Read the side effects of Acetaminophen, Butalbital and Caffeine as described in the medical literature. In case of any doubt consult your doctor or pharmacist.
Most Common -
Drowsiness, lightheadedness, tremor, dizziness, sedation, shortness of breath, nausea, vomiting, and abdominal pain.
Central Nervous System -
Headache, shaky feeling, tingling, agitation, fainting, fatigue, heavy eyelids, high energy, hot spells, numbness, sluggishness, intoxicated feeling and seizures.
Gastrointestinal -
Difficulty in swallowing, loss of appetite, flatulence, constipation and dry mouth.
Heart -
Fast, pounding, or uneven heartbeat, heartburn.
Musculoskeletal -
Leg pain and muscle weakness.
Genitourinary -
Increased urination, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).
Miscellaneous -
Itching, earache, nasal congestion, ringing in the ear and allergic reactions.
Other Precautions : * Avoid excess dosage.
* Extended and repeated use of this product is not recommended because of the potential for physical dependence.