Diltiazem Hcl - Uses, Side Effects, Warnings, and More

Diltiazem Hcl – Uses, Side Effects, Warnings, and More

Diltiazem Hcl – Uses, Side Effects, Warnings, and More

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Diltiazem is taken to lessen or prevent the occurrence of chest discomfort (angina). It might be helpful to improve your capacity to exercise and cut down on the number of times you get angina attacks. One type of calcium channel blocker is known as diltiazem. It achieves this by slowing the heart rate and relaxing the blood arteries throughout the body, including those in the heart. Because of this, blood may flow more easily, and your heart does not have to work as hard to pump it.

Instructions for taking diltiazem by mouth

Unless otherwise ordered by your physician, take this medication orally three to four times daily, preferably before meals and before going to bed.

Your current medical condition, how well you are responding to treatment, and any other medications you may be taking all play a role in determining the appropriate dosage for you. Make sure to inform both your primary care physician and your pharmacist about all of the products you use (including prescription drugs, nonprescription drugs, and herbal products). It’s possible that your doctor will gradually boost your dosage. Be sure to pay close attention to the directions that your doctor gives you.

Make sure you take this medication as directed for it to have the desired effect. Utilizing it at the same time each day will assist you in remembering it. In order to avoid getting angina, you need to take this medication on a consistent basis. It is not appropriate to use it as a treatment for angina when it arises. In order to alleviate an attack of angina, your doctor may recommend that you use alternative medications (such as nitroglycerin sublingual spray). For further information, speak with either your physician or pharmacist.

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If your situation gets worse, you should let your doctor know (for example, if your chest pain worsens or is more frequent).

Side Effects

It is possible to experience symptoms such as lightheadedness, dizziness, weakness, nausea, flushing, constipation, and headaches. Notify your doctor or pharmacist as soon as possible if any of these side effects continue or become worse.

When rising from a seated or laying position, make sure to rise carefully to reduce the likelihood of experiencing dizziness and lightheadedness.

Keep in mind that the reason your doctor has recommended that you take this medication is that he or she believes that the potential benefits to you outweigh the potential risks of doing so. The majority of persons who take this medicine do not report experiencing any severe adverse effects.

Notify your physician as soon as possible if you experience any serious side effects, such as persistent nausea and/or vomiting, passing out, new or worsening symptoms of heart failure (such as shortness of breath, swelling ankles/feet, unusual tiredness, unusual/sudden weight gain), slow, irregular, pounding, or fast heartbeat, mental or mood changes (such as depression or agitation), unusual dreams, severe stomach or abdominal pain, dark urine, or yellowing of the eyes or

It is quite unusual for this medicine to cause an extremely severe allergic reaction. However, you should seek immediate medical attention if you detect any symptoms of a significant allergic reaction, such as a rash, itching/swelling (particularly of the face/tongue/throat), extreme dizziness, or difficulty breathing. These symptoms may indicate anaphylaxis.

This list of potential adverse effects is not exhaustive in any way. Please consult your physician or pharmacist if you have any side effects that are not listed above.

In the United States, if you are experiencing any adverse effects, please consult your primary care physician. You can call the FDA at 1-800-FDA-1088 or visit their website at www.fda.gov/medwatch to report any adverse effects.

In Canada, if you are experiencing any adverse effects, please consult your primary care physician. You can call Health Canada at 1-866-234-2345 to report any adverse effects you experience.


Inform your doctor or pharmacist that you are allergic to diltiazem, as well as if you have any additional allergies, before beginning treatment with the medication. There is a possibility that this product contains inactive substances, which, if present, could result in allergic responses or other complications. Discuss the matter further with your pharmacist for further information.

Before beginning treatment with this medication, it is important to discuss your medical history with your doctor or pharmacist, particularly any of the following conditions: certain types of heart rhythm problems (such as sick sinus syndrome/atrioventricular block), liver disease, kidney disease, and heart failure.

This medicine may make you dizzy. Alcohol or marijuana (cannabis) can make you dizzier. Do not get behind the wheel of a vehicle, operate any machinery, or engage in any activity that requires attentiveness until you are able to do it safely. Reduce your intake of alcoholic beverages. If you are a marijuana user, you should consult your primary care physician (cannabis).

Inform your surgeon or dentist that you will be taking this medicine before you have any kind of procedure done.

It’s possible that those over the age of 65 will be more vulnerable to the adverse effects of this medication, particularly the symptoms of dizziness, constipation, and ankle and foot swelling.

During pregnancy, it is important to only use this drug when it is absolutely necessary. Talk to your healthcare provider about the potential drawbacks and advantages.

This medication is excreted into breast milk and may have unintended consequences for an infant who is being breastfed. Before starting to breastfeed, you should talk to your healthcare provider.


Drug interactions can alter the way in which your prescriptions work or raise the likelihood that you will have major adverse effects. This document does not contain all possible medication interactions. Maintain a list of all the goods you use, including prescription and over-the-counter medications, as well as herbal remedies, and give it to both your primary care physician and your pharmacist. Without first consulting your physician, you should never alter the dosage of any medication, stop taking any medication, or start taking any new medication.

Digoxin and fingolimod are two examples of products that could potentially interact with this medication.

Because the elimination of diltiazem from your body might be influenced by other medications, the effectiveness of this medication could be altered as a result. Cimetidine, St. John’s Wort, azole antifungals like ketoconazole, macrolide antibiotics like erythromycin, and rifamycins like rifabutin and rifampin are a few examples of such medications.

This medicine has the potential to slow down the elimination of other medications from your body, which may have an effect on how effectively other treatments operate. Drugs such as aprepitant/fosaprepitant, asunaprevir, buspirone, colchicine, flibanserin, ivabradine, lomitapide, and some benzodiazepines (triazolam, midazolam), amongst others, are examples of those that have been impacted by this issue.

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Certain goods contain components that can cause an increase in your heart rate or make the chest pain you’re feeling much worse. Tell your pharmacist what products you are using and ask for instructions on how to use them safely. This is especially important for over-the-counter nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen and naproxen.


Dial 911 if you suspect that someone has overdosed and they are exhibiting serious symptoms such as passing out or having problems breathing. In any other case, you should immediately contact a poison control centre. To reach the poison control centre for your area in the United States, dial 1-800-222-1222. Canada residents can call a provincial poison control centre.


This drug should not be given to anyone else.

It is possible that you will be subjected to a battery of laboratory and/or medical tests (such as evaluations of your kidney and liver function, as well as your pulse, blood pressure, and electrocardiogram) on a regular basis in order to track your improvement and identify any potential adverse reactions. Consult your doctor for additional details.

There are numerous brands and formulations of this drug that may be purchased. The majority do not produce the same results. Do not switch brands or types of medication without first discussing the matter with your healthcare provider or pharmacist.

Neglected Dose

If you forget to take a dose, you should take it as soon as you realise you forgot. If it is getting close to the time of the next dose, you should forgo the dose that you missed. Your next dose should be taken at the typical time. It is not necessary to double the dose in order to catch up.


Keep at room temperature and away from light and moisture. Store at room temperature. Keep away from the bathroom at all costs. Always make sure that children and animals are kept well away from any medications.

Unless you have been specifically told to do so, you should not flush drugs down the toilet or pour them down a drain. When it is no longer needed or has passed its expiration date, dispose of this product in the appropriate manner. Talk to your neighbourhood pharmacy or the firm that handles garbage disposal in your area.

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