Diclofenac and Orphenadrine, aspirin, and caffeine interaction
Diclofenac and Orphenadrine, aspirin, and caffeine: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Diclofenac (ZIPSOR) label · effective 2026-03-01
ZIPSOR is contraindicated in the following patients: Known hypersensitivity (e.g., anaphylactic reactions and serious skin reactions) to diclofenac or any components of the drug product [ see Warnings and Precautions ( 5.7 , 5.9 ) ] History of asthma, urticaria, or other allergic-type reactions after taking aspirin or other NSAIDs.
History of asthma, urticaria, or other allergic-type reactions after taking aspirin or other NSAIDs ( 4 )
Exacerbation of Asthma Related to Aspirin Sensitivity : ZIPSOR is contraindicated in patients with aspirin-sensitive asthma.
Exacerbation of Asthma Related to Aspirin Sensitivity A subpopulation of patients with asthma may have aspirin-sensitive asthma which may include chronic rhinosinusitis complicated by nasal polyps; severe, potentially fatal bronchospasm; and/or intolerance to aspirin and other NSAIDs.
Because cross-reactivity between aspirin and other NSAIDs has been reported in such aspirin-sensitive patients, ZIPSOR is contraindicated in patients with this form of aspirin sensitivity [ see Contraindications ( 4 ) ].
From the Orphenadrine, aspirin, and caffeine (Norgesic) label · effective 2026-01-08
Pregnancy Embryo-Fetal Toxicity Inform pregnant women to avoid use of aspirin and other NSAIDs starting at 30 weeks gestation because of the risk of the premature closing of the fetal ductus arteriosus.
Data from observational studies regarding other potential embryofetal risks of NSAID use in women in the first or second trimesters of pregnancy are inconclusive.
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.