The active ingredient in Phenergan is promethazine hydrochloride, which is an antihistamine that belongs to a group of medicines known as phenothiazines. When you have an allergic reaction, your body creates a natural substance called histamine. Histamine sends signals around your body that trigger symptoms of allergy, such as a runny nose or watery eyes. Antihistamines work by blocking histamine, which prevents your symptoms so you won't have to tolerate an allergic reaction.
Promethazine (the active ingredient in Phenergan) will start to make you feel sleepy around 20 minutes after you take it and may work for up to 12 hours. If you're taking it for a cough or cold symptoms, allergies or nausea, your symptoms should start to improve within 20 minutes. The medicine should work for around 4 to 6 hours. Please take note of dosage requirements.
Phenergan also works directly on the brain to help you feel more relaxed. Many people find Phenergan helps them when travelling with motion sickness. Phenergan Tablets are used to treat the following conditions: For short term use: to treat adults with difficulty sleeping (insomnia).
For allergies (such as hay fever, rashes and hives) Children 2-5 years: Either a single dose of one to three 5ml spoonfuls OR one 5ml spoonful twice a day. DO NOT give more than three 5ml spoonfuls a day
Children 5-10 years: Either a single dose of one to five 5ml spoonfuls OR one or two 5ml spoonfuls twice a day. DO NOT give more than five 5ml spoonfuls a day
Children over 10 years and adults (including the elderly): Start with two 5ml spoonfuls twice a day. This may be increased to a maximum of four 5ml spoonfuls three times a day
For children over 10 years and adults, Phenergan Tablets may be more convenient
Children 2-5 years: One 5ml spoonful the night before the journey. This may be repeated after 6-8 hours if necessary.
Children 5-10 years: Two 5ml spoonfuls the night before the journey. This may be repeated after 6-8 hours if necessary.
Children over 10 years and adults (including the elderly): Five 5ml spoonfuls the night before the journey. This may be repeated after 6-8 hours if necessary.
For children over 10 years and adults, Phenergan Tablets may be more convenient.
As a short term paediatric sedative and for short term treatment of insomnia in adults
Children 2-5 years: Three or four 5ml spoonfuls as a single dose at nighttime
Children 5-10 years: Four or five 5ml spoonfuls as a single dose at nighttime
Children over 10 years and adults (including the elderly): Use of Phenergan Tablets is recommended
Talk to your doctor or pharmacist before taking Phenergan Elixir if you are taking any prescribed medicines.
An allergic reaction. The signs may include: a rash, swallowing or breathing problems, swelling of your lips, face, throat or tongue
Liver problems that may cause the eyes or skin to go yellow (jaundice) ' Muscle stiffness or shaking . Being unable to control some muscles in your head or face
You notice unusual movements of the tongue, facial muscle spasms, rolling eyes and trembling . Very fast, uneven or forceful heartbeat (palpitations) ' Irregular heartbeat '
Tiredness which lasts for a long time. This may be due to a blood problem called anaemia . Over-active behaviour in children
Tell your doctor or pharmacist if any of the following side effects get serious or lasts longer than a few days. Also tell them if you notice any side effects not listed. Dry mouth, blurred vision or you cannot pass water (urine). Feeling drowsy or sleepy, tiredness, disorientation, having nightmares, headaches, feeling restless. Loss of appetite (anorexia), indigestion. Feeling dizzy, lightheaded, faint (hypotension) . Feeling confused, especially in elderly people
' Being more sensitive to the sun than usual. If this happens keep out of direct sunlight and do not use sun lamps Like all medications,
Phenergan Elixir can have side effects, however not everyone will experience these. If you are concerned about any of these side effects or any other side effects, speak to your doctor or pharmacist.
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