Applies to carbinoxamine: oral solution, oral suspension extended release, oral tablet.

Serious side effects of Carbinoxamine

Along with its needed effects, carbinoxamine 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 while taking carbinoxamine:

Incidence not known

• Blurred vision
• chills
• confusion
• cough
• decrease in the frequency of urination
• decrease in urine volume
• difficult or painful urination
• difficulty in passing urine (dribbling)
• difficulty with swallowing
• dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
• fast, irregular, pounding, or racing heartbeat or pulse
• hives or welts, itching, skin rash
• puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
• redness of the skin
• sweating
• tightness in the chest
• unusual tiredness or weakness

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

Symptoms of overdose

• Agitation
• anxiety
• bloating
• diarrhea
• difficulty with sleeping
• disorientation
• dizziness
• drowsiness to profound coma
• dry mouth
• feeling of warmth
• fixed and enlarged pupils
• gas
• headache
• lethargy
• lightheadedness
• loss of appetite
• nausea
• redness of the face, neck, arms, and occasionally, upper chest
• seeing, hearing, or feeling things that are not there
• seizures
• tightness of the chest
• trouble breathing
• vomiting

Other side effects of Carbinoxamine

Some side effects of carbinoxamine 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

• Clumsiness or unsteadiness
• cough producing mucus
• drowsiness
• sleepiness

Incidence not known

• Back, leg, or stomach pains
• black, tarry stools
• bleeding gums
• blood in the urine or stools
• blurred vision
• burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
• chills
• confusion
• continuing ringing or buzzing or other unexplained noise in the ears
• cough or hoarseness
• dark urine
• difficulty breathing
• difficulty having a bowel movement (stool)
• dizziness or lightheadedness
• double vision
• dry mouth, nose, and throat
• feeling excited
• feeling of constant movement of self or surroundings
• fever with or without chills
• general body swelling
• general feeling of tiredness or weakness
• headache
• hearing loss
• increased sensitivity of the skin to sunlight
• itching
• loss of appetite
• lower back or side pain
• nosebleeds
• pale skin
• pinpoint red spots on the skin
• redness or other discoloration of the skin
• restlessness
• seeing double
• seizures
• sensation of spinning
• severe sunburn
• shakiness in the legs, arms, hands, or feet
• sore throat
• sores, ulcers, or white spots on the lips or in the mouth
• trembling or shaking of the hands or feet
• trouble sleeping
• unusual bleeding or bruising
• weight loss
• yellowing of the eyes or skin

For Healthcare Professionals

Applies to carbinoxamine: oral capsule extended release, oral liquid, oral suspension, oral suspension extended release, oral tablet, oral tablet extended release.

Nervous system

Nervous system side effects have included sedation, dizziness, headache, and nervousness.^[Ref]

Ocular

Ocular side effects have included diplopia.^[Ref]

Gastrointestinal

Gastrointestinal side effects have included vomiting, diarrhea, dry mouth, nausea, heartburn, and anorexia.^[Ref]

Other

Other side effects have included weakness.^[Ref]

Genitourinary

Genitourinary side effects have included polyuria.^[Ref]