Aspirin: Side Effects, Uses & Monitoring
Butalbital, Aspirin, Caffeine, and Codeine Phosphate Capsules, USP is indicated for the relief of the symptom complex of tension (or muscle contraction) headache.
- Data source
- FDA labeling via NIH DailyMed (label 787cda7d…)
- Label version
- current
- Last reviewed
- 2026
Reported adverse reactions
Reactions listed in current FDA labeling, with the highest frequency reported across summarized placebo-controlled trials.
No structured frequency data available in current labeling. Consult the official label.
Labeled uses (from FDA prescribing information)
Butalbital, Aspirin, Caffeine, and Codeine Phosphate Capsules, USP is indicated for the relief of the symptom complex of tension (or muscle contraction) headache. Evidence supporting the efficacy of butalbital, aspirin, caffeine, and codeine phosphate capsules is derived from 2 multi-clinic trials that compared patients with tension headache randomly assigned to 4 parallel treatments: butalbital, aspirin, caffeine, and codeine phosphate capsules; codeine; Butalbital, Aspirin, and Caffeine Capsules, USP; and placebo. Response was assessed over the course of the first 4 hours of each of 2 distinct headaches, separated by at least 24 hours. Butalbital, aspirin, caffeine, and codeine phosphate capsules proved statistically significantly superior to each of its components (Butalbital, Aspirin, and Caffeine Capsules, USP and codeine) and to placebo on measures of pain relief. Evidence supporting the efficacy and safety of Butalbital, Aspirin, Caffeine, and Codeine Phosphate Capsules, USP in the treatment of multiple recurrent headaches is unavailable. Caution in this regard is required because codeine and butalbital are habit-forming and potentially abusable.
Conditions associated with Aspirin in labeling
Frequently Asked Questions
What is Aspirin used for?
FDA labeling lists the approved uses shown above under "Labeled uses." This summary is informational; only a qualified prescriber can determine whether a medication is appropriate for you.
What are the most commonly reported side effects of Aspirin?
Current labeling for this ingredient does not include a structured frequency table that we can reproduce. Review the official label linked below.
Does Aspirin require lab monitoring?
Monitoring needs vary. Ask your healthcare provider whether any lab tests apply while taking Aspirin.
Where does this information come from?
All clinical facts on this page were extracted from the current FDA-registered product labeling for this ingredient, published by manufacturers through NIH DailyMed. See the source link below.
Medical disclaimer: Educational content extracted from public FDA labeling. Not medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.