Drug Conversions for NAPLEX

Multiply by 0.8

Aminophylline to Theophylline

20 mEq/15 mL

KCl solution (KCl 10%) to tablets

40%

Elemental calcium in calcium carbonate

21%

Elemental calcium in calcium citrate

1:1

Insulin usual conversion

use 80% NPH dose

NPH dosed BID to glargine dosed daily

use 80% Toujeo dose

Toujeo to other forms of glargine or detemir

50 mg

Ethacrynic acid

40 mg

Furosemide

20 mg

Torsemide

1 mg

Bumetanide

1:2

Furosemide IV:PO

1:1

Loops (other than furosemide) IV:PO

5 mL

lithium citrate syrup

2 mg

Pitavastatin

5 mg

Rosuvastatin

10 mg

Atorvastatin

20 mg

Simvastatin

40 mg

Lovastatin

40 mg

Pravastatin

80 mg

Fluvastatin

25 mg

Cortisone

20 mg

Hydrocortisone

5 mg

Prednisone

5 mg

Prednisolone

4 mg

Methylprednisolone

4 mg

Triamcinolone

0.75 mg

Dexamethasone

0.6 mg

Betamethasone

0.75:1

Levothyroxine IV:PO

1:2.5

Metoprolol IV:PO

300 mg

Lithium carbonate

8 mEq

Lithium ion