stellon biotech. inc. - Medication Listings

Tacrolimus, previously known as FK506, is the active ingredient in Tacrolimus capsules USP. Tacrolimus is a calcineurin-inhibitor immunosuppressant produced by Streptomyces tsukubaensis . Chemically, tacrolimus is designated as [3 S -[3 R *[ E (1 S *,3 S *,4 S *)],4 S *,5 R *,8 S *,9 E ,12 R *,14 R *,15 S *,16 R *,18 S *,19 S *,26a R *]]-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,19-dihydroxy-3-[2-(4-hydroxy-3-methoxycyclohexyl)-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(2-propenyl)-15,19-epoxy-3H-pyrido[2,1- c ][1,4]oxaazacyclotricosine-1,7,20,21(4H,23H)-tetrone, monohydrate. The chemical structure of tacrolimus is: Tacrolimus has an empirical formula of C 44 H 69 NO 12 •H 2 O and a formula weight of 822.03. Tacrolimus appears as white crystals or crystalline powder. It is practically insoluble in water, freely soluble in ethanol, and very soluble in methanol and chloroform. Tacrolimus is available for oral administration as capsules (tacrolimus capsules USP) containing the equivalent of 0.5 mg, 1 mg or 5 mg of anhydrous tacrolimus USP. In addition, each capsule contains the following inactive ingredients: croscarmellose sodium, hypromellose, anhydrous lactose and magnesium stearate. The tacrolimus capsule shell for 0.5 mg strength consists of gelatin, titanium dioxide and yellow iron oxide. The tacrolimus capsule shell for 1 mg strength consists of gelatin and titanium dioxide. The tacrolimus capsule shell for 5 mg strength consists of red iron oxide, gelatin, and titanium dioxide. Tacrolimus Capsules USP, 0.5 mg, 1 mg and 5 mg are printed with edible black ink. The black ink is comprised of shellac, propylene glycol, strong ammonia solution, black iron oxide and potassium hydroxide. Tacrolimus Capsules, USP meets USP Dissolution Test 8. image