Sulfamethoxypyridazine is supplied as 500mg tablets.
References
^Boger WP, Gylfe JM, Strickland CS (November 1956). "Sulfamethoxypyridazine (Kynex), a new long-acting sulfonamide". Antibiotic Medicine & Clinical Therapy. 3 (6). New York, NY: 378–87. PMID13363378.
^Vilanova X, De Moragas JM (October 1959). "[Treatment of dermatitis herpetiformis (Duhring) and herpes gestationis with sulfamethoxypyridazine]". Actas Dermo-sifiliograficas (in Spanish). 50: 439–42. PMID13842251.