Dextromethorphan and zyrtec

Applies to: Tussin DM (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with dextromethorphan.

Typical dosing for Nyquil Cough (dextromethorphan / doxylamine) Each 30 mL (2 tablespoons) of liquid solution contains 30 mg of dextromethorphan and 12.5 mg of doxylamine. Adults and children 12 years and older: The typical dose is 30 mL (2 tablespoons) by mouth every 6 hours. Don't take more than 120 mL (8 tablespoons) in 24 hours.cetirizine food. Applies to: Zyrtec-D (cetirizine / pseudoephedrine) Alcohol can increase the nervous system side effects of cetirizine such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with cetirizine.Applies to: Tylenol Cold and Flu Severe Day & Night (acetaminophen / chlorpheniramine / dextromethorphan / guaifenesin / phenylephrine) and Zyrtec (cetirizine) Using cetirizine together with chlorpheniramine may increase side effects such as dizziness, drowsiness, and difficulty concentrating. Some people, especially the elderly, may also ...X AVOID Claritin D®, Zyrtec D®, or Allegra D® (the D is for decongestants, which should be avoided) Sneezing, Runny Nose Chlorpheniramine and Acetaminophen Chlortrimeton®, Coricidin HBP Cold and Flu® Congestion Guaifenesin Mucinex®, Robitussin® (plain) Combination products with dextromethorphan are also allowed:Current evidence suggests that the combination of dextromethorphan and bupropion is a well-tolerated, rapid-acting treatment option for adults with MDD. Initial success with AXS-05 supports the mechanistic role of glutamatergeric and sigma 1 signaling in the pathophysiology of MDD.Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. Data sources include Micromedex (updated 1 Apr 2024), Cerner Multum™ (updated 21 Apr 2024), ASHP (updated 10 Apr 2024) and others.Auvelity combines a N-methyl-d-aspartate (NMDA) receptor antagonist dextromethorphan (45 mg) with a norepinephrine-dopamine reuptake inhibitor bupropion (105 mg) . Since dextromethorphan is quickly metabolized by cytochrome P450 2D6(CYP2D6), it is difficult to achieve therapeutic levels of dextromethorphan using …

Cough medicines for adults include cough suppressants, expectorants, and multi-symptom cough formula. Dextromethorphan is the suppressant used in OTC remedies that acts on the brain to suppress the cough reflex. Guaifenesin is the OTC expectorant that thins mucus so you can cough it up.But loop and thiazide diuretics can cause your kidneys to get rid of potassium, too. Albuterol can also decrease the amount of potassium in your blood. When taken together, your potassium levels may get too low ( hypokalemia ). Signs and symptoms include muscle weakness, feeling tired, numbness, and irregular heartbeat.Dextromethorphan, guaifenesin, and pseudoephedrine is a combination medicine used to treat cough, stuffy nose, sinus congestion and chest congestion caused by allergies, the common cold, or the flu. dextromethorphan, guaifenesin, and pseudoephedrine will not treat a cough that is caused by smoking, asthma, or emphysema.Applies to: Coricidin HBP Maximum Strength Flu (acetaminophen / chlorpheniramine / dextromethorphan) and Zyrtec (cetirizine) Using cetirizine together with chlorpheniramine may increase side effects such as dizziness, drowsiness, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking ...Cough medications with dextromethorphan (such as Robitussin DM) Nasal saline preparations; Neti Pot; Allergy Medications. Preferred medications are: Antihistamines such as loratadine (Claritin), fenofexadine (Allegra), or cetirizine (Zyrtec) for sneezing and itchy eyes/nose, itching and hives.

The use of over-the-counter cough suppressants containing codeine phosphate should be avoided in children under 12 years and in children of any age known to be CYP2D6 ultra-rapid metabolisers. Cough suppressants containing similar opioid analgesics such as dextromethorphan are not generally recommended in children and should be avoided …Brompheniramine, dextromethorphan, and phenylephrine is a combination medicine used to treat cough, runny or stuffy nose, sneezing, itching, and watery eyes caused by allergies, the common cold ...Zyrtec (Cetirizine) It is notably not metabolized by the cytochrome P450 system. Best option. It can be yes-drowsy for some people though, so experience it before without DXM just in case. ... Yeah, I recommend you to check dextromethorphan wikipedia page, Pharmacology -> Pharmacokinetics. The text explains a lot, and there is a great chart.This causes changes in mood and drowsiness, among other effects. Combining them with promethazine can cause excessive drowsiness. Dizziness, blurred vision, and dry mouth may also become worse. Your healthcare provider may recommend a lower TCA dose, or an alternative to promethazine. 4.Applies to: Tylenol Cold (acetaminophen / chlorpheniramine / dextromethorphan / pseudoephedrine) and Zyrtec (cetirizine) Using cetirizine together with chlorpheniramine may increase side effects such as dizziness, drowsiness, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment ...Uses. This combination medication is used to relieve coughs caused by the common cold, bronchitis, and other breathing illnesses. Guaifenesin belongs to a class of drugs known as expectorants. It ...

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Dextromethorphan is an over-the-counter medication that has been used to treat cough (cough suppressant). It comes in pill, liquid, and cough drop forms. Dextromethorphan can be sold as a single medication and is also available in multi-symptom cold, cough, and flu medications. During pregnancy and while breastfeeding, it is suggested to avoid ...severe dizziness or anxiety, feeling like you might pass out. Common side effects of Mucinex DM may include: dizziness, drowsiness; sleep problems ( insomnia ); diarrhea; or. feeling nervous, restless, anxious, or irritable. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.Dexmethylphenidate disease interactions. There are 13 disease interactions with dexmethylphenidate which include: agitation. cardiac disease. glaucoma. hypertension. psychiatric disorders. substance abuse. tics.Second-generation H 1 antihistamines (e.g., cetirizine [Zyrtec], loratadine, fexofenadine): acceptable to use; cetirizine and loratadine are preferred Stimulant decongestants: avoid use; possible ...

Medications to be avoided or used with caution in all patients with Parkinson’s disease. typical antipsychotics. They. dopamine receptors. The. typical antipsychotics. Note: If an antipsychotic that blocks dopamine receptors needs to be used, atypical antipsychotics are better choices than typical antipsychotics.Singulair and Zyrtec: 11,993 reports; Singulair and Aspirin: 11,743 reports; Singulair and Vitamin d: 9,466 reports; ... It is based on montelukast sodium and dextromethorphan polistirex (the active ingredients of Singulair and Delsym, respectively), and Singulair and Delsym (the brand names). Other drugs that have the same active ingredients ...The study uses data from the FDA. It is based on dextromethorphan hydrobromide; promethazine hydrochloride and cetirizine hydrochloride (the active ingredients of Promethazine dm and Zyrtec, respectively), and Promethazine dm and Zyrtec (the brand names). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered.There are 544 drugs known to interact with Bromfed DM (brompheniramine / dextromethorphan / pseudoephedrine), along with 10 disease interactions, and 2 alcohol/food interactions. Of the total drug interactions, 85 are major, 451 are moderate, and 8 are minor. ... Zyrtec (cetirizine) Bromfed DM alcohol/food interactions. There are 2 …Swallow the whole or split tablet without crushing or chewing. Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion. Improper use of this ...Drug-drug interactions can further be classified as pharmacodynamic or pharmacokinetic interactions. A pharmacodynamic interaction is where 2 or more medications act at the same receptor or interrelated receptors producing additive, synergistic, potentiated, or antagonistic effects. An example with OIM would be an inhaled β-agonist (eg ...Jun 26, 2023 · Dextromethorphan is a drug used in many over-the-counter cough and cold medicines for its antitussive effects.[1] It comes in oral strips, lozenges, liquids, or liquid-filled capsules and formulations often combine the drug with guaifenesin, acetaminophen, and pseudoephedrine.[1] Dextromethorphan is also a commonly abused drug because of its euphoric, hallucinogenic, and dissociative ... Although currently available antidepressants increase monoamine levels soon after the start of treatment, therapeutic benefits are often delayed by several weeks and the majority of patients with major depressive disorder fail to achieve an adequate response to first- or second-line therapies target …

Find patient medical information for Phenergan W/Dextromethorphan oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.

What is Capron DM? Dextromethorphan is a cough suppressant and pyrilamine is an antihistamine.. Capron DM is a combination medicine used to treat cough, runny nose, sneezing, itching, and watery eyes caused by allergies, the common cold, or the flu.. Capron DM will not treat a cough that is caused by smoking, asthma, or emphysema.. Capron DM may also be used for purposes not listed in this ...dextromethorphan. A total of 340 drugs are known to interact with dextromethorphan. Dextromethorphan is in the drug class antitussives. Dextromethorphan is used to treat Cough. Zyrtec. A total of 256 drugs are known to interact with Zyrtec. Zyrtec is in the drug class antihistamines.An oral, fixed-dose combination of dextromethorphan hydrobromide [an uncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist and sigma-1 receptor agonist] and the antidepressant bupropion hydrochloride (an aminoketone and CYP2D6 inhibitor that increases dextromethorphan bioavailability) [AUVEL …Answer. Dextromethorphan (Delsym) does not generally cause or worsen high blood pressure. In addition, there are no drug interactions between dextromethorphan, amlodipine, and metoprolol.. In fact, dextromethorphan is an ingredient in many of the 'Coricidin HBP' products, which are cough/cold medications formulated to be safe to use in those with high blood pressure.Side Effects. Slight drowsiness/ dizziness, nausea, or vomiting may occur. Rarely, some people may experience severe drowsiness/dizziness with normal doses. If any of these effects last or get ...Medications to be avoided or used with caution in all patients with Parkinson's disease. typical antipsychotics. They. dopamine receptors. The. typical antipsychotics. Note: If an antipsychotic that blocks dopamine receptors needs to be used, atypical antipsychotics are better choices than typical antipsychotics.blurred vision; or. painful or difficult urination. nausea, diarrhea, loss of appetite; dizziness; tingling; or. feeling restless. Common side effects may include: This is not a complete list of ...Dexmethylphenidate disease interactions. There are 13 disease interactions with dexmethylphenidate which include: agitation. cardiac disease. glaucoma. hypertension. psychiatric disorders. substance abuse. tics.If you are taking an SSRI such as Zoloft, an MAOI, or other mental health medications, do not take cold medications containing; Dextromethorphan (DXM) Non-steroidal anti-inflammatory drugs (NSAIDs) Decongestants containing phenylephrine and pseudoephedrine. Other interactions are also possible; always talk to a doctor or pharmacist before ...cough suppressant Dextromethorphan Numerous Brands Decongestants/ Appetite suppressants (found in cough, cold, allergy, and sinus medicines) Pseudophedrine ... antihistamines. Cetirizine (Zyrtec®) may or may not have less risk. Topical eye or nose sprays/drops have the least risk of these side effects. non-prescription medications and …

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143 items in 10 pages. 868. 2-Naphthol. C 10 H 8 O. High. All. 754. Acetanilide (acetanilid) C 8 H 9 N O.Applies to: DayQuil / NyQuil Severe Cold and Flu (acetaminophen / dextromethorphan / doxylamine / guaifenesin / phenylephrine) and Zyrtec (cetirizine) Using cetirizine together with doxylamine may increase side effects such as dizziness, drowsiness, and difficulty concentrating. Some people, especially the elderly, may also experience ...However, pseudoephedrine and dextromethorphan can also lower the seizure threshold and are common ingredients in many cold medications. Guaifenesin does not seem to be as much of a problem. …Vicks Formula 44 Custom Care Cough and Cold PM: acetaminophen, chlorpheniramine, and dextromethorphan; Zyrtec D: cetirizine and pseudoephedrineZYRTEC ® Tablets Inactive Ingredients. Ingredient. Description. Colloidal Silicon Dioxide. Used in tablets, common foods, and baking powders to prevent lumps from forming. Croscarmellose Sodium. Helps break down the tablet in your stomach. Hypromellose. Coating that helps mask bitter taste.A. Diphenhydramine, a first-generation antihistamine, does not cause muscle tremors. B. The most common adverse effect of diphenhydramine, a first-generation antihistamine, is drowsiness. C. Diphenhydramine, a first-generation antihistamine, can cause uncommon paradoxical effects in children, such as excitation.With risks like these, it's helpful to be aware of methylpredisolone's top interactions. 1. Blood thinners. Blood thinners are used to prevent and treat blood clots. Examples include warfarin (Coumadin, Jantoven), apixaban (Eliquis), and rivaroxaban (Xarelto). Methylprednisolone can change how blood thinners work in the body.Extended-release tablets. Regular strength (Mucinex DM and generic): Each tablet contains 600 mg of guaifenesin and 30 mg of dextromethorphan. People 12 years and older: The typical dose is 1 or 2 tablets by mouth every 12 hours. Don't take more than 4 tablets in a 24-hour period. Children under age 12: Don't use.Dextromethorphan (also known as robo, dex, DM, and DXM) is a dissociative substance of the morphinan class. It is the primary active ingredient in many common over-the-counter (OTC) cold and cough medicines. When exceeding approved doses, DXM produces dissociative effects similar to those of ketamine and phencyclidine (PCP). It acts as a noncompetitive NMDA receptor antagonist [1].Possible side effects of antitussives. Side effects of antitussives depend on the type a person uses. Codeine can cause several side effects, including: constipation. pruritus or itchy skin ...Auvelity is a fast-acting antidepressant that can treat depression in adults. It combines dextromethorphan and bupropion into a single pill. It may be effective in as little as 1 week, which is faster than other oral antidepressants. But it has a number of risks and side effects to keep in mind.dextromethorphan food. Applies to: Tylenol Cold & Flu Severe (acetaminophen / dextromethorphan / guaifenesin / phenylephrine) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. ….

Dextromethorphan/bupropion ( DXM/BUP ), sold under the brand name Auvelity, is a combination medication for the treatment of major depressive disorder (MDD). [1] Its active components are dextromethorphan (DXM) and bupropion. [1] Patients who stayed on the medication had an average of 11% greater reduction in depressive symptoms than placebo in ...Robitussin DM. Ryneze. Semprex-D. Tannate Pediatric. Tripohist D. Uni-Tann D. ZyrTEC-D. Canadian Brand Name. Benylin For Allergies. Descriptions. In November …Applies to: Cough Syrup DM (dextromethorphan) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with dextromethorphan.Dextromethorphan/bupropion (DXM/BUP), sold under the brand name Auvelity, is a combination medication for the treatment of major depressive disorder (MDD). Its active components are dextromethorphan (DXM) and bupropion. Patients who stayed on the medication had an average of 11% greater reduction in depressive symptoms than placebo in an FDA approval trial.Find patient medical information for Guaifenesin W/Dextromethorphan oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.Applies to: Robitussin Allergy & Cough (brompheniramine / dextromethorphan / pseudoephedrine) and Zyrtec (cetirizine) Using cetirizine together with brompheniramine may increase side effects such as dizziness, drowsiness, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and ...The Web: This cough medicine staple — frequently marked on labels with a DM or DXM — is an antitussive, or cough suppressant, frequently found in brands like Vicks, TheraFlu, and Robitussin. (And it's the scary stuff that can cause hallucinations — that's why a lot of the meds containing it may be kept behind the pharmacy counter!)Jan 14, 2019 · However, pseudoephedrine and dextromethorphan can also lower the seizure threshold and are common ingredients in many cold medications. Guaifenesin does not seem to be as much of a problem. Some people are also sensitive to antihistamines, so we suggest that you avoid diphenhydramine (Benadryl) and cetirizine (Zyrtec). Dextromethorphan and zyrtec, 143 items in 10 pages. 868. 2-Naphthol. C 10 H 8 O. High. All. 754. Acetanilide (acetanilid) C 8 H 9 N O., Power through your day with an enhanced formula that soothes your irritated throat and provides fast and powerful relief from your worst cough, cold & flu symptoms. Get daytime relief with this maximum strength formula in raspberry mint. ⚬This product contains the active ingredient Acetaminophen, Dextromethorphan HBr, Guaifenesin and ..., Can Zyrtec-D be taken with Mucinex DM (Dextromethorphan HBr 20 mg; Guaifenesin 400 mg)? Answer. Yes, Zyrtec-D can safely be taken with Mucinex DM. None of the active ingredients in either medication are known to interact with each other. In-Depth Look, Common side effects of dextromethorphan and quinidine may include: dizziness, weakness; diarrhea, gas, vomiting; swelling in your hands or feet; flu symptoms, cough; or. abnormal liver function tests. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects., A combination of dextromethorphan and quinidine was not included in the analysis because its use is not approved in Japan. Statistical analyses. All statistical analyses were performed using R software (version 3.5.1). For each included drug, we calculated the reporting odds ratio (ROR) to identify the drugs potentially associated with the ..., This includes isocarboxazid, phenelzine, tranylcypromine, selegiline, or rasagiline. Very high blood pressure may happen. If you are taking any of these drugs: Linezolid or methylene blue. This is not a list of all drugs or health problems that interact with this drug., Dextromethorphan, a very weak opiate, dulls the cough reflex. Pseudoephedrine and related chemicals are decongestants. They decrease mucus production but can raise blood pressure and cause ..., Dextromethorphan solution is a cough suppressant. It helps relieve your cough by calming your cough reflex. Robitussin® is a common brand name. Follow the dosing instructions closely and always use a specially marked spoon or container to measure each dose. Household spoons won’t give you an accurate measurement., Dextromethorphan (DM) has been used for more than 50 years as an over-the-counter antitussive.Studies have revealed a complex pharmacology of DM with mechanisms beyond blockade of N-methyl-d-aspartate (NMDA) receptors and inhibition of glutamate excitotoxicity, likely contributing to its pharmacological activity and clinical …, Published Oct 13, 2022. Last updated May 02, 2024. Key points. Benzonatate is safe to use with over-the-counter cough medications, like dextromethorphan. Although studies with dextromethorphan are lacking, the combination of benzonatate and guaifenesin has shown positive results when compared to either alone. Answer. Thanks for reaching out!, There are 18 disease interactions with Promethazine DM (dextromethorphan / promethazine) which include: acute alcohol intoxication. cardiovascular disease. CNS depression. head injury. antidopaminergic effects 1. asthma. anticholinergic effects. asthma/COPD., Applies to: Zyrtec (cetirizine) Alcohol can increase the nervous system side effects of cetirizine such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with cetirizine., Typical dosing for Nuedexta (dextromethorphan / quinidine) Each Nuedexta (dextromethorphan / quinidine) capsule contains 20 mg of dextromethorphan and 10 mg of quinidine. Adults: The typical starting dose is 1 capsule by mouth once a day for 7 days. Then on day 8, the dose is 1 capsule by mouth every 12 hours., There are 544 drugs known to interact with Bromfed DM (brompheniramine / dextromethorphan / pseudoephedrine), along with 10 disease interactions, and 2 alcohol/food interactions. Of the total drug interactions, 85 are major, 451 are moderate, and 8 are minor. ... Zyrtec (cetirizine) Bromfed DM alcohol/food interactions. There are 2 alcohol/food ..., ZyrTEC-D; Canadian Brand Name. Actifed Sinus Regular; Adult Nighttime ColdFlu Relief - Cherry Flavor; ... Dextromethorphan Expectorants—Expectorants work by loosening the mucus or phlegm in the lungs. The main expectorant used in cough and cold medicines is guaifenesin. Other ingredients added as expectorants (for example, ammonium chloride ..., Dextromethorphan, or DXM for short, is an ingredient that works in the brain and central nervous system to target signals that trigger the cough reflex and ultimately help reduce the urge to cough. DXM is the main ingredient in over-the-counter (OTC) cough products such as Robitussin 12 Hour, a powerful dry-cough-relief medicine., dextromethorphan food. Applies to: Theraflu Daytime Severe Cold & Cough (acetaminophen / dextromethorphan / phenylephrine) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment., This medication is used for temporary relief of coughs without phlegm that are caused by certain infections of the air passages (such as sinusitis, common..., Auvelity combines a N-methyl-d-aspartate (NMDA) receptor antagonist dextromethorphan (45 mg) with a norepinephrine-dopamine reuptake inhibitor bupropion (105 mg) . Since dextromethorphan is quickly metabolized by cytochrome P450 2D6(CYP2D6), it is difficult to achieve therapeutic levels of dextromethorphan using …, Lists the various brand names available for medicines containing dextromethorphan. Find information on dextromethorphan use, treatment, drug class and molecular formula. , cetirizine food. Applies to: Zyrtec-D (cetirizine / pseudoephedrine) Alcohol can increase the nervous system side effects of cetirizine such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with cetirizine., Zyrtec (cetirizine) Chlorpheniramine alcohol/food interactions. There is 1 alcohol/food interaction with chlorpheniramine. Chlorpheniramine disease interactions. There are 4 disease interactions with chlorpheniramine which include: anticholinergic effects; asthma/COPD; cardiovascular; renal/liver disease, Dextromethorphan is one of the most widely used antitussives for the treatment of cough associated with acute upper respiratory tract infection. However, there is very little data to support the efficacy of dextromethorphan in this disease state. This aim of this study was to obtain more information …, Dextromethorphan and promethazine is a combination medicine used to treat cough, stuffy nose, runny nose, and sneezing caused by colds or allergies. dextromethorphan and promethazine is for use in adults and children at least 2 years old. Dextromethorphan and promethazine may also be used for purposes not listed in this medication guide., Dextromethorphan is used to temporarily relieve cough caused by the common cold, the flu, or other conditions. Dextromethorphan will relieve a cough but will not treat the …, Every 20 mL of Robitussin Maximum Strength Cough and Chest Congestion DM ("maximum strength Robitussin DM") liquid contains: 20 mg of dextromethorphan. 400 mg of guaifenesin. The adult dosage of maximum strength Robitussin DM liquid is 20 mL by mouth every 4 hours. Don't take more than 6 doses (120 mL) in 24 hours., Dextromethorphan is an over-the-counter (OTC) cough reliever used in adults and some children. Learn about side effects, dosage, and more., It is a cough suppressant that works by decreasing the feeling of needing to cough. Cough -and-cold products have not been shown to be safe or effective in children younger than 6 years. Do not ..., The study uses data from the FDA. It is based on dextromethorphan hydrobromide; promethazine hydrochloride and cetirizine hydrochloride (the active ingredients of Promethazine dm and Zyrtec, respectively), and Promethazine dm and Zyrtec (the brand names). Other drugs that have the same active ingredients (e.g. generic drugs) are not …, Can you take cetirizine hydrochloride and loratadine together? A doctor has provided 1 answer. can you take delsym (dextromethorphan) and zyrtec at the same time?: Yes: You can take both together according to the instructions., Children's Zyrtec. Children's Mucinex Cough contains two ingredients: Dextromethorphan. Guaifenesin. Children's Zyrtec contains one: Cetirizine. All three of these drugs are considered to be safe together. There is no known interaction between them. Therefore, in this case, you should be fine giving Children's Zyrtec with Children's Mucinex Cough., Extended-release tablets. Regular strength (Mucinex DM and generic): Each tablet contains 600 mg of guaifenesin and 30 mg of dextromethorphan. People 12 years and older: The typical dose is 1 or 2 tablets by mouth every 12 hours. Don't take more than 4 tablets in a 24-hour period. Children under age 12: Don't use., Dextromethorphan is a cough suppressant that affects a certain part of the brain (cough center), reducing the urge to cough. Decongestants help relieve stuffy nose symptoms.