The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Sleepiness
- Feeling tired
- Headache
- Dizziness
- Constipation
- Nausea
- Vomiting
- Stomach pain
Less Common Side Effects
- Upset stomach or indigestion
- Dry mouth
- Sweating
- Irregular heartbeat
- Feeling nervous
- Changes to vision
- Itching
- Rash
- Difficulty urinating
Levorphanol serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Dangerously slow breathing: trouble breathing; bluish-colored lips, fingers, or toes
- Accidentally taking too much (overdose): not responding to sound or touch, slowed breathing, extreme sleepiness, slow heartbeat, cold or clammy skin
- Opioid withdrawal: anxiety, suicidal thoughts, irritability, restlessness, runny nose, yawning, sweating, chills, wide pupils
- Serious allergic reaction: hives; shortness of breath; chest tightness; swelling of lips, tongue, throat, face, or eyes
Source: DailyMed
The following Levorphanol side effects have also been reported
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:
Incidence not known
Agitation
attempts at killing oneself
bluish lips or skin
blurred vision
change in consciousness
cold, clammy skin
confusion
darkening of the skin
decrease in the frequency of urination
decreased awareness or responsiveness
decreased urine output
difficulty in passing urine (dribbling)
difficulty swallowing
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
extra heartbeat
extremely shallow or slow breathing
fast, slow, irregular, pounding, or racing heartbeat or pulse
fast, weak pulse
hostility
hives or welts, itching, skin rash
lightheadedness
loss of appetite
loss of consciousness
muscle twitching
no blood pressure or pulse
not breathing
overactive reflexes
poor coordination
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
rapid weight gain
restlessness
seizures
severe sleepiness
shivering
stopping of the heart
sweating
swelling of the face, ankles, or hands
talking or acting with excitement you cannot control
tightness in the chest
trembling or shaking
twitching
unusual drowsiness, dullness, tiredness, weakness or feeling of sluggishness
vomiting
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Chest pain or discomfort
constricted, pinpoint, or small pupils (black part of the eye)
decreased awareness or responsiveness
difficult or troubled breathing
difficulty with sleeping
dilated neck veins
disorientation
drowsiness to profound loss of consciousness
extreme tiredness or weakness
headache
irregular, fast or slow, or shallow breathing
no muscle tone or movement
not breathing
pale or blue lips, fingernails, or skin
seeing, hearing, or feeling things that are not there
sleepiness or unusual drowsiness
swelling of the face, fingers, feet, or lower legs
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:
Incidence not known
Abnormal dreams
absence of or decrease in body movement
belching
change in personality
changes in vision
discouragement
double vision
false beliefs that cannot be changed by facts
feeling sad or empty
increase in body movements
indigestion
irritability
loss of interest or pleasure
loss of memory
nervousness
poor insight and judgment
problems with memory or speech
redness of the skin
seeing double
stomach discomfort, upset, or pain
sweating
trouble concentrating
trouble recognizing objects
trouble sleeping
trouble thinking and planning
trouble walking
twitching, twisting, uncontrolled repetitive movements of the tongue, lips, face, arms, or legs
upper abdominal or stomach pain
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.
Other Levorphanol articles
Other Opioids side effects articles
Why trust our experts?
