Theophylline (200 mg)

Theophylline Melting Point Standard (2 x 500 mg) (Approximately 271 degrees)

Theophylline Related Compound B (25 mg) (3-Methyl-1H-purine-2,6-dione)

Theophylline Related Compound C (25 mg) (N-(6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)formamide)

Theophylline Related Compound D (30 mg) (N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride monohydrate)

Theophylline Related Compound F (25 mg) (7-(2-Hydroxyethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione)

Thiabendazole (100 mg)

Thiamine Hydrochloride (500 mg) (Vitamin B1 Hydrochloride)

Thiethylperazine Maleate (200 mg)

Thimerosal (500 mg)