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Doctor insights on: Phenylephrine H Cl Side Effects

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Side effects of promethazine hydrochloride?

Side effects of promethazine hydrochloride?

Seizures.: Common side effects of this antihistamine include, tardive dyskinesia, confusion in the elderly, drowsiness, dizziness, fatigue, vertigo, respiratory depression, constipation, euphoria, and short temper/irritability. Rare side effects include seizures, and neuroleptic malignant syndrome, a life-threatening neurological disorder. Because of capacity for more severe side effects, avoid in elderly. ...Read more

Dr. Maxime Cannesson
545 doctors shared insights

Phenylephrine (Definition)

Phenylephrine hydrochloride is a decongestant which is a kind of antihistamine type drug (common ...Read more


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Allegra-d side effects?

Allegra-d side effects?

Insomnia, jitters: Allegra d contains 2 drugs. Fexofenadine usually has few side effects, but can be drying to the nasal membranes and mouth, and can have side effects, so check further if you have some. The d portion, on the other hand, is sudafed, and it commonly causes jitters, insomnia, fast heart rate, nausea and headache. It can raise the blood pressure and cause arrhythmias. ...Read more

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Vicodin side effects?

Vicodin side effects?

Multiple: There are many possible side effects including itching, sleepiness, constipation, dizziness, confusion and urinary retention. ...Read more

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Claritin (loratadine) side effects?

Claritin (loratadine) side effects?

Pretty rare: Drowsiness & fatigue are reported by ~2% of users. Headache, abdominal pain, sore throat, diarrhea have been reported. Rare but reported side-effects include liver damage, seizures, & low platelet counts. I have been in practice for 29 years and have occasionally seen drowsiness, headache and abdominal pain associated with Claritin (loratadine) but none of the others so far and its a very commonly used drug. ...Read more

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Side effects of hycodan (hydrocodone)?

Side effects of hycodan (hydrocodone)?

Quite a variety!: Side effects from Hycodan (hydrocodone) can include swelling, rash, increased eye pressure, conjunctivitis, slow or fast pulse, dry mouth, palpitations, chest pain, arrhythmias, cardiac arrest, heart attack, ekg changes, fainting, agitation, coma, dizziness, mental clouding/depression, euphoria, faintness, restlessness, nervousness, weakness, sedation, seizures, visual disturbances, flushing, sweating, itch, hives, nausea/vomiting, & more. ...Read more

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Levocetirizine vs.Desloratadine side effects?

Levocetirizine vs.Desloratadine side effects?

Usually mild: Both are very good antihistamines. Desloratadine: headache, upset stomach, dizziness, sore throat, dry mouth, muscle pain, extreme tiredness, painful menstruation. Levocetirizine: sleepiness, tiredness, weakness, sore throat, dry mouth, fever, cough, nosebleed. ...Read more

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Ephedrine (ephedrine sulfate) side effects and risks?

Ephedrine (ephedrine sulfate) side effects and risks?

Cardiac: Ephedrine (ephedrine sulfate) is a form of adrenalin. It can cause increase in heart rate, elevated blood pressure and even abnormal heart rhythm. It was associated with the deaths of a major league pitcher and a college football player a few years ago. Just because something is over the counter, it may not always be safe. ...Read more

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Side effects of sudafed?

Side effects of sudafed?

Many: Possible side effects include fast or irregular heart beats, tremor, restlessness, insomnia, nausea, vomiting, feeling nervous, high blood pressure, and more. ...Read more

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Lortab side effects.?

Several usually mild: All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most common side effects persist or become bothersome when using lortab: blurred vision; constipation; difficulty breathing; dizziness; drowsiness; flushing; lightheadedness; mental/mood changes; nausea; vomiting. ...Read more

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Promethazine/codeine syrup side effect?

Promethazine/codeine syrup side effect?

Usually None!: In normal dossage, the only remote side-effect would be constipation, maybe itching although rare. With overdose or with blunts or cigs dipped and smoked, hallucinogenic. ...Read more

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Side effects of clarinex (desloratadine)?

Side effects of clarinex (desloratadine)?

Sie effects: Dry mouth or throat, headache, fatigue, myalgias, nausea, dizzyness, the incidence of these side effects is low, often in the range of placebo or control medication. ...Read more

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Side effects of cyclobenzaprine?

Side effects of cyclobenzaprine?

Drowziness,etc..: The main side effects are drowsiness, dizziness, and dry mouth. Drowsiness and dry mouth seem to intensify with higher doses. Other side effects include blurred vision, fatigue, nausea, and headache. Agitation is common, especially in the elderly, and this drug is not recommended for elderly patients due to the possibility for severe side effects, like rhabdomyolysis (muscle breakdown). ...Read more

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Side effects of benadryl (diphenhydramine)?

Side effects of benadryl (diphenhydramine)?

Dried up and sleepy: Why would you want to take benadry (the brand name for diphenhydramine) long term? Fagetaboutit. Side effects are drying of mucous membrane, drowsiness, fatigue, difficulty urinating... ...Read more

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Side effects of sudafed decongestant?

Palpitations, rapid: Heart beat, dryness of mouth, dizziness and at times agitation. It may also cause tiredness/sleepiness in some. ...Read more

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Side effects of tremadol /ultram?

Side effects of tremadol /ultram?

Usually mild: Tramadol may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away: dizziness, weakness, sleepiness, difficulty falling asleep or staying asleep, headache, nervousness, agitation, uncontrollable shaking of a part of the body, muscle tightness, changes in mood, drowsiness, heartburn or indigestion, nausea, vomiting, diarrhea, constipation & itching. ...Read more

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Meclizine side effects?

Meclizine side effects?

Fatigue: Meclizine may cause fatigue, is related to some otc sleep aids. Rarely may produce hyperactivity but that is rare. ...Read more