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
- Drowsiness
- Trouble sleeping
- Restlessness
- Uncontrollable body movement
Less Common Side Effects
- Constipation
- Blurred vision
- Fainting or lightheadedness
- Nausea or vomiting
- Diarrhea
- Dry mouth or more salivation
- Changes in appetite
- Weight gain
- Very high fever
- Weakness
- Sexual side effects
- Absent or irregular menstrual periods
Thiothixene serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Neuroleptic malignant syndrome (NMS): very high fever, muscle stiffness, confusion, abnormal pulse, changes in blood pressure, fast heartbeat, sweating, changes in heart rhythm
- Uncontrolled muscle movements (tardive dyskinesia): involuntarily sticking out your tongue, puffing out your cheeks, puckering your mouth, lip smacking, chewing, foot tapping
- Serious infection (from low blood cell count): fever, weakness, fatigue, sore throat, cough, body aches, chills
- Seizures
Source: DailyMed
The following Thiothixene side effects have also been reported
Along with their needed effects, thioxanthenes can sometimes cause serious side effects. Tardive dyskinesia (a movement disorder) may occur and may not go away after you stop using the medicine. Signs of tardive dyskinesia include fine, worm-like movements of the tongue, or other uncontrolled movements of the mouth, tongue, cheeks, jaw, or arms and legs. Other serious but rare side effects may also occur. Some of these side effects, including severe muscle stiffness, fever, unusual tiredness or weakness, fast heartbeat, difficult breathing, increased sweating, loss of bladder control, and seizures, may be the sign of a condition called neuroleptic malignant syndrome. You and your doctor should discuss the good this medicine will do as well as the risks of taking it.
Although not all of these side effects may occur, if they do occur they may need medical attention.
Stop taking this medicine and get emergency help immediately if any of the following effects occur:
Rare
Convulsions (seizures)
difficulty in breathing
fast heartbeat
high fever
high or low (irregular) blood pressure
increased sweating
loss of bladder control
muscle stiffness (severe)
unusually pale skin
unusual tiredness
Check with your doctor as soon as possible if any of the following side effects occur:
More common
Difficulty in talking or swallowing
inability to move eyes
lip smacking or puckering
loss of balance control
mask-like face
muscle spasms, especially of the neck and back
puffing of cheeks
rapid or worm-like movements of tongue
restlessness or need to keep moving (severe)
shuffling walk
stiffness of arms and legs
trembling and shaking of fingers and hands
twisting movements of body
uncontrolled chewing movements
uncontrolled movements of the arms and legs
Less common
Blurred vision or other eye problems
difficult urination
fainting
skin rash
Rare
Hot, dry skin or lack of sweating
increased blinking or spasms of eyelid
muscle weakness
sore throat and fever
uncontrolled twisting movements of neck, trunk, arms, or legs
unusual bleeding or bruising
unusual facial expressions or body positions
yellow eyes or skin
Symptoms of overdose
Difficulty in breathing (severe)
dizziness (severe)
drowsiness (severe)
muscle trembling, jerking, stiffness, or uncontrolled movements (severe)
small pupils
unusual excitement
unusual tiredness or weakness (severe)
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
decreased sweating
dizziness, lightheadedness, or fainting
drowsiness (mild)
dryness of mouth
increased appetite and weight
increased sensitivity of skin to sunlight (skin rash, itching, redness or other discoloration of skin, or severe sunburn)
Less common
Changes in menstrual period
decreased sexual ability
swelling of breasts (in males and females)
unusual secretion of milk
After you stop taking this medicine your body may need time to adjust, especially if you took this medicine in high doses or for a long time. If you stop taking it too quickly, the following withdrawal effects may occur and should be reported to your doctor:
Dizziness
stomach pain
trembling of fingers and hands
uncontrolled, continuing movements of mouth, tongue, or jaw
Although not all of the side effects listed above have been reported for all thioxanthenes, they have been reported for at least one of them. However, since these medicines are very similar, any of the above side effects may occur with any of them.
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.
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