fiorinal dosage and side effects
Common Fiorinal side effects include: 1  drowsiness, dizziness; 2  nausea, gas, upset stomach, stomach pain; or. 3  sleep problems (insomnia).
Indications for FIORINAL: Tension (or muscle contraction) headache. Adult: Use lowest effective dose for shortest duration. 1â2 caps every 4hrs, as needed; max 6 caps/day. Also with Codeine: concomitant use or discontinuation of CYP2D6 inhibitors, CYP3A4 inhibitors or inducers: monitor closely and consider dose adjustments (see full labeling). Withdraw gradually by 25â50% every 2â4 days.