Vicks Action 500 Advanced Tablet

Caffeine is a stimulant which works by blocking the action of certain natural substances (adenosine and phosphodiesterase).

Restlessness, Increased heart rate, Increased production of urine

Diphenhydramine is an antihistaminic medication. It blocks the action of certain chemical messengers that are responsible for inflammation, congestion, itching, and other allergic reactions.

Dizziness, Drowsiness, Dryness in mouth, Blurred vision, Confusion, Convulsion, Difficulty in paying attention, Difficulty in urination, Fatigue, Headache, Hypersensitivity, Urinary retention, Muscle twitching, Palpitations, Sedation, Unsteadiness, Impaired coordination, Epigastric pain, Increased bronchial secretions, Dry mucous membrane, Constipation, Euphoria (feeling of intense excitement and happiness), Abnormality of voluntary movements, Discomfort when urinating, Hypotension (low blood pressure), Double vision, Diaphoresis, Erectile dysfunction, Early menstrual periods, Decreased appetite, Allergic sensitization, Photosensitivity, Eczematous eruptions, Agranulocytosis (deficiency of granulocytes in the blood), Paradoxical reactions, Depression, Sleep disturbance, Paresthesia (tingling or pricking sensation), Involuntary muscle movement, Tachycardia, Arrhythmia (irregular heartbeats)

Paracetamol is an analgesic (pain reliever) and anti-pyretic (fever reducer). It works by blocking the release of certain chemical messengers that cause pain and fever.

Hallucination, Abnormal vision, Hypoglycemia (low blood glucose level), Sterile pyuria, Liver toxicity, Headache, Constipation, Itching, Nephropathy, Hypersensitivity, Platelet disorders, Confusion, Depression, Hemorrhage, Insomnia (difficulty in sleeping), Nausea, Vomiting

Phenylephrine is a decongestant. It works by narrowing the small blood vessels which provides temporary relief from inflammation (redness and swelling) and discomfort.

Nausea, Vomiting, Headache, High blood pressure, Arrhythmia (irregular heartbeats), Blurred vision, Breathlessness, Itching, Restlessness, Reflex bradycardia, Excitation, Epigastric pain, Neck pain, Tremors, Hypertensive crisis, Eye pain, Stinging in the eyes, Photophobia, Conjunctival sensitivity, Preterm and low birth weight infants, Fainting, Myocardial infarction, Subarachnoid hemorrhage