were able to fill them quickly and affordably.

Mya Harbison

5 out of 5 stars on Trustpilot

Quick and easy from booking to Zoom

Everything was quick and easy from booking the blood work to our Zoom appointment. The doctor was pleasant and attentive.

Judy S

5 out of 5 stars on Trustpilot

Listened and responded right away

The physician I was paired with listened to all of my concerns and responded right away. She was thorough, and I received my medication within hours.

Camille

5 out of 5 stars on Trustpilot

Prescription confirmed within 45 minutes

I’d run out of a medication while I was in the process of changing doctors. I provided some information, and my prescription was done and confirmed within 45 minutes.

Mark

5 out of 5 stars on Trustpilot

Thorough history check and a prompt prior authorization

They were very thorough in checking my medical history for any possible problems with the new medication, and very prompt in handling the prior authorization with the pharmacy and the insurance carrier.

Louis

5 out of 5 stars on Trustpilot

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