Sulfasalazine Cimetidine

Simultaneous administration of sucralfates with other nonantacid medication should be given after an interval of at least 2 hours. Sucralfates interact with rantidine, cimetidine, digoxin, quinidine, theophylline, and warfarin. Sulfasalazine should be administered with caution with antibacterials and antineoplastics.179... 

Figure 6.17 The classification of 42 drugs in the (solubility-dose ratio, apparent permeability) plane of the QBCS. The intersection of the dashed lines drawn at the cutoff points form the region of the borderline drugs. Key 1 acetyl salicylic acid 2 atenolol 3 caffeine 4 carbamazepine 5 chlorpheniramine 6 chlorothiazide 7 cimetidine 8 clonidine 9 corticosterone 10 desipramine 11 dexamethasone 12 diazepam 13 digoxin 14 diltiazem 15 disopyramide 16 furosemide 17 gancidovir 18 glycine 19 grizeofulvin 20 hydrochlorothiazide 21 hydrocortisone 22 ibuprofen 23 indomethacine 24 ketoprofen 25 mannitol 26 metoprolol 27 naproxen 28 panadiplon 29 phenytoin 30 piroxicam 31 propanolol 32 quinidine 33 ranitidine 34 salicylic acid 35 saquinavir 36 scopolamine 37 sulfasalazine 38 sulpiride 39 testosterone 40 theophylline 41 verapamil HC1 42 zidovudine.

Eradiri O, Jamali F, Thomson ABR. Interacticn of metronidazole with i enobarbital, cimetidine, prednisoie, and sulfasalazine in Qohn s disease Biopharm Drug Dispos (1988) 9,219-27. 

In a study, 5 patients with rheumatoid arthritis were given sulfasalazine alone, and another 9 patients were given cimetidine 400 mg three times daily for 18 weeks as well as their usual sulfasalazine. On comparing the two groups, it was found that cimetidine did not affect the plasma or urinary levels of sulfasalazine and there were no changes in blood cell counts... 

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