Side effect

What happens

What to do about it

COMMON (less than about 1 in 10 people might get these)

Blurred vision

Things look fuzzy and you can't focus properly.

Don't drive. See your doctor if you are worried.

Dry mouth

Not enough saliva or spit.

Suck boiled sweets or wine gums (but be careful if you are putting on weight). If it is still bad, your doctor may be able to give you a mouth spray.

Constipation

When you want to poop but can't (the opposite of diarrhoea). You can't pass a motion.

Make sure you eat enough fibre, cereal or fruit. Make sure you are drinking enough fluid. Make sure you keep active and get some exercise e.g. walking. If this does not help, ask your doctor or pharmacist for a mild laxative.

RARE (less than about 1 in 100 people might get these)

Stomach upset

This includes feeling sick and getting diarrhoea (the runs).

If you feel like this for more than a week after starting an anticholinergic, tell your doctor. Taking it with food may help.

Urine retention

Not much urine passed.

Contact your doctor now.

Dizziness

Feeling light-headed and faint.

Your dose may be too high, contact your doctor. Don't stand up too quickly. Try and lie down when you feel it coming. Don't drive.

Confusion

Your mind is all mixed up.

Your dose may be too high. Contact your doctor.