Sacituzumab govitecan infusion days: the day one and day eight schedule

Sacituzumab govitecan, sold under the brand name Trodelvy, is given as a drip into a vein in repeating three-week cycles. In each cycle you have an infusion on day one and another on day eight, followed by a week with no infusion so your body can recover before the next cycle starts on what would be day twenty-two. The dose is worked out from your body weight and is decided by your oncologist. Your first infusion is usually run slowly, over about three hours, and you are watched during it and for at least half an hour afterwards for any reaction. If that first infusion goes well, later infusions are often given more quickly, commonly over one to two hours, again with a short period of observation afterwards. Before each infusion you have a blood test, because this medicine can lower your white cell count, and your team checks that your counts are high enough to go ahead. You are also given medicines beforehand to reduce the chance of a reaction and of sickness. Treatment usually carries on cycle after cycle for as long as it is controlling the cancer and the side effects remain manageable, so there is no fixed number of cycles. Delays or dose reductions are common and are a normal part of keeping treatment safe, not a sign that it has failed.

Two infusions, then a rest week

Day one and day eight of each three-week cycle, then a week off before the next cycle.

A blood test comes first

Your counts are checked before each infusion, and treatment may be delayed if they are low.

The first visit is the longest

Allow most of a day for your first infusion, as it runs slowly and you are observed afterwards.

A printed schedule looks neat, but real treatment rarely runs exactly to plan. Knowing that in advance can take some of the worry out of a delay.

Delays are common

Many people have at least one infusion postponed because of a low white cell count or loose motions. A short delay keeps you safer and does not mean the medicine has stopped working.

The time commitment is real

Two hospital days in every three weeks, plus blood tests, travel and waiting, add up. Plan transport and support early, especially if you travel from another town.

Side effects often peak between infusions

The days after each dose can be harder than the infusion itself, so it helps to keep those days lighter.

What this page cannot tell you

It cannot tell you your dose, your exact infusion length or whether your next infusion will go ahead. Only your team can decide that, based on your blood tests and how you are.

The weeks at home matter as much as the hospital days. Two side effects need particular attention with this medicine: a low white cell count and diarrhoea.

Know your fever rule

Keep a thermometer at home. A high temperature, shivering or feeling suddenly unwell can signal infection when your white cell count is low, and needs urgent assessment the same day, even at night.

Act early on loose motions

Your team will usually give you anti-diarrhoea medicine to start at the first sign of loose stools. Drink plenty of fluids and call if diarrhoea continues, is severe, or you feel faint.

Keep a simple diary

Note your temperature, bowel habits, sickness and energy each day. Bringing it to your next visit helps your team decide whether to adjust the dose.