Do I need to make up a missed orlistat capsule?

No. Each capsule works on the fat in the meal it is taken with. Once that meal has passed, the label describes no catch-up dose — the next capsule simply goes with your next main meal containing fat.

What if I keep forgetting because I eat at odd times?

The label ties the dose to meals rather than to a time of day, which usually helps. The Xenical label says the daily intake of fat, carbohydrate and protein should be distributed over three main meals — that structure is part of what the label asks for, not an add-on.

Does a missed capsule affect my multivitamin timing?

No. Both labels ask for a daily multivitamin regardless, because orlistat reduces the absorption of some fat-soluble vitamins and beta-carotene. Xenical says to take it at least 2 hours before or after orlistat, such as at bedtime; Alli says to take a multivitamin once a day at bedtime.

What if I stop taking orlistat for a while?

The Xenical label says that after stopping, fecal fat content usually returns to pre-treatment levels within 48 to 72 hours. The Alli label says that if you start to regain weight after stopping, you may need to start taking orlistat again alongside your diet and exercise programme.

Missed an orlistat dose? What to do

Q: Can I take two capsules with a big meal to compensate?

No. The Alli Drug Facts label caps the dose at 3 capsules daily, and the Xenical label says doses above 120 mg three times a day have not been shown to provide additional benefit. A larger dose does not appear anywhere in either label.

The rules

Three scenarios, three clear answers.

You remember within an hour of the meal

You are still inside the window

The Xenical label says to take the capsule with each main meal containing fat, during the meal or up to one hour after it. The Alli Drug Facts label says to take 1 capsule with each meal containing fat.

The meal was missed, or had no fat in it

Skip the dose

The Xenical label says that if a meal is occasionally missed or contains no fat, the dose of orlistat can be omitted. Orlistat acts on fat in the meal itself, so a fat-free meal gives it nothing to work on.

More than an hour has passed since the meal

The label does not cover this

Neither the Xenical prescribing information nor the Alli Drug Facts label describes taking a dose outside the during-the-meal-to-one-hour-after window. Rather than guess, ask your pharmacist. What both labels are clear about is the ceiling: Alli says no more than 3 capsules daily, and Xenical says doses above 120 mg three times a day have not been shown to provide additional benefit.

Decision flow

Step through this to figure out what to do right now.

Did the meal contain fat?

If not, no dose is needed

The label says the dose can be omitted if a meal is missed or contains no fat.

Has it been less than an hour since the meal?

Take the capsule now

That is the dosing window in the label: with the meal, or up to one hour after it.

Has it been longer than an hour?

Ask your pharmacist

The labels do not describe a dose taken outside that window. They do say not to exceed three capsules a day.

Do not stack orlistat capsules

There is no catch-up dose for orlistat. The Alli Drug Facts label says not to take more than 3 capsules daily, and the Xenical prescribing information says doses above 120 mg three times a day have not been shown to provide additional benefit. Taking orlistat with a meal high in fat does not improve results either — the label says gastrointestinal effects increase when it is taken with a diet or a single meal high in fat.

Common questions

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Last reviewed: September 2026

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