Barbiturate (Oral Route, Parenteral Route, Rectal Route)

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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:

• Bleeding sores on lips
• Chest pain
• Fever
• Muscle or joint pain
• Red, thickened, or scaly skin
• Skin rash or hives
• Sores, ulcers, or white spots in mouth (painful)
• Sore throat and/or fever
• Swelling of eyelids, face, or lips
• Wheezing or tightness in chest

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

• Confusion
• Mental depression
• Unusual excitement

• Hallucinations (seeing, hearing, or feeling things that are not there)
• Unusual bleeding or bruising
• Unusual tiredness or weakness

• Bone pain, tenderness, or aching
• Loss of appetite
• Muscle weakness
• Weight loss (unusual)
• Yellow eyes or skin

• Confusion (severe)
• Decrease in or loss of reflexes
• Drowsiness (severe)
• Fever
• Irritability (continuing)
• Low body temperature
• Poor judgment
• Shortness of breath or slow or troubled breathing
• Slow heartbeat
• Slurred speech
• Staggering
• Trouble in sleeping
• Unusual movements of the eyes
• Weakness (severe)

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:

• Clumsiness or unsteadiness
• Dizziness or lightheadedness
• Drowsiness
• "hangover" effect

• Anxiety or nervousness
• Constipation
• Feeling faint
• Headache
• Irritability
• Nausea or vomiting
• Nightmares or trouble in sleeping

Confusion, mental depression, and unusual excitement may be more likely to occur in very ill patients.

After you stop using this medicine, your body may need time to adjust. If you took this medicine in high doses or for a long time, this may take up to about 15 days. During this period of time check with your doctor if any of the following side effects occur (usually occur within 8 to 16 hours after medicine is stopped):

• Anxiety or restlessness
• Convulsions (seizures)
• Dizziness or lightheadedness
• Feeling faint
• Hallucinations (seeing, hearing, or feeling things that are not there)
• Muscle twitching
• Nausea or vomiting
• Trembling of hands
• Trouble in sleeping, increased dreaming, or nightmares
• Vision problems
• Weakness

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.

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