Thioridazine Oral : Uses, Side Effects, Interactions



Thioridazine is used to treat certain mental / mood disorders (e.g., schizophrenia). This medicine helps you to think more clearly, feel less nervous and participate in everyday life. It can help people to harm themselves and reduce aggression and stop the desire to hurt others. This can help to reduce your negative thoughts and hallucinations. Thioridazine is related to a class of medicines known as phenothiazines.

How to use Thioridazine HCL

Take Thioridazine from mouth or without food, usually 2-4 times a day or your doctor’s direction.

Dosage is based on your medical condition and medical reaction. Once your condition improves and you are better for a while, then your doctor can work with you to reduce your regular dose. It can be over time. Prevent your medication or reduce your dose without first talking to your doctor. Some conditions may get worse when the medicine is stopped suddenly. Your dosage may need to be gradually reduced.

Use Thioridazine regularly so that it can get the most benefit. To help you remember, use each day at the same time.

Inform your doctor if your condition persists or worsens.

Side Effects

Dizziness, laziness, drowsiness, difficulty in urinating, constipation, restlessness, headache and blurred vision can occur. If any of these effects persists or worsens, immediately inform your doctor or pharmacist.

Danger and dizziness can increase the risk of falling. Slowly rise while sitting or lying down from the position of lying

Remember that your doctor has prescribed Thioridazine because he or she has decided that your benefit is higher than the risk of side effects. Many people using this drug do not have serious side effects.

Tell your doctor if there is any serious side effect of these: shakiness, expression of the face like a mask, movements while walking.

Thioridazine is rarely known as tardive dyskinesia. In some cases this situation can be permanent. Tell your doctor immediately if you develop any unusual / uncontrolled movements (especially the face, lips, tongue, arms or legs).

In rare cases, the thioridazine can increase the level of certain chemicals created by your body (prolactin). For women, this increase in prolactin may have difficulty in getting unsolicited breast milk, missed / paused period or pregnant. For men, it may be due to lack of sexual capacity, inability to produce sperm, or increased breast. If you develop any of these symptoms, then tell your doctor immediately.

Tell your doctor immediately if any of these rare but very serious side effects are: Signs of infection (such as fever, constant sore throat), change in vision (e.g, loss of vision, difficulty in seeing suddenly at night, brown- Yellowness).

If you have any of these rare but very serious side effects, seek immediate medical attention: severe dizziness, unconsciousness, slow pace, tour

Thioridazine can rarely cause a very serious condition, which is called  neuroleptic malignant syndrome (NMS). Get medical help if you have any of the following symptoms: fever, muscle stiffness / pain / tenderness / weakness, severe fatigue, severe confusion, sweating, fast / irregular heartbeat, deep urine, symptoms of kidney problems (e.g That change) amounts of urination).

There is no possibility of very serious allergic reaction to this drug. If this happens, then seek immediate medical attention. Symptoms of a serious allergic reaction can include: Rashes, itching / swelling (especially the face / tongue / throat), severe dizziness, trouble breathing.

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

In the US – Call your doctor for medical advice about side effects. You can notify the FDA of side effects on 1-800-FDA-1088 or

In Canada – Call your doctor for medical advice about side effects. You can report the health effects of Canada on 1-866-234-2345.


Before taking thioridazine, tell your doctor or pharmacist whether you are allergic to it; Or other phenothiazines (e.g., chlorpromazine); Or if you have any other allergens. This product may contain passive elements, which may cause allergic or other problems. Talk to your pharmacist for more details.

If you have some medical condition then this drug should not be used. Before using this drug, consult your doctor or pharmacist if you have: a definite severe nervous system problem (severe CNS depression), severe blood pressure problems.

Before using Thioridazine, tell your doctor or pharmacist your medical history, in particular: some blood-related problems (e.g., low white blood cell count), Parkinson’s disease, history of tourism, removal of drugs from the body Required low enzyme (slow hydroxylator)

Thioridazine can cause a condition that affects the rhythm of the heart (Qt prolonged). Prolonged QT can rarely cause serious (rarely fatal) fast / irregular heartbeat and other symptoms (such as severe dizziness, unconsciousness) that require immediate medical attention.

If you have some medical conditions or QT prolonged other medications are taking Qt can increase the risk of prolonging. Before using Thioridazine, tell your doctor or the pharmacist of all medicines you take, and if you have any of the following conditions: Some heart problems (heart failure, slow heart beat, QT in EKG) Prolonged), family history of some heart problems (longevity in Qt EKG, sudden cardiac death).

Lower levels of potassium or magnesium in the blood can also increase the risk of QT being long. This risk can increase if you use certain medications (such as diuretic / “water tablets”) or if you have conditions like severe sweating, diarrhea or vomiting. Talk to your doctor about using Thioridazine safely.

Thioridazine may make you dizzy or drowsy. Alcohol or marijuana can make you more dizzy or deaf. Unless you can safely do this, do not drive, use machinery, or do anything that requires caution. Limit alcoholic beverages If you are using marijuana, talk to your doctor.

Before surgery, tell your doctor or dentist that you are taking this medicine.

Thioridazine can make you more sensitive to the sun. Keep your time limited in the sun. Avoid Tanning Booths and Sunnamps. Use sunscreen on the outside and wear protective clothes. Tell your doctor immediately if you burn in the sun or have blisters / redness on the skin.

Older adults may be more susceptible to the side effects of this drug, especially due to dizziness, lighthouse, drowsiness, confusion, constipation, difficulty in urinating, and prolong QT (see above). Danger, dizziness, drowsiness, and confusion can increase the risk of falling.

During pregnancy, Thioridazine should be used only when explicitly necessary. Mothers who have used this medicine during the last 3 months of pregnancy, rarely can develop symptoms including muscle stiffness or stiffness, drowsiness, feeding / difficulty breathing, or constant crying. If you see any of these symptoms in your newborn especially in their first month, then tell the doctor immediately.

Since untreated mental / mood problems (such as schizophrenia, depression) can be a serious condition, do not stop taking this medicine until it is directed by your doctor. If you are planning a pregnancy, then become pregnant, or think that you may be pregnant, discuss the benefits and risks of using this drug during pregnancy immediately with your doctor.

It is not known whether this medicine passes in breast milk or not. Consult your doctor before breastfeeding.


Drug interactions can change how your medicines 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 prescriptions / non-prescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop or change any drug supplements without the approval of your doctor.

Some products that can interact with this drug include: anticholinergic drugs (e.g., Belladonna alkaloids, Atropine, scopolamine), cabergoline, cisapride, duloxetine, guanethidine, guanadrel, lithium, mirabegron, medications for Parkinson’s disease (e.g., levodopa, benztropine), pergolide, pindolol, propranolol, rolapitant, terbinafine, certain SSRI antidepressants (e.g., fluoxetine, fluvoxamine, paroxetine).

In addition to the thioridazine, many medicines can affect cardiac rhythm (Qt protein), including amiodarone, dofetilide, pimozide, procainamide, quinidine, sotalol, macrolide antibiotics (e.g erythromycin). Therefore, before using thioridazine, report all the medicines that you are currently using for your doctor or pharmacist.

Tell your doctor or pharmacist whether you are taking other products, such as opiate pain or cough relief substances (such as codeine, hydrocodone), alcohol, marijuana, sleep or anxiety medications (e.g,  alprazolam, lorazepam, zolpidem) Due to relaxing muscles, drowsiness causes. (Such as carisoprodol,  cyclobenzaprine), or antihistamines (such as  cetirizine, diphenhydramine).

Check the label on all your drugs (like allergy or cough-and-cold products), because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.


If someone is treated and has serious symptoms such as difficulty in getting out or breathing, call 911. Otherwise, call the Poison Control Center immediately. American residents can call their local venom control center at 1-800-222-1222. Canadians can call a provincial poison control center.


Do not share this medication with others.

Laboratory and / or medical tests (e.g, eye screening, potassium level, EKG) can be done periodically to monitor your progress or to examine side effects. Consult your doctor for more details.

Missed Dose

If you miss a dose, then as soon as you remember it, take it. If it is near the next dose time, then leave the thesis dose and determine your normal dose Do not double the dose to catch.


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

Until instructed to do so, do not flush the medicines under the toilet or drain them in the drain. When this period expires or is not required, leave this product appropriately. Consult your drug dealer or local waste disposal company to get more information about safely terminating your product.

Disclaimer: DrLinex has made every effort to ensure that all information is factually accurate, comprehensive and up-to-date. However, this article should not be used as a licensed health care professional’s choice of knowledge and expertise. You should always consult your doctor or other health care professional before taking any medication. The information given here is subject to change and it has not been used to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions or adverse effects. The lack of warning or other information for any drug does not indicate that the combination of medicine or medication is safe, effective or appropriate for all patients or all specific uses.

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