I have a tooth infection and was precribed azithromycin. Can I take them together.
12 Dec 2010
Interactions between your selected drugs
No results found - however, this does not necessarily mean no interactions exist. ALWAYS consult with your doctor or pharmacist.
Other drugs that your selected drugs interact with
azithromycin interacts with more than 100 other drugs.
methotrexate interacts with more than 300 other drugs.
Interactions between your selected drugs and food
methotrexate ↔ food
Applies to: methotrexate
MONITOR: Limited data suggest that consumption of greater than 180 mg/day of caffeine may interfere with the efficacy of methotrexate (MTX) in patients with rheumatoid arthritis. The exact mechanism of interaction is unknown but may be related to the antagonistic effect of caffeine on adenosine receptors, as anti-inflammatory properties of MTX is thought to result from the accumulation of adenosine. In a study of 39 patients treated with MTX 7.5 mg/week (without folate supplementation) for 3 months, patients with high caffeine intake (more than 180 mg/day) experienced significantly less improvement in morning stiffness and joint pain from baseline than patients with low caffeine intake (more than 120 mg/day). There were no significant differences between the responses of patients with moderate caffeine intake (120 to 180 mg/day) and those of the other 2 groups. In an interview of 91 patients treated with MTX, 26% of patients who discontinued the drug were regular coffee drinkers compared to only 2% of those still receiving the drug. Because treatment failure was the reason for MTX discontinuation in 80% of patients who discontinued, the investigators suggested that caffeine may have interfered with MTX efficacy.
MANAGEMENT: Until further information is available, the potential for interaction should be considered in patients who consume substantial amounts of caffeine and caffeine-containing foods and are prescribed methotrexate for rheumatoid arthritis. It may be appropriate to limit caffeine intake if an interaction is suspected in cases of treatment failure.
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