©The Author(s) 2016.
World J Dermatol. Feb 2, 2016; 5(1): 17-51
Published online Feb 2, 2016. doi: 10.5314/wjd.v5.i1.17
Published online Feb 2, 2016. doi: 10.5314/wjd.v5.i1.17
Table 3 Methotrexate drug interactions of significance
| Interacting drug | Mechanism/comments |
| Drugs that increase methotrexate drug levels and toxicity | |
| Salicylates | Decrease renal excretion, displacement from plasma proteins |
| NSAIDs | Decrease renal excretion, displacement from plasma proteins |
| Sulfonamides | Decrease renal excretion, displacement from plasma proteins |
| Dipyridamole | Increased intracellular accumulation of methotrexate |
| Probenecid | Increased intracellular accumulation of methotrexate, decreased renal tubular function |
| Chloramphenicol | Displacement from plasma proteins |
| Phenothiazines | Displacement from plasma proteins |
| Phenytoin | Displacement from plasma proteins |
| Tetracyclines | Displacement from plasma proteins |
| Drugs that simultaneously inhibit folate metabolic pathway-increase hematologic toxicity | |
| Trimethoprim | Inhibition of dihyrofolate reductase |
| Sulfonamides | Inhibition of dihydropteroate synthetase |
| Dapsone | Inhibition of dihydropteroate synthetase |
| Drugs that may synergistically increase hepatotoxicity-common target organ | |
| Systemic retinoids | Common target organ for toxicity-liver |
| Alcohol | Common target organ for toxicity-liver |
- Citation: Mahajan VK. Psoriasis treatment: Unconventional and non-standard modalities in the era of biologics. World J Dermatol 2016; 5(1): 17-51
- URL: https://www.wjgnet.com/2218-6190/full/v5/i1/17.htm
- DOI: https://dx.doi.org/10.5314/wjd.v5.i1.17