AL Pharm Tech

    Eye Drops

    Latanoprost Eye Drops Day Supply Calculator

    Generic: latanoprost · 0.005% · 2.5 mL bottle (~50 drops) or 7.5 mL bottle (~150 drops)

    Open free days supply calculator

    Worked example

    Instill 1 drop in affected eye(s) at bedtime (HS)

    Dispensed
    2.5 mL bottle (50 drops)
    Daily use
    2 drops/day (both eyes at bedtime)
    25
    days supply
    1. Convert mL to drops: 2.5 mL × 20 drops/mL = 50 drops
    2. SIG: 1 drop OU at bedtime → 1 drop × 2 eyes = 2 drops per day
    3. Days supply = 50 ÷ 2 = 25 days

    Alabama Days Supply Cheat Sheet

    One printable page with the days supply math Alabama pharmacies check at the bench and on every insurance claim.

    One-time download$1
    • Tablets, capsules, and tapers using the whole number rounding Alabama pharmacies expect
    • Insulin vials and pens, with units per package worked out for you
    • Inhalers, puffs, eye drops, and mL to drops conversions
    • The same math taught in the ALBOP approved technician training program from Dalton Pharmacy

    The days supply calculator stays free. Built by Tyler Dalton, PharmD.

    Meet your Alabama training requirement

    Days supply is the math you will use at the bench. Alabama Pharm Tech is ALBOP-approved training that walks you through this math step by step, plus everything else you need to finish on time.

    • ALBOP-approved training program
    • Start today, finish on your schedule
    • Pharmacy math practice with worked solutions
    • One payment of $199, everything included
    Enroll Now - $199

    Quick reference: one eye vs both eyes

    One eye (OD or OS)

    1 drop at bedtime in one eye

    50 drops ÷ 1 = 50 days (2.5 mL)

    Both eyes (OU)

    1 drop at bedtime in each eye

    50 drops ÷ 2 = 25 days (2.5 mL)

    Also sold as brand Xalatan. Use the eye drops tab in the calculator above.

    Product details

    • Brand: Latanoprost
    • Generic: latanoprost
    • Strength: 0.005%
    • Typical package: 2.5 mL bottle (~50 drops) or 7.5 mL bottle (~150 drops)
    • Example NDC: 60505-0580-02
    • Calculator tab: Use the drops section in our tool

    Pharmacy tech tips

    • Latanoprost (brand Xalatan) is the #1 eye drop day supply question on pharmacy exams and in retail workflow.
    • Single eye only (OD or OS): 50 drops ÷ 1 drop/day = 50 days for a 2.5 mL bottle.
    • Both eyes (OU): always double the daily drop count before dividing.
    • Standard conversion: 1 mL ≈ 20 drops (use 20 unless your pharmacy policy differs).
    • 7.5 mL bottle = ~150 drops → 75 days single eye or ~37 days both eyes at bedtime.

    Frequently asked questions

    How do you calculate latanoprost eye drops day supply?

    Multiply mL dispensed by 20 to get total drops. Divide by daily drops used (drops per dose × doses per day × number of eyes treated). Example: 2.5 mL, 1 drop OU at bedtime = 50 ÷ 2 = 25 days.

    Latanoprost one eye vs both eyes — what changes?

    One eye at bedtime: 50 drops ÷ 1 = 50 days. Both eyes at bedtime: 50 drops ÷ 2 = 25 days. The OU multiplier is the most common mistake.

    How many drops are in a 2.5 mL latanoprost bottle?

    Approximately 50 drops using the standard 20 drops/mL rule (2.5 × 20 = 50).

    Is latanoprost the same as latanaprost?

    The correct spelling is latanoprost. It is a prostaglandin analog used for glaucoma; common brand name is Xalatan.

    Related Eye Drops guides

    Timolol day supplyRestasis day supplyLumigan day supplyPrednisolone Acetate day supplyCombigan day supply

    Run the numbers with a free calculator

    Same math, done for you. Enter the quantity and sig and get the day supply in seconds.