Botox

See also Uses section.

This medication can spread to other parts of the body after your injection, causing serious (possibly fatal) side effects. These can occur hours or even weeks after the injection. However, the chances of such serious side effects occurring when this medication is used for migraines or skin conditions such as wrinkles, eye spasm, or excessive sweating are extremely unlikely.

Children being treated for muscle stiffness/spasms have the greatest risk of these effects, as well as anyone that has certain medical conditions (see Precautions section). Discuss the risks and benefits of this medication with your doctor.

Get medical help right away if any of these very serious side effects occur: chest pain, difficulty breathing, excessive muscle weakness, irregular heartbeat, severe difficulty swallowing or speaking, loss of bladder control.

See also Warning section.

Because this medication is given at the site of your condition, most of the side effects occur close to where the medication is injected. Redness, bruising, infection, and pain at the injection site may occur.

Dizziness, mild difficulty swallowing, respiratory infections such as cold or flu, pain, nausea, headache, and muscle weakness may occur when this medication is used to relax muscles. Double vision, drooping or swollen eyelid, eye irritation, dry eyes, tearing, reduced blinking, and increased sensitivity to light may also occur.

If any of these effects last or get worse, notify your doctor or pharmacist promptly. You may require protective eye drops/ointments, an eye patch, or other treatment.

When this medication is used to prevent migraines, side effects such as headache, neck pain, and drooping eyelid may occur.

When this medication is used for excessive sweating, side effects such as non-underarm sweating, respiratory infections such as cold or flu, headache, fever, neck or back pain, and anxiety may occur.

When this medication is used for overactive bladder, side effects such as urinary tract infections, burning/painful urination, fever, or difficulty urinating may occur.

If any of these effects last or get worse, notify your doctor or pharmacist promptly.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: itching/swelling (especially of the face/tongue/throat), rash, severe dizziness, trouble breathing.

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

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/safety/medwatch-fda-safety-information-and-adverse-event-reporting-program.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Drug interactions may change how your medications 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 prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Some products that may interact with this drug include: certain antibiotics (including aminoglycosides such as gentamicin, polymyxin), anticoagulants (such as warfarin), Alzheimer's disease drugs (such as galantamine, rivastigmine, tacrine), myasthenia gravis drugs (such as ambenonium, pyridostigmine), quinidine.

It is important to understand the risks and benefits of this therapy. Discuss any questions or concerns with your health care professional.

Not applicable.

Not applicable. This medication is given in a hospital or clinic and will not be stored at home.

Read the Medication Guide and, if available, the Patient Information Leaflet provided by your pharmacist before you start using this medication and each time you get an injection. If you have any questions, ask your doctor or pharmacist.

This medication is given by injection by an experienced health care professional. It is injected into the affected muscles when treating eye disorders, muscle stiffness/spasms, platysma bands, and wrinkles. When used to prevent migraines, it is injected into the muscles of the head and neck. It is injected into the skin for the treatment of excessive sweating. For the treatment of drooling/excess saliva, this medication is injected into the salivary glands. When treating overactive bladder, it is injected into the bladder.

The dosage, the number of injections, the site of injections, and how often you receive the medication will be determined by your condition and your response to treatment. Children's dosage is also based on weight. Most people start to see an effect within a few days to 2 weeks, and the effect usually lasts 3 to 6 months.

If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call 1-800-222-1222. Canada residents can call 1-844-764-7669. An antitoxin is available but must be used before symptoms of overdose become apparent. Symptoms of overdose may be delayed, and may include serious muscle weakness, breathing problems and paralysis.