Stalevo is a combination medication that treats Parkinson's disease (PD) in adults. It has carbidopa (a dopa decarboxylase inhibitor), levodopa (a dopamine replacement), and entacapone (a COMT inhibitor). The addition of entacapone helps the effects of the medication last longer. This helps lessen "off" time (when movement symptoms come back as the medication wears off). Side effects include involuntary movements, nausea, and diarrhea. Stalevo is available as a brand name and generic.
Parkinson's disease (PD)
Stalevo is a combination of three ingredients: carbidopa, levodopa, and entacapone. These ingredients work together to bring up the dopamine dopamine levels in the brain. This helps relieve symptoms of Parkinson's disease (PD).
Levodopa is a dopamine replacement. Once you take levodopa, it travels into the brain where it turns into dopamine. When there's more dopamine in the brain, PD symptoms lessen.
Carbidopa is a dopa decarboxylase inhibitor, and entacapone is a catechol-O-methyltransferase (COMT) inhibitor. Dopa decarboxylase and COMT are proteins in the body that break down levodopa before it reaches the brain. By blocking these proteins, more levodopa can get to the brain and turn into dopamine. It helps both levodopa and dopamine reach and stay at higher levels in the brain. This enhances levodopa's ability to relieve PD symptoms.
Source: DailyMed
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:
More common-Entacapone
Twitching, twisting, or uncontrolled repetitive movements of the tongue, lips, face, arms, or legs
Incidence not known-Carbidopa and Levodopa and/or Levodopa alone
Bleeding gums
bloody or black, tarry stools
bloody or cloudy urine
change in size, shape, or color of an existing mole
changes in skin color
chest pain, discomfort, or tightness
constricted pupil
convulsions
difficult or labored breathing
difficulty with speaking
drooping eyelid (ptosis)
facial dryness
fast, irregular, or pounding heartbeat
fever with or without chills
general feeling of illness
hallucinations (seeing, hearing, or feeling things that are not there)
hoarseness
large, flat, blue, or purplish patches in the skin
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
loss of appetite
loss of bladder control
lower abdominal or stomach pain
lower back or side pain
mole that leaks fluid or bleeds
muscle cramps or spasms
muscle pain or stiffness
muscle trembling, jerking, or stiffness
painful or difficult urination
pinpoint red spots on the skin
raised red swellings on the skin, the buttocks, legs, or ankles
restlessness
severe mental changes
shakiness and unsteady walk
shuffling walk
sores, ulcers, or white spots on the lips or in the mouth
sweating
swollen glands
trembling, or other problems with muscle control or coordination
unusual bleeding or bruising
unusual tiredness or weakness
vomiting
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:
Less common-Entacapone
Acid or sour stomach
belching
bitter, sour, or unusual taste in the mouth
bloated
burning feeling in the chest or stomach
excess air or gas in the stomach or intestines
fear
full feeling
hyperventilation
increased sweating
indigestion
irritability
lack or loss of strength
passing gas
restlessness
sleepiness or unusual drowsiness
stomach discomfort or upset
swollen mouth and tongue
tenderness in the stomach area
trouble sleeping
urge to have bowel movement
Incidence not known-Carbidopa and Levodopa and/or Levodopa alone
Being forgetful
bladder pain
blurred vision
body aches or pain
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
burning and upper abdominal or stomach pain
burning sensation of the tongue
clenching, gnashing, or grinding teeth
confusion about identity, place, and time
dark saliva
dark sweat
decreased mental acuity
difficulty swallowing
discouragement
double vision
ear congestion
enlarged pupils
excessive watering of the mouth
fainting
false or unusual sense of well-being
feeling like you will pass out
feeling of warmth
feeling sad or empty
flushing
headache
hiccups
hives or welts
increased blinking
increased interest in sexual ability, desire, drive, or performance
increased interest in sexual intercourse
lack of appetite
large, hard skin blisters
leg pain
loss of voice
muscle spasm, especially of the neck and back
nightmares
numbness
pain in the chest below the breastbone
painful or prolonged erection of the penis
pharyngeal pain
pounding in the ears
problems with memory or speech
redness of the face, neck, arms, and occasionally upper chest
sense of stimulation
skin rash
slow movement
slow or fast heartbeat
slow reflexes
swelling
tremor, increased
trouble concentrating
trouble recognizing objects
trouble thinking and planning
urinary frequency
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.
Combines three medications into a single pill, so you don't have to take as many tablets to control your PD symptoms
Helps relieve PD symptoms for a longer period of time than carbidopa/levodopa alone
Available in six different strengths, so your prescriber can adjust your dose if needed
Okay to take if you have kidney problems
Usually need to take multiple times per day to help relieve PD symptoms
Might need to first take immediate-release carbidopa/levodopa and entacapone separately until you find the right dose before switching to Stalevo
Can make you very sleepy and cause you to fall asleep all of a sudden
Can make the color of your saliva, sweat, and urine darker
Take Stalevo with or without food. Avoid taking the medication with a high-fat, high-calorie, or high-protein meal. Examples include avocados, cheese, and peanut butter. These foods can slow the medication from getting absorbed into the body by about 2 hours.
Only take 1 Stalevo tablet when it's time for you to take the medication. All tablet strengths of Stalevo contain 200 mg of entacapone. Taking more than 1 Stalevo tablet at once can raise your risk of side effects.
Swallow the Stalevo tablet whole. Don't cut, crush, or chew them. If you have trouble swallowing pills whole, tell your prescriber so they can find other options for you.
Stalevo can make you very sleepy and even cause you to fall asleep suddenly, even if you don't feel tired. Don't drive or do anything that needs your focus until you know how the medication affects you.
Stalevo can cause or worsen uncontrolled movements of your body. These involuntary movements are called dyskinesia. It happen sooner and at lower dosages than with carbidopa/levodopa-only medications (like Sinemet). Let your prescriber know if you have uncontrolled movements that bother you a lot.
Stalevo can cause nausea, vomiting, or diarrhea in some people. Make sure to drink plenty of fluids to prevent dehydration if you have these side effects during treatment. Talk to a healthcare professional if they don't get better. They can check whether there's something else going on.
Stalevo can make the color of your saliva, sweat, and urine darker (e.g., red, brown, black). Though it's harmless, these colored bodily fluids can stain your clothing.
Ask your prescriber or pharmacist before taking iron supplements or multivitamins that contain iron. Iron can cause less Stalevo to get absorbed into your body. This can affect how well Stalevo works to relieve your PD symptoms.
Stalevo can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
Risk factors: History of drowsiness | History of sleep problems | Taking sedatives or medications that make you drowsy
Some people taking Stalevo have fallen asleep out of nowhere. This has happened even when they didn't feel tired beforehand. It can happen during activities like talking or eating. In some cases, people have fallen asleep while driving. It's sometimes led to accidents.
Because of this risk, avoid driving or doing things that need your full attention until you know how Stalevo affects you. This is especially important if you often feel sleepy or have suddenly fallen asleep before. Also avoid taking medications that make you sleepy while taking Stalevo. They can make you even sleepier.
Tell your prescriber know if you feel very sleepy during the daytime while taking Stalevo. Also let them know if you fall asleep during activities that you need to be alert for.
Risk factors: History of low blood pressure
Some people who take Stalevo can have low blood pressure. It can cause a drop in blood pressure when you stand from a sitting or lying down position. Low blood pressure can lead to dizziness, lightheadedness, and sometimes fainting.
To lower your risk of falling, get up slowly when you stand. Tell your prescriber if your blood pressure is lower than usual or if you feel dizzy while taking Stalevo.
Risk factors: History of mental health conditions
Stalevo can cause depression with or without suicidal behavior. Get medical help right away if you or the people around you notice that you have signs of depression or thoughts of hurting yourself while taking this medication.
Some people taking medications like Stalevo have had hallucinations. Others can also have feelings of uneasiness or distress. Tell your prescriber if you or your loved ones notice you're having hallucinations while you're taking Stalevo. Also let them know about any unusual behaviors or unusual thoughts.
Parkinson's medications that raise dopamine levels, like Stalevo, can cause impulsive behavior. These behaviors can include strong sexual urges and gambling urges. They can also be urges to spend a lot of money and binge eating. Urges can be hard to control.
Tell your prescriber if these behaviors negatively affect your life while taking Stalevo. You might not notice these urges. So, your prescriber might ask about them at your next visit.
Although rare, starting Stalevo, suddenly lowering the dose suddenly, or stopping it too fast can cause high fever and confusion. It can be life-threatening if these symptoms happen along with muscle stiffness, irregular pulse, rapid breathing, or changes in blood pressure.
Don't stop taking Stalevo or lower your dose without talking to your prescriber first. They can instruct you on how to do this safely.
The entacapone in Stalevo can cause people to have diarrhea. In studies, some had mild-to-moderate diarrhea. Rarely, people had severe diarrhea. People started to have diarrhea in the first few months of treatment. But it can sometimes start as early as the first week.
Keep in mind that diarrhea can be a sign of inflammation in the colon (colitis). Diarrhea in this case can be moderate to severe with watery, non-bloody stool. You might also have stomach pain.
Sometimes, diarrhea and colitis can lead to weight loss, dehydration, and low potassium levels. Be sure to drink lots of fluids to stay hydrated.
Tell your care team if you have any diarrhea or other related symptoms while taking Stalevo. Most of the time, diarrhea and colitis get better or go away after stopping the medication.
Some people who took Stalevo had severe muscle damage called rhabdomyolysis, which can be serious. Tell your prescriber right away if you have muscle aches, soreness, cramping, or a fever while you're taking Stalevo. These can be signs of serious muscle damage.
Stalevo can interact with a few medications and cause side effects. Examples include apomorphine (Apokyn), methyldopa, and epinephrine (EpiPen). Taking Stalevo with these medications can raise your heart rate and blood pressure. It can cause changes to your heart rhythm.
It's also harmful to take Stalevo with nonselective monoamine oxidase inhibitors (MAOIs). Don't take Stalevo with nonselective MAOIs, like phenelzine (Nardil) and tranylcypromine (Parnate). Note that some Parkinson's medications like rasagiline (Azilect) and selegiline are selective MAO-B inhibitors. You can take these Parkinson's medications with Stalevo.
Share a list of all your medications with your care team. They can check for interactions and make sure you're safe.
Let your prescriber know if you've had a stomach ulcer before. This is because Stalevo might raise your risk of stomach bleeding. Get medical help right away if you have severe stomach pain, vomit or cough up blood, or notice black stools that look like tar. These can be signs of stomach bleeding.
Stalevo is available in many strengths. All tablets have different amounts of carbidopa and levodopa. But they all contain 200 mg of entacapone.
Your dose will depend on how well your previous medications have been helping with your Parkinson's symptoms.
For people previously taking Sinemet (carbidopa / levodopa) plus entacapone (Comtan): The dose will usually stay the same. You can switch straight to the Stalevo tablet with the same amount of carbidopa, levodopa, and entacapone as your previous regimen.
For people previously taking Sinemet (carbidopa / levodopa) alone: You'll usually start by taking entacapone (Comtan) along with your Sinemet (carbidopa / levodopa). Your prescriber will slowly adjust your doses until your symptoms are under control. Once they find the right dose for you, you'll switch to a Stalevo tablet that's the same dose.
Using this medicine 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.
Using this medicine 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.
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Parkinson's disease (PD)
Parkinsonism (conditions that cause people to have signs and symptoms of PD, including slowness, stiffness, shakiness, and imbalance)
Parkinson's disease (PD)
Parkinsonism (conditions that cause people to have symptoms of PD, including tremors, slowness, and stiffness)
By providing your email, you consent to receive marketing communications from GoodRx, which may include content and/or data related to men’s health, women's health, reproductive care, or sexual health. You agree to the GoodRx Terms of Use and acknowledge the Privacy Policy. You can unsubscribe at any time.
American Parkinson Disease Association. (2024). Carbidopa/levodopa: Answers to frequently asked questions.
Fiedorowicz, J. G., et al. (2004). The role of monoamine oxidase inhibitors in current psychiatric practice. Journal of Psychiatric Practice.
Gandhi, K. R., et al. (2023). Levodopa (L-dopa). StatPearls.
Jenner, P. (2023). Stalevo®: A pioneering treatment for OFF periods in Parkinsons disease. European Journal of Neurology.
Parkinson’s Foundation. (n.d.). Dyskinesia.
Parkinson’s Foundation. (n.d.). Managing “off” time in Parkinson’s.
Rising Pharma Holdings, Inc. (2022). Carbidopa, levodopa, and entacapone tablet, film coated [package insert]. DailyMed.
Research prescriptions and over-the-counter medications from A to Z, compare drug prices, and start saving.