Despite the fact that the systemic absorption of indomethacin in local application in the form of eye drops is insignificant, the risk of drug interaction with other medicinal products can not be completely ruled out.
Indirect anticoagulants, other NSAIDs, diflunizal, heparin.
It is known that the use of indomethacin in other dosage forms simultaneously with indirect anticoagulants, other non-steroidal anti-inflammatory drugs in their daily dose of 3 grams and above (including salicylic acid derivatives, for example, acetylsalicylic acid, etc.), and diflunizalom heparin increases the risk of gastrointestinal tract ulceration and bleeding, and in combination with diflunizalom until fatal.
In turn, diflunizal can increase the concentration of indomethacin in the blood plasma.
Lithium preparations. Indomethacin can increase the concentration of lithium in the blood to toxic values, due to a decrease in the excretion of lithium by the kidneys.
Methotrexate (at a dose of 15 mg per week or more). Due to a decrease in excretion of methotrexate by the kidneys while taking indomethacin and / or other anti-inflammatory drugs, its hematotoxic effect is increased. Carefully indomethacin apply with methotrexate (in a dose less than 15 mg / week) - weekly blood test in the first weeks combined administration, as well as monitoring of renal dysfunction, especially in the elderly.
Ticlopidine. Indomethacin increases the antiplatelet action of ticlopidine and increases the risk of bleeding.
Indomethacin when combined with beta-blockers can weaken their effect.
Indomethacin may increase nephrotoxicity cyclosporine, especially in elderly patients.
NSAIDs can lead to an increased antidiuretic effect desmopressin.
Use caution when using indomethacin with diuretics and with ACE inhibitors, since patients with dehydration have a risk of acute renal failure (due to a decrease in glomerular filtration by inhibiting vasodilating prostaglandins after NSAID administration) and a decrease in antihypertensive effect.
In such situations, it is necessary to provide the patient with water and monitor the kidney function at the beginning of the treatment.
Combined use with pentoxifylline - increased risk of bleeding from the digestive tract (application under medical supervision and monitoring the duration of bleeding).
Drugs that affect the gastrointestinal mucosa (salts, oxides and hydroxides of magnesium, aluminum and calcium) reduce absorption of indomethacin from the gastrointestinal tract; recommend a separate reception with antacids (if possible, an interval of more than 2 hours).
NSAIDs, including indomethacin, can lead to an increase in the toxic effect zidovudine on reticulocytes with transition to acute anemia in 8 days after initiation of therapy with NSAIDs.
Combined use with thrombolytics - an increased risk of bleeding.
There is a suggestion that with the use of indomethacin, a risk of rupture of the implantable intrauterine device is possible.
With the simultaneous use of Indocollir with other eye drops, including those containing corticosteroids, to exclude the effect of "washing out" (reducing the concentration), the drugs should be injected with an interval of at least 15 minutes.