Symptoms of a NyQuil overdose include loss of appetite, nausea, vomiting, confusion, flushing, fatigue, seizures, hallucinations, stomach ache, loss of coordination and agitation, states WebMD. NyQuil liquid includes four active ingredients: acetaminophen, dextromethorphan, doxylamine and pseudoephedrine, according to Drugs.com. These ingredients treat symptoms of colds, allergies and respiratory infections.Continue Reading
As a brand, NyQuil formulas vary depending on the particular product. All products labeled NyQuil include alcohol, antihistamines or hypnotics. Different NyQuil formulas have been termed NyQuil D, NyQuil Cold/Flu Multisymptom Relief, NyQuil Sinus, NyQuil Cough, Children's NyQuil and ZzzQuil, according to Wikipedia.
Dextromethorphan is the most common ingredient in NyQuil products. Dextromethorphan is a cough suppressant that is poisonous in high doses. Symptoms of a dextromethorphan overdose include dizziness, breathing problems, hallucinations, muscle twitches, hyperthermia, coma, nausea, rapid heart beat, blurred vision and vomiting, according to the New York Times' Health Guide.
Doxylamine is the second most common ingredient in NyQuil products. Doxylamine is an antihistamine and sedative used to treat colds and allergies in combination with other drugs. Symptoms of a doxylamine overdose include insomnia, night terrors, dilated pupils, dry mouth, euphoria, hallucinations, seizures and death, according to Wikipedia. DayQuil is another formulation created by the same company as NyQuil. DayQuil differs from NyQuil in its lack of drowsiness-inducing antihistamines.Learn more about Side Effects
Drugs.com states that cyanide poisoning can present symptoms such as headaches, confusion, dizziness, anxiety, nausea and vomiting as well as restlessness, shortness of breath, rapid breathing, chest pain, irregular heartbeat, loss of consciousness and seizures. The severity of symptoms is dependent on the amount of cyanide ingested. Cyanide poisoning occurs when a person inhales, ingests or touches cyanide, a poisonous chemical that prevents oxygen absorption in the body.Full Answer >
The most common side effects of vitamin D include fatigue, weakness, dry mouth or a metallic taste in the mouth, loss of appetite, nausea and vomiting, according to WebMD. Most people do not experience side effects with vitamin D, unless they take too much.Full Answer >
Symptoms of Lamictal, or lamotrigine, withdrawal may include mood swings, depression, anger, loss of balance, anxiety, fatigue, headaches, nausea, vomiting and tingling sensations, according to Mental Health Daily. Rx List states that seizures are another potential withdrawal symptom. The symptoms of Lamictal withdrawal depend on a variety of factors, including how long the patient has been taking Lamictal, how quickly the dose is discontinued and the dosage.Full Answer >
Common side effects of NyQuil include constipation, appetite loss, anxiousness, stomach upset and queasiness, according to Drugs.com. Severe side effects include urinary difficulties, hives and irregular heartbeat. It is important for individuals to seek medical attention if common side effects are persistent or individuals experience any severe side effects.Full Answer >