Bolus Boss

—

Carb ratio

—

Correction

—

Target BG

Meal

Carbs (g)

Grams of carbohydrate in the meal. Drives the carb bolus.

Fat (g)

Fat at 9 kcal/g drives extended bolus duration. High-fat meals cause delayed BG rise 2–4 hrs later.

Protein (g)

Protein at 4 kcal/g also contributes to FPU calculation and extended bolus duration.

Blood glucose

Current BG (mg/dL)

Your CGM reading right now. If below 70, treat the low first — no dose will be calculated.

IOB (units)

Insulin on board — read from your pump screen. Reduces the correction component to prevent stacking.

CGM trend

The direction BG is moving. Adjusts the effective BG used for the correction calculation.

Activity

Applied to carb bolus only. Correction is calculated separately.

Vigorous play

50% carb bolus

Moderate

75%

Sedentary

100%

Swimming

Illness

125%

High fever

150%

History

30 days

60 days

90 days

Food library

Patients

Time-of-day ratios

Like your Tandem pump profile. Set different ICR, CF, and target for different times of day. Add as many segments as you need — one segment applies all day.

Device

Pump

CGM

Safety

IOB input

Shows insulin-on-board field in the calculator. Read from your pump screen before dosing.

Show IOB field in calculator

Low BG lockout

Locks the calculator when BG is below 70 for the set duration. Ensures the low is treated before dosing.

Lock when BG < 70 mg/dL

Pre-bolus timer

After confirming a dose, starts a countdown before eating. Gives insulin time to start working.

Wait before starting the meal

Max dose cap

Warning shown if calculated dose exceeds this. Does not block dosing — alerts you to double-check.

Food lookup

Sources are tried in the order shown. Toggle each source on or off. Results show which source found the data.

Nutritionix NIX

Restaurant & chain meals · Free 500/day

Order 1

Open Food Facts OFF

Packaged & branded foods · Free, no key

Order 2

Google Gemini AI AI

gemini-1.5-flash · Free 1500 req/day

Order 3

Anthropic Claude OFF

Disabled · Planned via Edge Function

—

Ratio change log

No ratio changes recorded yet.

Danger zone

Delete patient

Permanently deletes this patient profile and all their dose history.

Share with family

Household invite code

How it works

Warsaw Method · Bolus Boss v2.1 · April 2026

The Warsaw Method

Developed at the Children's Memorial Health Institute in Warsaw, Poland. Accounts for carbohydrates, pre-meal BG, planned activity, and fat/protein via Fat-Protein Units (FPUs) to determine extended bolus duration.

Formula

Carb bolus = Carbs ÷ ICR × Activity modifier
Adjusted BG = Current BG + Trend adjustment
Correction = (Adj BG − Target) ÷ CF − IOB (floored at 0)
Total dose = Carb bolus + Correction
FPUs = (Fat × 9 + Protein × 4) ÷ 100
Extended duration = FPUs rounded, capped 8 hrs
Fat/protein dose = FPUs × 10 ÷ ICR — full dose, no CIQ reduction (CIQ cannot auto-bolus during an active extended bolus)

FPU table

FPUs	Example meals	Duration
<1	Toast, fruit	None
1	Eggs, small pasta	1 hr
2	Mac & cheese	2 hrs
3	Nuggets + fries	3 hrs
4	Large burger + fries	4 hrs
5	Pizza 2–3 slices	5 hrs
6	Pizza 3–4 slices	6 hrs
7	Large pizza meal	7 hrs
8+	Very large high-fat meal	8 hrs max

Known deviations

FPU cap — fixed. Updated from 4-hr to full 8-hr linear scale.

CIQ reduction — removed. CIQ firmware locks out auto-bolus for the entire extended bolus duration plus 60 minutes after. Full Warsaw fat/protein dose is used. CIQ can still increase basal during the window.

CGM trend — community practice, not Warsaw spec. ±15/30/45 adjustments are widely used but not in the original paper.

Activity on carb bolus only. Correction calculated separately to avoid under-treating highs during activity.

Clinical disclaimer: Bolus Boss is a decision-support tool. All doses must be reviewed before administration. Never bolus into a low. Always verify BG on your CGM before dosing. This does not replace your endocrinology team.

Bolus Boss v2.1 · Supabase · Cloudflare · Secure