Visicol® (sodium phosphate monobasic monohydrate, USP, and sodium phosphate dibasic anhydrous, USP) is a bowel evacuant used to clean the colon prior to colonoscopy. Visicol® Tablets are white to off-white compressed tablets, with a monogram "I" on each side of the upper surface and a plain lower surface. Each tablet contains 1.102 grams of sodium phosphate monobasic monohydrate, USP and 0.398 grams of sodium phosphate dibasic anhydrous, USP for a total of 1.5 grams of sodium phosphate. Inert ingredients include microcrystalline cellulose, NF; magnesium stearate, NF; and colloidal silicon dioxide, NF.

The structural and molecular formulae and molecular weights of the active ingredients are shown below:

· Sodium phosphate monobasic monohydrate, USP

Molecular Formula: NaH₂PO₄ H₂O

Molecular Weight: 137.99

· Sodium phosphate dibasic anhydrous, USP

Molecular Formula: Na₂HPO₄

Molecular Weight: 141.96

Visicol® Tablets are for oral administration only.

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