Description and Brand Names

Drug information provided by: Merative, Micromedex®

US Brand Name

1. Navane

Descriptions

Thiothixene is used to treat a mental condition called schizophrenia. This medicine should not be used to treat behavioral problems in older adult patients who have dementia.

This medicine is available only with your doctor's prescription.

This product is available in the following dosage forms:

• Capsule

Before Using

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

The use of thiothixene in children younger than 12 years of age is not recommended.

Geriatric

No information is available on the relationship of age to the effects of thiothixene in geriatric patients. However, this medicine should not be used for behavioral problems in older adults with dementia.

Breastfeeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

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.

• Bromopride
• Metoclopramide
• Potassium Citrate

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.

• Amantadine
• Apomorphine
• Buprenorphine
• Bupropion
• Clozapine
• Codeine
• Dihydrocodeine
• Glucagon
• Glycopyrrolate
• Glycopyrronium Tosylate
• LetibotulinumtoxinA-wlbg
• Lithium
• Methacholine
• Methadone
• Oliceridine
• Oxycodone
• Quetiapine
• Revefenacin
• Scopolamine
• Secretin Human
• Sufentanil
• Tapentadol
• Tiotropium
• Tramadol
• Zotepine

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.

• Betel Nut

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

• Blood or bone marrow problems (e.g., agranulocytosis, leukopenia, neutropenia) or
• Central nervous system depression (severe drowsiness or loss of consciousness) or
• Circulatory collapse (shock-like state)—Should not be used in patients with these conditions.

• Breast cancer, prolactin-dependent or
• Eye or vision problems (e.g., pigmentary retinopathy, lenticular pigmentation) or
• Heart or blood vessel disease or
• Hyperprolactinemia (high prolactin in the blood) or
• Liver disease or
• Neuroleptic malignant syndrome (NMS), history of or
• Seizures, history of—Use with caution. May make these conditions worse.

Proper Use

Take this medicine exactly as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. To do so may increase the chance of side effects.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

• For oral dosage form (capsules):
  • For schizophrenia:
    • Adults and teenagers 12 years of age and older—At first, 2 milligrams (mg) three times per day or 5 mg two times per day. Your doctor may increase your dose as needed. However, the dose is usually not more than 60 mg per day.
    • Children younger than 12 years of age—Use is not recommended.

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Precautions

It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects. You may also need to have your eyes tested on a regular basis while you are using this medicine.

This medicine may cause tardive dyskinesia (a movement disorder). Check with your doctor right away if you have any of the following symptoms while using this medicine: lip smacking or puckering, puffing of the cheeks, rapid or worm-like movements of the tongue, uncontrolled chewing movements, or uncontrolled movements of the arms and legs.

Stop using this medicine and check with your doctor right away if you have any of the following symptoms while using this medicine: convulsions (seizures), difficulty with breathing, a fast heartbeat, a high fever, high or low blood pressure, increased sweating, loss of bladder control, severe muscle stiffness, unusually pale skin, or tiredness. These could be symptoms of a serious condition called neuroleptic malignant syndrome (NMS).

Thiothixine can temporarily lower the number of white blood cells in your blood, increasing the chance of getting an infection. If you can, avoid people with infections. Check with your doctor right away if you think you are getting an infection, or if you have a fever or chills, a cough or hoarseness, lower back or side pain, or painful or difficult urination.

This medicine may cause dizziness, trouble with thinking, or trouble with controlling body movements. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that requires you to be alert, well-coordinated, or able to think well.

This medicine will add to the effects of alcohol and other CNS depressants (medicines that make you drowsy or less alert). Some examples of CNS depressants are antihistamines or medicine for allergies or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicines, including narcotics; medicine for seizures (e.g., barbiturates); muscle relaxants; or anesthetics, including some dental anesthetics. Check with your doctor before taking any of the above while you are using this medicine.

You might get overheated more easily while using this medicine. Be aware of this if you are exercising or the weather is hot. Drinking water might help. If you get too hot and feel dizzy, weak, tired, confused, or sick to your stomach, try to cool down. Call your doctor if you are not able to cool your body and your symptoms continue.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

Side Effects

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:

Rare

1. Cough
2. difficulty with swallowing
3. dizziness
4. fast heartbeat
5. hives
6. itching
7. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
8. shortness of breath
9. skin rash
10. tightness in the chest
11. unusual tiredness or weakness
12. wheezing

Incidence not known

1. Abdominal or stomach pain
2. back, leg, or stomach pains
3. bleeding gums
4. bloating or swelling of the face, arms, hands, lower legs, or feet
5. blood in the urine or stools
6. bloody, black, or tarry stools
7. blurred vision
8. chest pain
9. chills
10. clay-colored stools
11. confusion
12. convulsions
13. cough or hoarseness
14. dark urine
15. difficulty with breathing
16. dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
17. fainting
18. fast, pounding, or irregular heartbeat or pulse
19. fever
20. fever with or without chills
21. general body swelling
22. general feeling of tiredness or weakness
23. headache
24. high fever
25. high or low blood pressure
26. inability to move the eyes
27. inability to sit still
28. increased blinking or spasms of the eyelid
29. increased sweating
30. lightheadedness
31. lip smacking or puckering
32. loss of appetite
33. loss of balance control
34. loss of bladder control
35. lower back or side pain
36. mask-like face
37. nausea or vomiting
38. need to keep moving
39. nosebleeds
40. overactive reflexes
41. painful or difficult urination
42. pale skin
43. pinpoint red spots on the skin
44. puffing of the cheeks
45. rapid or worm-like movements of the tongue
46. rapid weight gain
47. restlessness
48. seizures
49. severe muscle stiffness
50. shuffling walk
51. slowed movements
52. slurred speech
53. sore throat
54. sores, ulcers, or white spots on the lips or in the mouth
55. sticking out of the tongue
56. sweating
57. swollen glands
58. tic-like (jerky) movements of the head, face, mouth, and neck
59. tingling of the hands or feet
60. tiredness
61. trembling and shaking of the fingers and hands
62. trouble with breathing, speaking, or swallowing
63. uncontrolled chewing movements
64. uncontrolled movements of the arms and legs
65. uncontrolled twisting movements of the neck, trunk, arms, or legs
66. unexplained bleeding or bruising
67. unpleasant breath odor
68. unusual bleeding or bruising
69. unusual facial expressions
70. unusual weight gain or loss
71. unusually pale skin
72. vomiting of blood
73. yellowing of the eyes or skin

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose

1. Change in consciousness
2. depression
3. drowsiness
4. loss of consciousness
5. sudden jerky movements of the body

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

1. Absent, missed, or irregular menstrual periods
2. anxiety
3. constipation
4. decreased interest in sexual intercourse
5. diarrhea
6. dry mouth
7. extreme thirst
8. hives or welts
9. hyperventilation
10. inability to have or keep an erection
11. increased appetite
12. increased sensitivity of the skin to sunlight
13. increased sweating
14. increased thirst
15. increased weight
16. irritability
17. loss in sexual ability, desire, drive, or performance
18. menstrual changes
19. nervousness
20. redness or other discoloration of the skin
21. severe sunburn
22. sleeplessness
23. stopping of menstrual bleeding
24. stuffy nose
25. swelling of the breasts or unusual milk production
26. trouble with sleeping
27. unable to sleep
28. watering of mouth

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.

Portions of this document last updated: April 01, 2024

Original article: https://www.mayoclinic.org/drugs-supplements/thiothixene-oral-route/side-effects/drg-20073315