Albuterol Sulfate Inhalation Solution, 2.5 mg/3 mL Nebule

RespiratoryEssential, 95% service targetPrimary vendor Harborline Pharmaceuticals, lead 1 day, ordered every 3 days00378827052

Stock position

On hand
4,515 nebule18.8 days of supply
On order
0 nebulenothing open
Forecast rate
239.6 nebule/daynext 30 days
Demand over 4 days
1,036 nebulelead time plus review period
Safety stock
2 nebuleempirical 95th percentile of forecast error
Reorder point
1,037 nebuleabove
Stockout
Sat Oct 3
Recommended order
noneby Fri Oct 2
Inventory value
$1,580at $0.35 per nebule

How the forecast was made

Exponential smoothing14% weekly error, over-forecast59% better than naive

A weighted recent average that learns the weekday pattern and any trend. Recent days count more than old ones.

Report card: the model was fit on history up to Tue Jul 21 and scored on the 56 days after. Weekly totals were off by 14% on average (25% day by day), and it over-forecast by 14% overall. A same-weekday-last-week guess would have been off by 34%.

Report card, week by week

Week ofUsedForecastErrorError %
Tue Jul 211,6901,956+26616%
Tue Jul 281,8971,956+593%
Tue Aug 41,4321,956+52437%
Tue Aug 111,8941,956+623%
Tue Aug 181,7841,956+17210%
Tue Aug 251,6701,956+28617%
Tue Sep 11,7441,956+21212%
Tue Sep 81,6001,956+35622%
All 8 weeks13,71115,645+1,93414%

Weekly totals in nebule. Error is forecast minus what was used, so a positive number means the model ran high. This window was hidden from the model when it was fit.

Demand forecast

last 180 days and the next 30
0295591todayreport card windowThu Mar 19Wed Oct 14
actual forecast, 80% and 95% range what the model said during the report card windownebule/day

The model only knows the usage history. If you know something it does not, a coming surge, a new service line, a product being dropped, adjust the forecast and the stock math follows.

Projected on hand

0safety stock 2runs out Sat Oct 3tomorrowThu Oct 8
Projected on hand, nebule: today's stock plus open orders on their expected dates, minus the forecast, day by day.

Lots and expiry

Earliest-expiry-first simulation against the forecast. Waste is what remains in a lot on its expiry date.

LotQuantityExpiresDaysUnit costProjected waste
L001084,515Fri Feb 18522$0.350 nebule · $0

Vendors and prices, last 90 days

VendorPart numberVendor descriptionSells byPaid per nebuleInvoices90-day spendPairing
Harborline Pharmaceuticals00378827052ALBUTEROL SULFATE 2.5 MG/3ML NEB 25/BXBX of 25$0.3331$5,827NDC exact
Cobalt Rx DistributorsCRX-09665ALBUTE 2.5MG/3ML NEB 300CTCS of 300$0.3414$2,646reviewed 0.90