Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.

The side effects listed below are not experienced by everyone who takes Odomzo (Sonidegib). If you are concerned about side effects, discuss the risks and benefits of Odomzo (Sonidegib) with your doctor.

The following side effects have been reported by at least 1% of people taking Odomzo (Sonidegib). Many of these side effects can be managed, and some may go away on their own over time.

Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

• acid reflux
• changed sense of taste
• Constipation
• decreased appetite
• Diarrhea
• dizziness
• dry eyes
• Dry Mouth
• hair loss
• headache
• heartburn
• nausea
• tiredness
• unusual hair growth
• weight loss
• vomiting

Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

• abdominal pain
• dizziness when rising from a sitting or lying position
• interruption of menstrual periods
• muscle pain, spasms, or weakness
• numbness and tingling in the extremities
• rash
• signs of dehydration (e.g., decreased urine, dry skin, dry and sticky mouth, sleepiness, dizziness, headache, thirst, confusion)
• signs of Depression (e.g., poor concentration, changes in weight, changes in sleep, decreased interest in activities, thoughts of suicide)
• trigger finger (condition where one of your fingers gets stuck in a bent position)

Stop taking the medication and seek immediate medical attention if any of the following occur:

• signs of muscle damage (e.g., unexplained muscle pain, tenderness, or weakness; or brown or discoloured urine)

Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Odomzo (Sonidegib).

Each opaque pink capsule with "Odomzo (Sonidegib) 200MG" printed on the capsule body and "NVR" printed on the cap in black ink, contains 200 mg of Odomzo (Sonidegib). Nonmedicinal ingredients: colloidal silicon dioxide, crospovidone, lactose monohydrate, magnesium stearate, poloxamer, and sodium lauryl sulfate; hard-capsule shell: gelatin, red iron oxide, and titanium dioxide; printing ink: ammonium hydroxide, black iron oxide, propylene glycol, and shellac.

Do not take Odomzo (Sonidegib) if you:

• are allergic to Odomzo (Sonidegib) or any ingredients of the medication
• are pregnant or may become pregnant
• are breast-feeding
• are a woman who could become pregnant and you are unable to comply with birth control measures
• are a man with a partner who could become pregnant and you are unable to comply birth control measures

Do not give Odomzo (Sonidegib) to children or adolescents under the age of 18.

There may be an interaction between Odomzo (Sonidegib) and any of the following:

• Apalutamide
• Aprepitant
• "azole" antifungals (e.g., fluconazole, itraconazole, ketoconazole, Voriconazole)
• Bosentan
• Cobicistat
• conivaptan
• Deferasirox
• Diltiazem
• Dronedarone
• efavirenz
• Enzalutamide
• Estradiol and Norethindrone
• etravirine
• grapefruit juice
• HIV protease inhibitors (atazanavir, darunavir, indinavir, lopinavir, nelfinavir, ritonavir)
• lumacaftor and Ivacaftor
• macrolide antibiotics (e.g., clarithromycin, erythromycin)
• mifepristone
• Mitotane
• Modafinil
• protein kinase inhibitors (e.g., Ceritinib, Crizotinib, Dabrafenib, Idelalisib, imatinib, Nilotinib, Ribociclib)
• rifabutin
• rifampin
• St. John's wort
• Sarilumab
• seizure medications (e.g., Carbamazepine, Eslicarbazepine. Phenobarbital, Phenytoin, primidone)
• Tocilizumab
• Verapamil

If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:

• stop taking one of the medications,
• change one of the medications to another,
• change how you are taking one or both of the medications, or
• leave everything as is.

An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Medications other than those listed above may interact with Odomzo (Sonidegib). Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.

Before you begin using a medication, be sure to inform your doctor of any medical conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use Odomzo (Sonidegib).

Birth control: Odomzo (Sonidegib) appears in the sperm of men taking Odomzo (Sonidegib). To protect your partner, as well as prevent pregnancy, all men who are taking Odomzo (Sonidegib) and have a partner who could become pregnant must use a condom while taking the medication and for 6 months after the last dose.

Women who are taking Odomzo (Sonidegib) must use 2 reliable forms of birth control, beginning at least 4 weeks before starting Odomzo (Sonidegib), while taking Odomzo (Sonidegib), and for 20 months after the last dose. At least one of these methods must be a highly effective method of birth control and one must be a barrier method, such as condom or diaphragm with spermicide.

Your doctor will have you do a pregnancy test monthly starting the week before the first dose of the medication, while you are taking Odomzo (Sonidegib), and for 20 months after the last dose.

Blood donation: Avoid donating blood for at least 20 months after taking the last dose of Odomzo (Sonidegib).

Liver function:  Liver disease or reduced liver function may cause Odomzo (Sonidegib) to build up in the body, causing side effects. If you have liver problems, discuss with your doctor how Odomzo (Sonidegib) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Odomzo (Sonidegib), and whether any special monitoring is needed.

Muscle effects: Muscle damage has been associated with the use of Odomzo (Sonidegib). Report any unexplained muscle pain, tenderness, weakness, or cramps, or any brown or discoloured urine to your doctor immediately, particularly if you are also experiencing malaise (a general feeling of being unwell) or Fever.

Other cancers: There have been reports of squamous cell carcinoma, another form of skin cancer, developing after taking Odomzo (Sonidegib). This type of skin cancer may appear as scaly red patches; open sores; or rough, thickened, or wart-like skin. It may also appear as raised growths on the skin. Report any changes to your skin to your doctor as soon as possible.

Pregnancy: Odomzo (Sonidegib) can cause severe birth defects affecting the baby if the mother takes Odomzo (Sonidegib) during pregnancy. Two forms of effective birth control must be used while taking Odomzo (Sonidegib) and for 20 months after the last dose. If you become pregnant while taking Odomzo (Sonidegib), contact your doctor immediately.

Breast-feeding: It is not known if Odomzo (Sonidegib) passes into breast milk. If you are breast-feeding and are taking Odomzo (Sonidegib), it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of using Odomzo (Sonidegib) have not been established for children.

Seniors: It is likely that people over the age of 65 will experience more side effects and more severe side effects.