desvenlafaxine (Oral route)Pronunciation
Antidepressant use has been associated with an increased risk of suicidal thinking and behavior in children, adolescents, and young adults. Short-term studies did not show an increase in the risk of suicidality with antidepressants compared with placebo in adults beyond age 24, and there was a reduction in risk with antidepressants compared with placebo in adults aged 65 or older. Monitor patients closely for clinical worsening, suicidality, or unusual changes in behavior. Desvenlafaxine is not approved for use in pediatric patients .Oral route(Tablet, Extended Release)
Antidepressants increased the risk of suicidal thinking and behavior in children, adolescents, and young adults during short-term studies. These studies did not show an increase in the risk of suicidality with antidepressants compared with placebo in adults older than 24 years, and there was a reduction in risk with antidepressants compared with placebo in adults aged 65 or older. Monitor patients closely for clinical worsening, suicidality, or unusual changes in behavior. Families and caregivers should be advised of the need for close observation and communication with the prescriber. Not approved for use in pediatric patients .
Commonly used brand name(s)
In the U.S.
Available Dosage Forms:
- Tablet, Extended Release
Therapeutic Class: Antidepressant
Pharmacologic Class: Serotonin/Norepinephrine Reuptake Inhibitor
Uses For desvenlafaxine
Desvenlafaxine is used to treat depression. It belongs to a group of medicines known as serotonin and norepinephrine reuptake inhibitors (SNRIs). These medicines are thought to work by increasing the activity of chemicals called serotonin and norepinephrine in the brain.
desvenlafaxine is available only with your doctor's prescription.
Before Using desvenlafaxine
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For desvenlafaxine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to desvenlafaxine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies have not been performed on the relationship of age to the effects of desvenlafaxine in the pediatric population. Safety and efficacy have not been established.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of desvenlafaxine in the elderly. However, elderly patients are more likely to have low blood pressure, hyponatremia (low sodium in the blood), and age-related kidney problems, which may require an adjustment in the dose for patients receiving desvenlafaxine.
|All Trimesters||C||Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.|
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with Medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking desvenlafaxine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using desvenlafaxine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
- Methylene Blue
Using desvenlafaxine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Amtolmetin Guacil
- Antithrombin III Human
- Choline Salicylate
- Dermatan Sulfate
- Flufenamic Acid
- Iobenguane I 123
- Mefenamic Acid
- Morphine Sulfate Liposome
- Niflumic Acid
- Nimesulide Beta Cyclodextrin
- Pentosan Polysulfate Sodium
- Salicylic Acid
- Sodium Salicylate
- St John's Wort
- Tiaprofenic Acid
- Tolfenamic Acid
Interactions with Food/Tobacco/Alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using desvenlafaxine with any of the following is usually not recommended, but may be unavoidable in some cases. If used together, your doctor may change the dose or how often you use desvenlafaxine, or give you special instructions about the use of food, alcohol, or tobacco.
Other Medical Problems
The presence of other medical problems may affect the use of desvenlafaxine. Make sure you tell your doctor if you have any other medical problems, especially:
- Bipolar disorder (mood disorder with mania and depression), or risk of or
- Bleeding problems or
- Glaucoma (angle-closure type) or
- Heart or blood vessel disease or
- Hyperlipidemia (high cholesterol or triglycerides in the blood) or
- Hypertension (high blood pressure) or
- Hyponatremia (low sodium levels in the blood) or
- Interstitial lung disease, or history of or
- Mania or hypomania, history of or
- Seizures, history of or
- Stroke, history of or
- Tachycardia (fast heart rate)—Use with caution. May make these conditions worse.
- Kidney disease or
- Liver disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.
Proper Use of desvenlafaxine
Take desvenlafaxine only as directed by your doctor to benefit your condition as much as possible. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered.
desvenlafaxine should come with a Medication Guide. Read and follow these instructions carefully. Ask your doctor if you have any questions.
You may have to take desvenlafaxine for several weeks before you begin to feel better.
Take the tablet with or without food, and at the same time every day.
Swallow the extended-release tablet whole with water. Do not dissolve, crush, break, or chew it.
Part of the tablet may pass into your stools. This is normal and nothing to worry about.
The dose of desvenlafaxine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of desvenlafaxine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
- For oral dosage form (extended-release tablets):
- For depression:
- Adults—50 milligrams (mg) once a day. Your doctor may adjust your dose as needed.
- Children—Use and dose must be determined by your doctor.
- For depression:
If you miss a dose of desvenlafaxine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
Precautions While Using desvenlafaxine
It is important that your doctor check your progress at regular visits, to allow for changes in your dose and to help reduce any side effects. Your doctor may want to check your blood and blood pressure for any unwanted effects caused by desvenlafaxine.
Do not take desvenlafaxine with a monoamine oxidase (MAO) inhibitor (eg, isocarboxazid [Marplan®], linezolid (Zyvox®), methylene blue injection, phenelzine [Nardil®], selegiline [Eldepryl®], tranylcypromine [Parnate®]). Do not start taking desvenlafaxine during the 14 days after you stop a MAO inhibitor and wait 7 days after stopping desvenlafaxine before you start taking a MAO inhibitor. If you take them together or do not wait the proper amount of time, you may develop confusion, agitation, restlessness, stomach or intestinal symptoms, a sudden high body temperature, an extremely high blood pressure, or severe convulsions.
Do not take any medicine that contains venlafaxine (Effexor®) while you are using Khedezla® or Pristiq®.
Desvenlafaxine may cause some teenagers and young adults to be agitated, irritable, or display other abnormal behaviors. It may also cause some people to have suicidal thoughts and tendencies or to become more depressed. Some people may have trouble sleeping, get upset easily, have a big increase in energy, or start to act reckless. If you or your caregiver notice any of these unwanted effects, tell your doctor right away. Let the doctor know if you or anyone in your family has bipolar disorder (manic-depressive) or has tried to commit suicide.
Do not stop taking desvenlafaxine without first checking with your doctor. Your doctor may want you to gradually reduce the amount you are taking before stopping it completely to decrease the chance of side effects, such as agitation, breathing problems, chest pain, confusion, diarrhea, dizziness or lightheadedness, fast heartbeat, headache, increased sweating, muscle pain, nausea, restlessness, runny nose, trouble in sleeping, trembling or shaking, unusual tiredness or weakness, vision changes, or vomiting.
Desvenlafaxine may cause a serious condition called serotonin syndrome if taken together with some medicines. Do not use desvenlafaxine with buspirone (Buspar®), fentanyl (Abstral®, Duragesic®), lithium (Eskalith®, Lithobid®), tryptophan, St. John's wort, amphetamines, or some pain or migraine medicines (eg, rizatriptan, sumatriptan, tramadol, Frova®, Imitrex®, Maxalt®, Relpax®, Ultram®, Zomig®). Check with your doctor first before taking any other medicines with desvenlafaxine.
Tell your doctor right away if you have chest discomfort, a cough, or trouble breathing while using desvenlafaxine. These might be symptoms of a serious lung problem.
desvenlafaxine may increase your risk for bleeding problems. Make sure your doctor knows if you are also taking other medicines that thin the blood, such as aspirin, nonsteroidal antiinflammatory agents, also called NSAIDs (eg, diclofenac, ibuprofen, naproxen, Advil®, Aleve®, Celebrex®, Voltaren®), or warfarin (Coumadin®, Jantoven®).
desvenlafaxine may cause hyponatremia (low sodium in the blood). This is more common in elderly patients, those who are taking diuretic medicines for high blood pressure, or those who have decreased amounts of fluid in the body due to severe diarrhea or vomiting. Check with your doctor right away if you have confusion, a headache, memory problems, trouble concentrating, weakness, or feel unsteady when standing.
desvenlafaxine may cause some people to become dizzy, drowsy, or less alert than they are normally. Make sure you know how you react to desvenlafaxine before you drive, use machines, or do anything else that could be dangerous if you are not alert.
The use of alcohol is not recommended in patients who take desvenlafaxine.
Before you have any medical tests, tell the medical doctor in charge that you are taking desvenlafaxine. The results of some tests may be affected by desvenlafaxine.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.
desvenlafaxine Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:Less common
- cold sweats
- dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
- fast, pounding, or irregular pulse
- numbness or tingling in the arms or legs
- shakiness in the legs, arms, hands, or feet
- trembling or shaking of the hands or feet
- trouble thinking, speaking, or walking
- Blistering, peeling, or loose skin
- blood in the stool or urine
- chest tightness
- convulsions (seizures)
- dilated or enlarged pupils (black part of the eye)
- feeling irritated
- hives, itching, or rash
- joint pain, stiffness, or swelling
- large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
- loss of bladder control
- muscle pain
- muscle spasm or jerking of all extremities
- red skin lesions, often with a purple center
- red, irritated eyes
- red skin
- sore throat
- sores, ulcers, or white spots in the mouth or on the lips
- sudden loss of consciousness
- swelling of the eyelids, face, lips, hands, or feet
- talking, feeling, or acting with excitement
- trouble breathing or swallowing
- unusual bruising
- unusual tiredness or weakness
- vomiting blood
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:More common
- Bigger, dilated, or enlarged pupils (black part of the eye)
- decreased appetite
- inability to have an orgasm
- inability to have or keep an erection
- increased sensitivity of the eyes to light
- loss of sexual ability, desire, drive, or performance
- sleepiness or unusual drowsiness
- Change in taste
- continuous ringing, buzzing, or other unexplained noise in the ears
- decreased weight
- difficult urination
- fear or nervousness
- hearing loss
- increased sensitivity of the eyes to light
- lack or loss of strength
- loss of taste
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
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