Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using levodopa inhalation and call your doctor or seek emergency medical attention if you have a wheezing, chest tightness, or trouble breathing after inhaling this medicine.
Call your doctor at once if you have:
extreme drowsiness, falling asleep suddenly (even after feeling alert);
nausea, sweating, and a light-headed feeling (like you might pass out);
uncontrolled muscle movements in your face (chewing, lip smacking, frowning, tongue movement, blinking or eye movement);
confusion, paranoia, hallucinations (seeing or hearing things that are not real);
unusual thoughts or behavior;
trouble sleeping, or increased dreaming;
agitation, aggression; or
increased sexual urges, unusual urges to gamble, or other intense urges.
Some people using this medicine have fallen asleep during normal daytime activities such as working, talking, eating, or driving. This side effect has occurred up to 1 year after the start of treatment with levodopa inhalation. Tell your doctor if you have any problems with daytime drowsiness.
Common side effects may include:
cough;
cold symptoms such as stuffy nose, sneezing, sore throat;
nausea; or
sweat, urine, or saliva that appears dark in color.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Levodopa side effects (more detail)
