Sedating antihistamines over the counter uk
They are rarely prescribed now, so we do not give any details about their use here.
Antihistamines can cause drowsiness, which might help you fall asleep for a few nights — but routine use of antihistamines for insomnia isn't recommended.
Recent studies have shown that anticholinergics might increase the risk of dementia.
These drugs also have numerous side effects in older adults, such as confusion, hallucinations, dry mouth, blurred vision, constipation, nausea, impaired sweating, inability to empty the bladder completely (urinary retention) and rapid heart rate (tachycardia).
These conditions happen when your immune system reacts inappropriately to a particular trigger (allergen) – this is known as an allergic reaction.
Conjunctivitis can sometimes be caused by an allergic reaction, so antihistamines may help. They can help ease nausea (including in travel sickness) and vertigo, relieve asthma and aid sleep.
Start with lifestyle changes instead: If you continue to have trouble falling or staying asleep, consult your doctor.
After taking them you may be rather unsteady and clumsy if you need to get up during the night, e.g. * Promethazine injection is a prescription-only medicine and administered only by healthcare professionals in appropriate circumstances.
In some cases, short-term use of prescription sleep aids might be recommended as well.
Because they help dampen the immune response (see How do antihistamines work, below), they can be used to help treat skin conditions such as hives (urticaria), eczema and dermatitis.
Antihistamines work by blocking the effect of histamine in your body.
This helps to prevent inflammation and eases allergic reactions.