Phenobarbital is in a group of drugs called barbiturates (bar-BIT-chur-ates). Phenobarbital slows the activity of your brain and nervous system.

Belladonna alkaloids produce many effects in the body, including reduced muscle spasms in the digestive or urinary tract, and reduced fluid secretions from certain glands or organs.

The belladonna alkaloids included in this medication include atropine, hyoscyamine, and scopolamine.

The combination of belladonna alkaloids and phenobarbital is used to treat irritable bowel syndrome and ulcers in the intestine.

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  • Bellatal, D-Tal, Donnatal, Chardonna-2, Hyosophen, Donnapine, Elixiral, Spasmolin, Haponal, Antispas, Barbidonna, Donnatal Extentabs, Antispasmodic, Bellalphen, Donnaphen, Spasquid, Alkabel-SR, Bellatal ER, Servira, PB-Hyos, Quadrapax, Phenohytro
  • Severity: Major
    You should check with your doctor immediately if any of these side effects occur when taking atropine / hyoscyamine / phenobarbital / scopolamine:

    Eye pain
    skin rash or hives
    sore throat and fever
    unusual bleeding or bruising
    yellow eyes or skin
    Severity: Minor
    Some of the side effects that can occur with atropine / hyoscyamine / phenobarbital / scopolamine may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

    More common:
    decreased sweating
    dry mouth, nose, throat, or skin
    Less common or rare:
    Bloated feeling
    blurred vision
    decreased flow of breast milk
    difficult urination
    difficulty in swallowing
    increased sensitivity of eyes to sunlight
    loss of memory
    nausea or vomiting
    unusual tiredness or weakness
  • (oral capsule, oral elixir, oral tablet, extended release, oral tablet, oral liquid)