1. Singh YP, Aggarwal A, Misra R, Agarwal V (2006) Low-dose methotrexate-induced pancytopenia. Clin Rheumatol (in press). DOI 10.1007/s10067-006-0301-7
2. Williams WM, Chen TS, Huang KC (1984) Effect of penicillin on the renal tubular secretion of methotrexate in the monkey. Cancer Res 44:1913–1917
3. Bloom EJ, Ignoffo RJ, Reis CA, Cadman E (1986) Delayed clearance of methotrexate associated with antibiotics and anti inflammatory agents. Clin Res 34:560A
4. Ronchera CL, Hernandez T, Peris JE et al (1993) Pharmacokinetic interaction between high dose methotrexate and amoxycillin. Ther Drug Monit 15:375–379
5. Mayall B, Poggi G, Parkin JD (1991) Neutropenia due to low dose methotrexate therapy for psoriasis and rheumatoid arthritis may be fatal. Med J Aust 155:480–484