Skip to Content

User Reviews for Diltiazem to treat Atrial Fibrillation

Also known as: Cardizem, Cartia XT, Dilt-XR, Cardizem CD, Diltiazem Hydrochloride CD, Matzim LA, Tiazac, Tiadylt ER, Diltiazem Hydrochloride XR, Diltia XT, Dilacor XR, Diltiazem Hydrochloride SR, Cardizem LA, Taztia XT, Diltzac …show all brand names

Diltiazem has an average rating of 6.8 out of 10 from a total of 40 ratings for the treatment of Atrial Fibrillation. 55% of reviewers reported a positive effect, while 23% reported a negative effect.

Diltiazem Rating Summary

6.8/10 average rating

40 ratings from 45 user reviews.

Compare all 32 medications used in the treatment of Atrial Fibrillation.

10
33%
9
13%
8
10%
7
5%
6
5%
5
10%
4
3%
3
8%
2
3%
1
13%

Reviews for Diltiazem

Phuphu November 13, 2019

“At first my Diltiazem dose was 30mg 4 times daily. Then Diltiazem XR 120mg once a day. Once in ER, Dr. gave me another Dilt 120 and it took care of the problem. My cardio Dr got the results of the ER he upped my Diltiazem to 180mg. Every time I take is for at least 3 days I awaken in the morning with heart palpitations. I went back to taking the 120mg. No heart palpitations in the morning. My PCP said talk to Cardio Dr before a lesser dosage. Took the 180 again. A week later the palpitations in the a.m. started again. I am very sensitive to lots of meds and had to stop Flecainide and Multaq for that very reason. Just on Diltiazem XR 120 now. Will see if the morning arising palpitations stop. I feel they do not know my body like I do. ”

7 / 10
Was this helpful?YesNo
chrislikesliving June 11, 2008

Cartia XT (diltiazem): “I am taking Cartia XT 240 MG for atrial fibrillation. It works and I have not noticed any other side effects other than being sleepy all of the morning. I take it at 6:30 am and usually could fall asleep without much prompting. However I'm not groggy and can concentrate fine. The heart is in rhythm and thats what counts.”

10 / 10
Was this helpful?YesNo
Sweaty one · Taken for 2 to 5 years August 4, 2016

Dilt-XR (diltiazem): “I was diagnosed with Sinus Tachycardia a few years ago. My resting heart rate was usually 130-140. Resting heart rate!! I was put on a medication that made me so tired I could barely function. After a month on that I insisted on switching and they gave me Dilt XR 120mg. I noticed some slowing of my heart rate and absolutely NO side effects. Still my heart rate was running around 100 and would get like hot flashes if I did much moving around, which made work miserable. I have increased my dosage to 360mg and I feel so much better. Pulse is running in the 70s and the hot flashes and sweating have almost gone away.”

10 / 10
Was this helpful?YesNo
CanCan · Taken for 1 to 6 months January 27, 2021

“I took diltiazem from Aug 2020-Jan 25th, 2021. It caused vitreous detachment in one of my eyes (luckily so far the retina hasn't detached) and Vasculitis in my legs. When I stopped it the burning and itching in my legs subsided (2 days later). Five days later it has stopped altogether. I was taking it for atrial fibrillation. I'm staying on blood thinner & will keep some of these with me in case I go into an abnormal heart rhythm. Taking it every day is a recipe for health disaster in my opinion.”

1 / 10
Was this helpful?YesNo
Magzmom · Taken for 6 months to 1 year April 16, 2018

“Have been taking Cardizem since August for an episode of A-fib, heart rate of 190. Received heavy dosages of Cardizem by IV in hospital finally controlled. Since coming home the side effects are becoming unbearable. I have severe headaches, body aches and stiffness so bad I feel like I’m walking through water. Shortness of breath now so bad I can hardly catch my breath after walking out to get the mail. Brain fog, horrendous weight gain, depression and really depressive thoughts. Complaints to my Dr. are ignored. I am stopping this medication today. Hope I can return to normal living.”

2 / 10
Was this helpful?YesNo
RdenicolaJR January 14, 2012

Cartia XT (diltiazem): “I really like this medicine. Take 180mg in the morning and one in evening. Really it is the right medicine for me. I am not tired at all, but make sure you take it everyday. I stopped for 2 days..felt really bad. I highly recommend this ...do not take any generics..pay the money for the real deal.”

10 / 10
Was this helpful?YesNo
canuck2016 · Taken for 10 years or more February 16, 2016

Tiazac (diltiazem): “Hi, I've been taking 240 mg of tiazac every evening for the past 11 years after a trip to the ER at 37 years old. I waited about 2 hours to call the paramedics, but after being unable to climb the stairs I decided to call them. My heartbeat was still well over 200 when I got to the ER. I was lucky to be in good shape because it is well possible my heart would not have held on at that rate for that long. Tiazac works great for me. At first I tried 2 pills per day, but did not work very well. After a few weeks my doctor switched me to long release 240 mg. I'm still with it 11 years later and training for a triathlon in the fall and 25 k next spring. If your conditions allows it, exercise ! and drink decaf. ! (for me at least)”

10 / 10
Was this helpful?YesNo
auntie mame · Taken for less than 1 month August 8, 2020

“was prescribed diltiazem by staff physician in hosp./ After 3 days use( A Saturday), had such swelling of my throat and could barely swallow any food so called my cardiologist on Monday, saw him on Tuesday. Was told this drug was a reliable age old successful treament. Also was encouraged to try again! I could not stand such pain ever again as am 88 yrs old and have many auto immune conditions including wheat allergy.”

1 / 10
Was this helpful?YesNo
nparks35 · Taken for 1 to 2 years May 9, 2015

“For years (More like forever) I kept getting diagnosed with panic attacks since by the time I would get to the ER the "episode" had stopped. Last year I had the worst and longest episode I'd ever experienced. By the time I got to the ER my heart rate was still in the 190's. At 41yrs old, I Finally found out it had been A-Fib the last 20 years. Was prescribed Diltiazem (Cardizem) 60mg every 6hrs and I love it! A little bumpy in the beginning. Sensitivity to sunlight and tiredness/dizzy but not bothersome to the point I wanted to stop. After about a week the mild side effects had passed and well, It's just awesome. I highly recommend to help control A-Fib symptoms.”

10 / 10
Was this helpful?YesNo
Gene D. · Taken for 1 to 6 months January 28, 2013

“I am 60 years old and started taking diltiazem 240mg about 11/20/2012 along with Xarelto 20mg and Sotalol 80mg twice a day after being diagnosed with atrial fibrillation. On 12/21/2012, I had an electrocardioversion that did not cure the atrial fibrillation. Today (1/28/2013), I visited my Cardiologist and my pulse is down to the low 60's, my BP is normal and the irregular heartbeat is under control. He said to discontinue the Xarelto, but to continue with the Diltiazem and Sotalol. He is monitoring my heart for the next 24 hours.”

9 / 10
Was this helpful?YesNo
jarc · Taken for less than 1 month July 27, 2013

Cardizem CD (diltiazem): “I was happy with medication, as I did not have as many side effect, but on day 17 of taking it, I developed a rash on my stomach, next day chest and lower back, third day neck and face. It was the only thing I was doing differently, so I looked up its side effects. Rash was listed and could occur within 10 to 20 days. It is a Saturday, so as advised online I stopped the medication. I hope this a temporary condition, and I can begin again, or an alternative can be found.”

5 / 10
Was this helpful?YesNo
FJG · Taken for 1 to 6 months March 28, 2017

“I am a 69 year old male , 6'4" currently about 210 #.About six months ago experienced afib when first diagnosed was given Metoprolol and within a few days was extremely weak and could hardly breath. My cardiologist changed to diltiazem and it was like night and day. I had plenty of energy and the breathing issues ended. Since being diagnosed with afib I have stopped drinking alcohol, began a low carb diet that includes lots of vegetables, protein and omega 3s. All in all a pretty healthy diet. I also have lost about 30lb in that time period. At my 6 month Doctors check up prior to meeting with my cardiologist I commented about discomfort in my breasts, and was diagnosed with Gynecomastia. Fasting blood sugar 104 to 132. Concerned”

6 / 10
Was this helpful?YesNo
JP · Taken for 6 months to 1 year July 25, 2019

“After six episodes of the inconvenience called AFib, a cardiologist in a town I was visiting Rx'd Cardizem CD. Now I have peace of mind and I'm confident I will have no recurrences. I have no side effects or drug contraindication.”

10 / 10
Was this helpful?YesNo
Vegasgal April 24, 2016

“180 mg is my friend. When I have an AFIB incident, about 4x per year, I double up the med and I convert soon after. Before I was educated, I ran to the hospital and they gave me cardia in IV form. NO bad side effects at all. Highly recommended”

10 / 10
Was this helpful?YesNo
Anonymous July 7, 2009

Cartia XT (diltiazem): “I use Cartia XT for A-fibrillation. The only problem I ran into was using generics. CVS switched their provider and it did not work as well. 2 days of A-fibrillation and I went on the real deal. What a difference, everything is back to normal.”

10 / 10
Was this helpful?YesNo
Eleanor1937 · Taken for less than 1 month June 2, 2016

“Have had intermittent A-Fib for several years, with no needed intervention. Recently began having chest pain and shortness of breath so went to my cardiologist. Was in continuous A-Fib, so he started me on Cardiazem. Worst side effects I have ever experienced. Nausea, vomiting, diarrhea, lightheadedness, fell once, profuse sweating, general malaise, just felt horrible. This was after only 3 tablets. No medication changes. Started on Coumadin, and had taken this for years without problems. Called Dr. and med. stopped. Just now beginning to overcome those dreadful side effects. BUT I do recommend this medication for those who can take it. My sister has been on it for years for A-Fib and has done great, only has rare A-Fib”

Was this helpful?YesNo
GonzoOne · Taken for less than 1 month February 17, 2019

“This drug tore my arms and legs up literally. Been off if it for five days and the insane intense and painful itching hasn't depreciated. I use a cream (CereVe anti itch) to dull itch but purple arm with scars and scabs and intense itching are no fun. Never again with this med. Cereve anti itching only dulls the itch and for only an hour.”

1 / 10
Was this helpful?YesNo
skbers · Taken for 1 to 6 months May 17, 2016

“breakthrough afib events At first had few side effects, after taking med for 3 mo, physical side effects are occurring. eg physical feeling of weakness, shaky feeling in arms, little more clumsy and less strong legs; tire more eassily with increased cognitive changes eg difficutly retrieving information, names etc”

5 / 10
Was this helpful?YesNo
Hdev · Taken for 1 to 6 months March 4, 2016

“have been on generic Cardizem since first bout with afib a month ago,,,,,many side effects like ankle swelling,,,,and at waistline,sharp pain stabs in the head,dizziness,blurred vision,,,,,just switched away from generic form and will see if the real deal makes a difference ,,,taking 120 extended dose one daily,,,being hopeful cause no sign of afib since that one time!!”

Was this helpful?YesNo
photoqueen August 10, 2009

Cartia XT (diltiazem): “I was on Cartia XT when they discontinued it. It is the ONLY drug that works for me. There was no warning from CVS either. I went into fibrillation. The doctor put me on four different drugs after that of which none worked. One was too hard and large to swallow, one had food dye and I am allergic, and one made my head ring terribly. Another one is on the way but it is twice a day. Since I also have fibromyalgia, I have to be extra careful. ”

10 / 10
Was this helpful?YesNo
JA Larson · Taken for 6 months to 1 year February 24, 2016

Cardizem (diltiazem): “I have had two episodes of lone a-fib, one 15 yrs ago and one six months ago. For the earlier episode I was placed on Toprol, Digoxin and Warfarin - it was HORRIBLE, I've never felt so sick in my life. This time, I was placed on 240 mg of Diltiazem and Xarelto. I have been on both for six months with the only minor issue being a bit of excess gas, small price to pay to keep the a-fib away.”

9 / 10
Was this helpful?YesNo
30days January 22, 2018

“Increases my systolic BP by 20 points. Gives me rapid heart. Doctors say this is not possible. They drive me crazy. I do not make this stuff up. I am very sensitive to many medications. I am going off it again. Was glad to see on here that another patient had increased BP.”

Was this helpful?YesNo
Nosnowbird - PA October 17, 2015

“I have been taking Diltiazem for at least 12 years at different dosages. I am now at 360 mg. It has worked wonders for my Afib and blood pressure. I always take it at night become since it makes me tired. My brother started taking it and it has really helped lower his blood pressure.”

10 / 10
Was this helpful?YesNo
Cheesehead in Wisco September 22, 2013

“I think this slows my heart rate down too much and causes the extra beats to be thrown in. I've found that when I'm at rest is when I have the issues. I've gotten a 2nd opinion and was switched to metoprolol. We'll see if that works better. ”

3 / 10
Was this helpful?YesNo
Navigaiter Meece March 3, 2015

“I've been taking 180mg timed-release dilt capsules for two years after my 95%-effective catheter ablation for atrial flutter. I still get mild and transient afibs most mornings at 5 a.m. or so. They stop after ten minutes or when i sit up or get up to use the restroom. I think the vagus nerve responds to bladder pressure and sends a wrong signal to the heart to act up. I'm on low dosage by prefernce. Perhaps I'll ask for higher dosage if the transient episodes start to last longer or feel more severe. I can barely feel the "quivering' sensation that afib causes in my chest so I am happy for now.”

8 / 10
Was this helpful?YesNo

This information is not intended to endorse any particular medication. While these reviews may be helpful, they are not a substitute for the expertise, knowledge and judgement of healthcare professionals.

Learn more about Atrial Fibrillation

IBM Watson Micromedex

Symptoms and treatments

Mayo Clinic Reference