Carbamazepine

Carbamazepine Uses, Dosage, Side Effects, Mechanism of Action, How Long Does it Take to Work? Carbamazepine is a brand name. Its generic name is Carbamazepine.

Carbamazepine Introduction

Carbamazepine is an anticonvulsant, also known as an antiepileptic drug, that was first discovered in 1953 and introduced into medical use in 1960. It is used to treat seizures, trigeminal neuralgia, episodic pain, and bipolar disorder.

Uses for Carbamazepine

Carbamazepine is commonly used to treat seizures, primarily those associated with epilepsy. It is also used to treat bipolar disorder, as well as for relieving pain from trigeminal neuralgia and to reduce the frequency of episodes of manipulation of the pain associated with diabetic neuropathy.

Mechanism of Action

Carbamazepine acts on ligand-gated ion channels in the brain, modulating the influx of sodium and calcium and modulating the release of certain neurotransmitters. The mechanism of action is not fully understood, but it is thought that carbamazepine binds to certain binding sites on the sodium and calcium channels, causing a decrease in the frequency of their opening. This leads to a decrease in the influx of sodium and calcium, which leads to a decrease in the release of certain neurotransmitters.

How Long Does it Take to Work?

The effects of carbamazepine can be felt within 1 to 2 weeks of starting treatment. The general rule of thumb is that it takes at least two weeks for the drug to reach its full potential, so patients should not expect to see complete improvement within the first two weeks.

Absorption

Carbamazepine is rapidly and completely absorbed from the gastrointestinal tract. It is highly protein-bound, and its concentration in the plasma is dependent on the degree of protein binding. Carbamazepine is almost entirely metabolized in the liver.

Route of Elimination

Carbamazepine is metabolized in the liver and then eliminated primarily in the urine via the kidneys and some in bile via the gallbladder.

Dosage

Carbamazepine is typically given once or twice a day in tablets, capsules, or liquid suspensions. The recommended starting dose is 200mg (either once or twice daily) and is gradually increased to 100mg-400mg per day. The maximum recommended dose is 1,200 mg, and the highest dose is typically 3,000 mg/day.

Administration

Carbamazepine can be taken with or without food. The tablets can be swallowed whole, or the capsules can be opened and the contents taken with a full glass of water.

Side Effects

Common side effects associated with carbamazepine include: nausea, vomiting, headache, dizziness, fatigue, blurred vision, and loss of coordination. Other less common side effects include: rash, rash-like reactions, itching, hives, increased sweating, confusion, and difficulty speaking. Severe side effects are rare, but they can include: a change in behavior, depression, memory loss, and psychosis.

Toxicity

Carbamazepine is generally well tolerated and the most common side effects are minor. However, prolonged use of high doses may lead to a gradual increase in side effects that could lead to toxicity and other harmful effects. Patients should consult with their physician if they experience any serious side effects.

Precautions

To reduce the risk of toxicity, patients should avoid taking higher than recommended doses of carbamazepine. In addition, it is important to tell your doctor if you have had liver or kidney disease, or if you are pregnant or breastfeeding. Patients should also tell their doctor about any other medications or supplements they are taking, as carbamazepine can interact with some drugs.

Interaction

Carbamazepine can interact with other drugs, including those used to treat depression, anxiety, and psychosis, as well as other antiepileptic drugs. In addition, carbamazepine can interact with alcohol, barbiturates, and sedatives, so you should avoid using these substances while taking the drug.

Disease Interaction

Carbamazepine can interact with certain diseases, such as kidney and liver disease, and should be used cautiously in patients with these conditions. It is also important to tell your doctor if you have a history of depression, anxiety, or other mental health conditions.

Drug Interaction

Carbamazepine can interact with several other drugs, including those that treat depression and psychosis, as well as anti-seizure medications. The most serious interactions occur with the antiepileptic drugs phenytoin and valproic acid, so it is important to tell your doctor if you are taking these medications.

Food Interactions

When taken with food, the absorption of carbamazepine may be decreased; thus, it is usually recommended that the medication be taken on an empty stomach for maximum absorption. Carbamazepine also interacts with grapefruit juice and should not be taken with it.

Pregnancy Use

Carbamazepine is generally not recommended for use during pregnancy due to the risk of neonatal withdrawal symptoms. However, if the benefits outweigh the risks, it may be prescribed in the third trimester.

Lactation Use

Carbamazepine should generally not be used during breastfeeding due to increased risk of diarrhea, skin rash, and other side effects in the infant. If the benefits of this drug outweigh the risks, it may be prescribed with caution.

Acute Overdose

Carbamazepine overdose is a medical emergency. Symptoms can include nausea, vomiting, confusion, drowsiness, coordination problems, seizures, and coma. If you or someone you know suspects a carbamazepine overdose, call 911 or a poison control center immediately.

Contraindication

Carbamazepine is contraindicated in patients who are hypersensitive to the drug, or who have a history of liver disease or kidney disease. It is also contraindicated in patients who are taking monoamine oxidase inhibitors (MAOIs) as these drugs may increase risk of side effects.

Use Direction

Carbamazepine should be taken according to your doctor’s instructions. The dose and dosage form depend on the type of medical condition you are treating. Swallow the medication whole and take it with a full glass of water. Do not crush or chew the tablets or capsules, as this can increase the risk of side effects.

Storage Condition

Store carbamazepine at room temperature, away from light and moisture. Do not store it in the bathroom, where extreme moisture and heat can alter the drug’s effectiveness. Make sure to keep this medication out of the reach of children.

Volume of Distribution

Carbamazepine has an apparent volume of distribution of 0.7 liters per kilogram. This means that the drug is widely distributed within the body and can be found in most tissues and body fluids.

Half Life

The half-life of carbamazepine is approximately 6 to 18 hours. This means that it takes 6 to 18 hours for the drug to be reduced by half in the body.

Clearance

The clearance of carbamazepine is approximately 0.2 liters per hour per kilogram. This means that the drug is cleared from the body at a rate of 0.2 liters per hour per kilogram of body weight.

Here you find in details version of Carbamazepine

Some Frequently Asked Questions About Carbamazepine

What is Carbamazepine?

Carbamazepine is an anticonvulsant, or anti-seizure, medication and is used to treat epilepsy, trigeminal neuralgia, and bipolar disorder.

What are the side effects of taking Carbamazepine?

The most common side effects of taking Carbamazepine include dizziness, drowsiness, nausea, vomiting, double vision, blurred vision, and loss of appetite. Serious side effects can include skin reactions, low white blood cell count, liver damage, and changes in behavior.

What is the recommended dosage of Carbamazepine?

The recommended dosage of Carbamazepine varies depending on the indication for use and patient's age. The usual starting dose for adults is 100 - 200 mg twice a day. This may be increased gradually up to a maximum dose of 1,200 mg per day.

Can I take Carbamazepine while pregnant?

It is generally not recommended to take Carbamazepine during pregnancy unless the benefits clearly outweigh the risks. Studies have shown an increased risk of birth defects when using this medication during the first trimester. Pregnant women should talk to their healthcare provider about the benefits and risks of taking Carbamazepine.

What are the potential drug interactions of Carbamazepine?

Carbamazepine can interact with other medications, vitamins, and herbal products. Be sure to inform your healthcare provider of any medications you are taking before starting Carbamazepine.

What should I do if I miss a dose of Carbamazepine?

If you miss a dose of Carbamazepine, take it as soon as you remember. If it is close to your next dose, skip the missed dose and continue with your regular schedule. Do not double up on doses.

How long does it take for Carbamazepine to start working?

It usually takes a few weeks for Carbamazepine to start working. It is important to take it as prescribed and to not stop taking it abruptly, as this may cause seizures or other side effects.

Is Carbamazepine a controlled substance?

Yes, Carbamazepine is a controlled substance and is classified as a Schedule V drug under the Controlled Substances Act.

What is the half-life of Carbamazepine?

The half-life of Carbamazepine is approximately 30 hours.

What is the generic name for Carbamazepine?

The generic name for Carbamazepine is carbamazepine, or Tegretol.

What forms of Carbamazepine are available?

Carbamazepine is available as an oral tablet, oral suspension, and extended release tablet.

Is Carbamazepine addictive?

No, Carbamazepine is not known to be addictive. However, as with all medications, there is a risk of developing physical or psychological dependence, especially with long-term use.

Can I drink alcohol while taking Carbamazepine?

It is not recommended to drink alcohol while taking Carbamazepine, as it can increase the risk of certain side effects and may interfere with the effectiveness of the medication.

What laboratory tests should be monitored while taking Carbamazepine?

It is important to have regular blood tests and liver function tests done while taking Carbamazepine. These tests can help monitor for side effects and effectiveness of the medication.

Can Carbamazepine cause weight gain?

It is possible for Carbamazepine to cause weight gain. However, this is not the most common side effect and it is usually seen in combination with other medications.

Is it safe to take Carbamazepine when breastfeeding?

It is generally not recommended to take Carbamazepine while breastfeeding as it can be passed through breast milk. Women should talk to their healthcare provider about the benefits and risks of taking Carbamazepine while breastfeeding.

Is Carbamazepine used to treat depression?

No, Carbamazepine is not approved by the FDA to treat depression. However, it is sometimes used off-label for depression in combination with other medications.

How long does it take for Carbamazepine to be fully absorbed?

Carbamazepine is typically rapidly absorbed, with peak levels occurring 1-3 hours after oral administration.

Can Carbamazepine be taken with other medications?

Carbamazepine can interact with many other medications, and it is important to let your healthcare provider know all medications and supplements you are taking before starting Carbamazepine.

Does Carbamazepine interact with food?

No, Carbamazepine does not typically interact with food.

What should I do if I experience a skin rash while taking Carbamazepine?

It is important to contact your healthcare provider if you experience a skin rash while taking Carbamazepine. This is a sign of an allergic reaction and may worsen if not treated promptly.

Can Carbamazepine cause insomnia?

Yes, insomnia can be a side effect of taking Carbamazepine. If you are experiencing insomnia, talk to your healthcare provider to see if there is another medication that may be better for you.

What is the use of Carbamazepine in the treatment of bipolar disorder?

Carbamazepine is used to treat both manic and depressive episodes of bipolar disorder. It is thought to work by stabilizing the neurotransmitters in the brain that may be associated with bipolar disorder.

Can Carbamazepine cause anxiety?

Yes, Carbamazepine can cause anxiety in some people. If you are experiencing anxiety while taking this medication, talk to your healthcare provider.

Does Carbamazepine cause cognitive impairment?

Yes, cognitive impairment is a potential side effect of taking Carbamazepine. If you are experiencing cognitive impairment while taking this medication, it is important to contact your healthcare provider.

Can Carbamazepine cause liver damage?

Yes, liver damage is a potential side effect of taking Carbamazepine. It is important to inform your healthcare provider of any changes in liver function tests while taking this medication.

Is Carbamazepine used for the treatment of alcohol withdrawal?

Yes, Carbamazepine is sometimes used for the treatment of alcohol withdrawal. However, it is usually not the first line treatment and is typically used in combination with other medications.

Can Carbamazepine be taken with an antacid?

Yes, Carbamazepine can be taken with an antacid as long as they are taken at least two hours apart. It is best to take the antacid first, followed by the Carbamazepine.

Can Carbamazepine cause anemia?

Yes, anemia is a possible side effect of taking Carbamazepine. Contact your healthcare provider if you are experiencing any signs or symptoms of anemia, such as fatigue or shortness of breath.

What should I do if I experience changes in my mood while taking Carbamazepine?

If you experience changes in your mood while taking Carbamazepine, it is important to talk to your healthcare provider to determine if the medication is still appropriate for you.

What medications should not be taken with Carbamazepine?

Certain medications should not be taken with Carbamazepine, such as certain antibiotics, antifungals, certain heart medications, and certain seizure medications. If you need to take any of these medications, talk to your healthcare provider before starting Carbamazepine.

Can Carbamazepine be used for the treatment of anxiety disorders?

No, Carbamazepine is not approved by the FDA for the treatment of anxiety disorders. However, it may be used off-label for this purpose in combination with other medications.

Can Carbamazepine be used in the elderly?

Yes, Carbamazepine can be used in the elderly, but it is important to start at a lower dose and adjust according to response. The elderly may also be more susceptible to side effects from Carbamazepine, so it is important to monitor closely.

Does Carbamazepine affect blood sugar levels?

Yes, Carbamazepine can affect blood sugar levels. It is important to monitor your blood sugar levels regularly while taking Carbamazepine.

Can Carbamazepine cause hair loss?

Yes, hair loss is a possible side effect of taking Carbamazepine. If you are experiencing hair loss while taking this medication, contact your healthcare provider.

Can Carbamazepine be used in children?

Yes, Carbamazepine can be used in children for the treatment of seizures and other conditions, but it is important to start at a lower dose and adjust according to response. Children may also be more susceptible to side effects from Carbamazepine, so it is important to monitor closely.

Can I take ibuprofen with Carbamazepine?

Yes, it is generally safe to take ibuprofen while taking Carbamazepine. However, it is still important to talk to your healthcare provider before combining any medications or supplements.

Can Carbamazepine be taken with antacids?

Yes, Carbamazepine can be taken with antacids as long as they are taken at least two hours apart. It is best to take the antacid first, followed by the Carbamazepine.

Can Carbamazepine cause nausea and vomiting?

Yes, nausea and vomiting are possible side effects of taking Carbamazepine. If you are experiencing these symptoms, talk to your healthcare provider to see if there is another medication that may be better for you.

Can Carbamazepine cause an increase in cholesterol levels?

Yes, an increase in cholesterol levels is a possible side effect of taking Carbamazepine. If this occurs, it is important to talk to your healthcare provider for blood tests and lifestyle management.

Does Carbamazepine have any effects on fertility?

Yes, Carbamazepine can affect fertility in some people. If you are planning to become pregnant or if you are experiencing difficulty becoming pregnant, talk to your healthcare provider.

Can Carbamazepine cause dry mouth?

Yes, dry mouth is a possible side effect of taking Carbamazepine. If you are experiencing dry mouth, talk to your healthcare provider to see if there is another medication that may be better for you.

https://www.medicinesfaq.com/brand/carbamazepine, http://classyfire.wishartlab.com/tax_nodes/C0000000, http://classyfire.wishartlab.com/tax_nodes/C0000002, http://classyfire.wishartlab.com/tax_nodes/C0000293, http://classyfire.wishartlab.com/tax_nodes/C0000320, http://classyfire.wishartlab.com/tax_nodes/C0000320, http://classyfire.wishartlab.com/tax_nodes/C0000069, http://classyfire.wishartlab.com/tax_nodes/C0002448, http://classyfire.wishartlab.com/tax_nodes/C0000517, http://classyfire.wishartlab.com/tax_nodes/C0004139, http://classyfire.wishartlab.com/tax_nodes/C0004557, http://classyfire.wishartlab.com/tax_nodes/C0000278, http://classyfire.wishartlab.com/tax_nodes/C0003940, http://classyfire.wishartlab.com/tax_nodes/C0004150, http://classyfire.wishartlab.com/tax_nodes/C0001831, https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:3387, http://www.hmdb.ca/metabolites/HMDB0014704, http://www.genome.jp/dbget-bin/www_bget?drug:D00252, http://www.genome.jp/dbget-bin/www_bget?cpd:C06868, https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=2554, https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46507583, https://www.chemspider.com/Chemical-Structure.2457.html, http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50003659, https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=2002, https://www.ebi.ac.uk/chebi/searchId.do?chebiId=3387, https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL108, https://zinc.docking.org/substances/ZINC000000004785, http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000129, http://www.pharmgkb.org/drug/PA448785, https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/N6W, http://www.rxlist.com/cgi/generic/carbam.htm, https://www.drugs.com/carbamazepine.html, https://en.wikipedia.org/wiki/Carbamazepine,