Rasagiline is used alone or with other medications (such as levodopa/carbidopa) to treat symptoms of Parkinson's disease. It can help improve symptoms such as shakiness, stiffness, and difficulty moving. It can also help reduce the amount of "off" time (periods of slow movement or stiffness).

Rasagiline belongs to a class of drugs known as MAO inhibitors. It works by increasing the levels of certain natural substances in the brain (such as dopamine, norepinephrine, serotonin). Parkinson's disease is thought to be caused by too little dopamine in the brain.

Take this medication by mouth with or without food as directed by your doctor, usually once daily.

The dosage is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Do not increase your dose or take it more often than prescribed. Your condition will not improve any faster, and your risk of side effects will increase.

Do not stop taking this medication without consulting your doctor. Some conditions may become worse when this drug is suddenly stopped. Your dose may need to be gradually decreased.

A very serious high blood pressure reaction may rarely occur if you eat a large amount of tyramine while taking rasagiline and for 2 weeks after you stop it. Avoid foods that are high in tyramine, like aged cheeses (such as Stilton cheese). Consult your doctor or dietician about which foods you should avoid and if you do not feel well after eating or drinking certain foods while taking this medication. See also Side Effects section.

Tell your doctor if this medication stops working well or if your condition gets worse.

Dizziness, drowsiness, joint pain, heartburn, nausea, dry mouth, weight loss, or stomach/abdominal pain may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position, especially when you first start taking rasagiline.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if you have any serious side effects, including:

• fainting
• loss of balance
• mental/mood changes (such as confusion, depression, hallucinations)
• worsening muscle stiffness/twitching/uncontrollable movements
• swollen ankles/legs
• easy bleeding/bruising
• unusual strong urges (such as increased gambling, increased sexual urges)

Some people taking rasagiline have fallen asleep suddenly during their usual daily activities (such as talking on the phone, driving). In some cases, sleep occurred without any feelings of drowsiness beforehand. This sleep effect may occur anytime during treatment with rasagiline even if you have used this medication for a long time. If you experience increased sleepiness or fall asleep during the day, do not drive or take part in other possibly dangerous activities until you have discussed this effect with your doctor. Your risk of this sleep effect is increased by using alcohol or other medications that can make you drowsy. See also Precautions section.

This medication may increase serotonin and rarely cause a very serious condition called serotonin syndrome/toxicity. The risk increases if you are also taking other drugs that increase serotonin, so tell your doctor or pharmacist of all the drugs you take. Get medical help right away if you develop some of the following symptoms:

• fast heartbeat
• hallucinations
• loss of coordination
• severe dizziness
• severe nausea/vomiting/diarrhea
• twitching muscles
• unexplained fever
• unusual agitation/restlessness

This drug may rarely cause an attack of extremely high blood pressure (hypertensive crisis), which may be fatal. Many drug and food interactions can increase this risk (see How to Use and Drug Interactions sections). Get medical help right away if any of these serious side effects occur:

• severe headache
• fast/slow/irregular/pounding heartbeat
• chest pain
• neck stiffness/soreness
• severe nausea/vomiting
• sweating/clammy skin (sometimes with fever)
• widened pupils
• vision changes (such as double/blurred vision)
• sudden sensitivity to light (photophobia)

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including:

• rash
• itching/swelling (especially of the face/tongue/throat)
• severe dizziness
• trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Before taking rasagiline, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of:

• heart disease (such as coronary artery disease, heart attack, chest pain, heart failure)
• stroke
• high blood pressure
• severe/frequent headaches
• liver disease
• mental/mood disorders (such as schizophrenia, bipolar disorder, depression)
• diabetes
• overactive thyroid
• a certain adrenal gland tumor (pheochromocytoma)
• sleep disorders

This drug may make you dizzy or drowsy. Alcohol or marijuana (cannabis) can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis). See also Side Effects section.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding.

See also How to Use section.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Some products that may interact with this drug include:

• diet pills/appetite suppressants (such as diethylpropion)
• drugs for attention deficit disorder (such as atomoxetine, methylphenidate)
• apraclonidine
• bupropion
• buspirone
• carbamazepine
• cyclobenzaprine
• deutetrabenazine
• dextromethorphan
• methyldopa
• metoclopramide
• certain supplements (such as tryptophan, tyramine)
• tetrabenazine
• certain "triptans" used to treat migraine headaches (such as rizatriptan, sumatriptan, zolmitriptan)
• valbenazine

The risk of serotonin syndrome/toxicity increases if you are also taking other drugs that increase serotonin. Examples include street drugs such as MDMA/"ecstasy," St. John's wort, tramadol, certain opioid medications (such as fentanyl, meperidine, methadone, tapentadol), certain antidepressants (including maprotiline, mirtazapine, SSRIs such as fluoxetine/paroxetine, SNRIs such as duloxetine/venlafaxine, tricyclics such as amitriptyline/doxepin), among others. The risk of serotonin syndrome/toxicity may be more likely when you start or increase the dose of these drugs.

Some products can interact with rasagiline if you take them together, or even if you take them weeks before or after taking rasagiline. Tell your doctor or pharmacist if you take anything in the list of products that may interact with this drug, or any of the products that increase serotonin, within 2 weeks before or after taking rasagiline. Also tell them if you have taken fluoxetine within 5 weeks before starting rasagiline. Ask your doctor how much time to wait between starting or stopping any of these drugs and starting rasagiline.

Taking other MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Do not take any other MAO inhibitors (isocarboxazid, linezolid, metaxalone, methylene blue, moclobemide, phenelzine, procarbazine, safinamide, selegiline, tranylcypromine) during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before and after treatment with this medication. Ask your doctor when to start or stop taking this medication.

Before using rasagiline, report the use of drugs that may increase the risk of extremely high blood pressure (hypertensive crisis) when combined with rasagiline, including herbal products (such as ephedra/ma Huang), allergy and cough-and-cold products (including dextromethorphan, decongestants such as phenylephrine/pseudoephedrine), and stimulants (such as amphetamines, ephedrine, epinephrine, phenylalanine). Rasagiline should not be used with any of these medications. Talk to your doctor or pharmacist for more details.

Tell your doctor or pharmacist if you are taking other products that cause drowsiness including alcohol, marijuana (cannabis), antihistamines (such as cetirizine, diphenhydramine), drugs for sleep or anxiety (such as alprazolam, diazepam, zolpidem), muscle relaxants (such as carisoprodol), and opioid pain relievers (such as codeine, hydrocodone).

If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call 1-800-222-1222. Canada residents can call 1-844-764-7669. Symptoms of overdose may not appear for up to 12 hours and may include: irritability, restlessness, dizziness, drowsiness, sweating, fast heartbeat, headache, confusion, seizures.

Do not share this medication with others.

Lab and/or medical tests (such as blood pressure) will be done while you are taking this medication. Keep all medical and lab appointments.

If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.

Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.