Benzalkonium chloride

Antiseptic
ALSO SOLD WITHOUT PRESCRIPTION

Benzalkonium chloride is a antiseptic found in 1 medicine sold in India, such as Dologel CT. Below: what it is for, how it works, how to take it, side effects, interactions and pregnancy advice.

Also called: benzalkonium chloride

What it is used for

Kills germs in mouth gels, wound products and eye drops (as a preservative).

How it works

An antiseptic in throat lozenges, eye-drop preservatives and wipes.

How to take it

As directed on the product.

Common side effects

Throat or eye irritation

Get medical help straight away if

Allergic reaction

Be careful

Can irritate sensitive skin or eyes.

Other medicines and interactions

Preservative in eye drops can irritate with frequent use; consider preservative-free drops.

Pregnancy and breastfeeding

No known concern.

Combination medicines that contain Benzalkonium chloride (1)

Dologel CT

Common questions

What is Benzalkonium chloride used for?

Kills germs in mouth gels, wound products and eye drops (as a preservative).

How does Benzalkonium chloride work?

An antiseptic in throat lozenges, eye-drop preservatives and wipes.

How should I take Benzalkonium chloride?

As directed on the product.

What are the side effects of Benzalkonium chloride?

Common: Throat or eye irritation. Get help straight away for: Allergic reaction.

Does Benzalkonium chloride interact with other medicines?

Preservative in eye drops can irritate with frequent use; consider preservative-free drops.

Is Benzalkonium chloride safe in pregnancy and breastfeeding?

No known concern.

Does Benzalkonium chloride need a prescription in India?

It is usually sold without a prescription in India, but ask a pharmacist if you take other medicines or have a long-term illness.

Which brands contain Benzalkonium chloride?

Dologel CT.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Last reviewed 31 October 2026. Written by Satya Babu from standard prescribing information.

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For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.