Phenobarbital Oral
In Depth
- Uses and How to Use
- Dosage and Storage
- Precautions and Side Effects
- Drug Interactions
- Drug Images
This medication may cause dependence when used for anxiety, especially if it has been used regularly for an extended time and if it has been used in high doses. In such cases, withdrawal reactions (e.g., anxiousness, muscle twitching, shakiness, dizziness, worsening weakness, nausea, vomiting) may occur if you suddenly stop this drug. Withdrawal from phenobarbital can be severe and include seizures and (rarely) death. To prevent withdrawal reactions when stopping extended, high dose, regular use with this drug, gradually reduce the dosage as directed. Consult your doctor or pharmacist for more details, and report any withdrawal reactions immediately.
Though very unlikely, abnormal drug-seeking behavior (addiction) is possible with this medication. To lessen the risk of becoming addicted, do not increase your dose, take it more frequently, or take it for a longer time than prescribed. Properly stop the medication when so directed.
When used for an extended period for anxiety, this medication may not work as well and may require different dosing. Talk with your doctor if this medication stops working well.
Inform your doctor if your condition persists or worsens.
