If you experience dizziness, drowsiness or blurred vision, avoid these activities. Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking belladonna alkaloids and phenobarbital. Avoid becoming overheated in hot weather. Belladonna alkaloids and phenobarbital increases the risk of heat stroke because it decreases sweating.
Phenobarbital is in a class of drugs called barbiturates.
Phenobarbital depresses the activity of your brain and nervous system causing relaxation. This is helpful in controlling conditions such as colitis, spastic bladder, diverticulitis, infant colic, renal and biliary colic, peptic ulcer, irritable bowel syndrome, splenic flexure syndrome, and pancreatitis. Belladonna alkaloids also reduce the secretions of many organs, thereby helping to control conditions such as excessive stomach acid production, excessive secretion from the pancreas, and excessive sweating and drooling associated with diseases like Parkinson's disease. The combination, belladonna alkaloids and phenobarbital, is used to treat irritable bowel syndrome, inflammation of the intestine, and ulcers in the intestine. Belladonna alkaloids and phenobarbital may also be used for purposes other than those listed in this medication guide.