Best Cough Medicine: Over-the-Counter and Prescription

Coughing is your body’s way of getting rid of harmful irritants and germs. The cough reflex pushes air out of your lungs to drive out whatever is bothering you.

Coughing is an important function. But frequent or painful coughing can seriously affect your daily activities. This is when most people turn to cough medicine to stop their symptoms.

In this article, we will detail some of the best over-the-counter (OTC) and prescription cough medicine options available.

Types of cough medicine

There are five primary types of cough medicine: antitussive, expectorants, antihistamines, decongestants, and combination medicines. Each of these cough medicine options targets a different cause or symptom. These medications come in both OTC and prescription forms, depending on the severity and underlying condition. Here’s a breakdown of each type, along with examples of both OTC and prescription options for each one.

1. Antitussives

Antitussives, also known as cough suppressants, are the best cough medicine for a dry cough. They work by acting on the brain's cough reflex, effectively telling your body not to react to the tickle in your throat.

OTC antitussive options include:

• Dextromethorphan (found in Delsym, Tussin, Robitussin Cough Gels & Cough Syrup, and Vicks 44 Dry Cough Relief)

Prescription antitussive options include:

• Benzonatate

It’s important to note that other prescription antitussives contain codeine or hydrocodone. These are controlled substances that may cause addiction or dependency. Benzonatate is the only prescription antitussive that does not carry this risk.

2. Expectorants

Expectorant medications are great for wet coughs as they work by thinning mucus from the respiratory system. This is the best way for you to get rid of your phlegm. The body can then expel the thinned mucus, which can relieve chest congestion.

OTC expectorant options include:

• Guaifenesin (found in Mucinex, Robitussin Chest Congestion)

Prescription expectorant options include:

• Prescription-strength guaifenesin (higher-dose formulations are sometimes prescribed for chronic bronchitis or more severe congestion)

Common side effects of expectorants include nausea, dizziness, and headaches.

3. Antihistamines

Antihistamines can help ease coughs caused by an allergic reaction. They work by blocking the action of histamine and help reduce coughing from allergic reactions and postnasal drip.

OTC antihistamine options include:

• Cetirizine (Zyrtec)
• Loratadine (Claritin)
• Diphenhydramine (Benadryl)
• Fexofenadine
• Brompheniramine (Dimetane)
• Chlorpheniramine (Chlor-Trimeton)
• Clemastine (generic for Dayhist)
• Doxylamine (generic for Vicks NyQuil)

Prescription antihistamine options include:

• Hydroxyzine hydrochloride (Atarax, Vistaril)
• Azelastine (Astelin)

Although Azelastine is available over-the-counter as Astepro, it is still frequently prescribed so a doctor can monitor your progress and ensure it works safely with your other medications.

Antihistamines are generally well tolerated. Still, they can cause side effects. These include dizziness, dry mouth, nausea and vomiting, difficulty with urinating, blurred vision, and skin irritation (more common in topical antihistamine use).

If these side effects persist for more than a few days, seek medical attention immediately. The same applies if you begin to notice more severe symptoms such as shortness of breath, skin rash, or chest tightness.

4. Decongestants

Congestion in the nasal passages often leads to mouth breathing, which then dries out the airway and triggers a cough. Decongestants work by narrowing the blood vessels in the nasal passages and respiratory tract. The goal is to ease swelling, making it easier to breathe and lessening the urge to cough.

OTC decongestant options include:

• Pseudoephedrine (Sudafed), although it is important to note that pseudoephedrine is kept behind the pharmacy counter. You will typically need to show a valid ID to purchase it.
• Oxymetazoline, which is generally not recommended for more than a few days at a time because of the risk of rebound congestion.

Oral phenylephrine (Sudafed PE) is another common OTC option that is marketed as a decongestant. However, an FDA review found phenylephrine to be ineffective as a nasal decongestant. It has been recommended to take it off store shelves in 2024.

Prescription decongestant options include:

• Prescription-strength pseudoephedrine (higher-dose formulations may be prescribed when OTC versions are not sufficient)

It is crucial to use decongestants as directed and for a limited time. Long-term use can make congestion worse. Decongestants may not be effective for coughs caused by allergies or irritants.

5. Combination medicines

Many cough and cold medicines contain two or more of the ingredients listed above. These are called combination medicines. They help ease coughing while treating flu and cold symptoms like a runny or stuffy nose and sore throat. While they are convenient, you should avoid double-dosing. Always check if your other medications share the same ingredient.

OTC combination medicine options include:

• Mucinex Fast-Max (Acetaminophen, dextromethorphan, guaifenesin)
• Dayquil Severe Cold + Flu (Acetaminophen, dextromethorphan, guaifenesin, phenylephrine HCl)
• Tylenol Cold + Flu (Acetaminophen, dextromethorphan, guaifenesin, and phenylephrine HCl)

Prescription combination medicine options include:

• Delsym CF (guaifenesin, dextromethorphan, pseudoephedrine)

There are also prescription combination cough medicines that contain controlled substances like codeine or hydrocodone. While effective, these medications also carry the potential for drowsiness, dependence, or misuse. Providers typically reserve them for more severe or persistent symptoms.

The best OTC cough medicines for adults

The best cough medicine for adults will depend on the type of cough you have.

Based on your symptoms, try these OTC cough medicines:

• Best cough suppressant for a dry cough: Antitussives like Robitussin
• Best cough medicine for a wet cough: Expectorants like Mucinex
• Best cough medicine for cough caused by allergies or post-nasal drip: Antihistamines like Benadryl
• Best cough medicine for a cough that occurs with other symptoms (like fever or chills): Combination medicine like Tylenol Cold + Flu
• Best medicine for a sore throat from coughing: Pain relievers like Tylenol or Advil
• Best for cough caused by GERD (acid reflux): Antacids (Tums) or acid reducers like omeprazole (Prilosec OTC) and famotidine (Pepcid)

While OTC cough medicines don't always treat the root cause of a cough, many healthcare providers still recommend them for symptom relief.

Talk to your healthcare provider if your cough worsens or shows no sign of improvement within two weeks.

The best prescription cough medicines for adults

When OTC options aren’t effective, or if a cough is so severe that it prevents sleep, your provider may suggest prescription cough medicine. In the end, your cough could stem from a simple cold or a sinus infection. This type of medication may also be prescribed if your cough is severe, persistent, or caused by an underlying condition that requires stronger treatment.

Based on your symptoms, here’s what a provider may recommend:

• Best prescription cough suppressant for a dry cough: Antitussives like benzonatate, codeine or hydrocodone (often combined with guaifenesin or acetaminophen)
• Best prescription medicine for a wet cough: Prescription-strength expectorants like guaifenesin (high dose)
• Best prescription for cough caused by allergies or post-nasal drip: Antihistamines like hydroxyzine or azelastine, or inhaled corticosteroids
• Best treatment for cough with underlying infection: Antibiotics like azithromycin (only if a bacterial infection is present)
• Best for cough related to asthma or COPD: Inhaled corticosteroids or combination inhalers (like fluticasone/salmeterol)
• Best for cough caused by GERD (acid reflux): Acid-reducing medications like proton pump inhibitors (PPIs), such as omeprazole or pantoprazole

Some prescription medications, especially ACE inhibitors used for high blood pressure, can cause a persistent dry cough. If you think your medication is causing your cough, don’t stop it on your own. Talk to your healthcare provider about switching to a different treatment.

Prescription cough medications can be better for certain conditions, but they may come with stronger side effects or the potential for dependence. Always consult your healthcare provider to find the safest and most appropriate treatment based on your specific symptoms and health history.

At-home cough remedies

If you're dealing with a mild cough and prefer to avoid medicine, home remedies may help soothe your symptoms and support recovery. At-home options include:

• Honey: Honey is a natural remedy for easing sore throats and mild irritation. Mix it with warm water or herbal tea for a soothing drink. You can also take a spoonful before bed. However, honey should not be given to children under 12 months due to the risk of botulism.
• Lozenges: Lozenges (cough drops) are a popular OTC remedy for a cough. These tablets dissolve slowly in the mouth, relieving dry and productive coughs. The active ingredients in cough lozenges typically include menthol, honey, or herbal extracts. Do not give children under five years of age lozenges for their cough. Sucking on a lozenge may be a choking hazard for young children.
• Hydration: Staying well-hydrated helps soothe the throat and thin mucus, making it easier to get rid of. Warm liquids, such as herbal teas, broths, or warm water with honey and lemon can also help soothe the throat.
• Gargling with salt water: This simple yet effective technique involves dissolving salt in warm water. You then use the solution to rinse the throat. The saltwater solution reduces swelling and irritation. It can also help to loosen mucus and remove irritants, relieving both dry and wet coughs.
• Humidifying the air: Dry air is a classic trigger for cough. Humidifiers increase the moisture content in the air, which can help soothe an irritated throat. Keep your humidifier clean to prevent the growth of mold or bacteria. Be sure to follow the guidelines for proper use.

Home remedies like the ones listed above can be a great option for kids dealing with an acute cough, since the FDA does not recommend giving young children cough or cold medicine.

Is cough medicine safe for kids?

When a child is struggling with a cough, the natural instinct is to reach for the same relief that works for adults.

However, children have more sensitive respiratory systems than adults, which makes them more susceptible to side effects from cough medicine. As a result, the U.S. Food and Drug Administration (FDA) does not recommend giving OTC cough and cold medicines to children under 2 years old. These products can cause serious side effects like rapid heart rate and seizures in infants and toddlers.

Here are general guidelines by age:

• Children under 2 years old: Never give OTC cough or cold medicine due to safety concerns.
• Children ages 2 to 4: Most manufacturers recommend not using these medicines in children under 4. Always talk to your child’s doctor before giving any medication.
• For children 4 and older: OTC medicine may be safe, but only if used properly. Read the label carefully and follow dosing instructions exactly. Use the dosing tool (dropper or cup) that comes with the medicine and never guess the amount. Monitor for any side effects like drowsiness, irritability, or allergic reactions. If anything seems off, call your doctor right away.

When treating cough symptoms in young children, caution is key. If you're unsure whether a product is safe, check with your doctor first. Often, simple remedies like fluids and rest can be the best medicine.

What to look for when buying OTC cough syrups

Standing in the pharmacy aisle can be overwhelming. To find the best OTC cough medicine for your cough, you should focus on the label rather than the brand name.

• Single-Ingredient formulas: If you only have a dry cough, look for a product where Dextromethorphan is the only active ingredient. Choosing a multi-symptom formula often means taking fever reducers or decongestants that your body doesn’t actually need, increasing the risk of unnecessary side effects.
• Sugar-free and alcohol-free options: Traditional syrups are often high in sugar to mask the bitter taste of the medicine. If you are managing diabetes or have a sensitivity to alcohol, special formulations that are often labeled as “diabetic-safe” provide the same efficacy without putting you at risk.
• Dosing clarity and tools: A good brand will always include a clearly marked dosing cup or syringe. If a product lacks a specific measuring tool, it is better to choose a different brand to make sure you’re not guessing your dose.
• Potential side effects and warnings: Always check the “Drug Facts” label for active ingredient warnings. That way, you avoid ingredients that may worsen pre-existing conditions like high blood pressure or heart disease.

Side effects of OTC cough medicines

Even the best cough syrups are systemic drugs that can impact your body beyond the respiratory tract. If you’re aware of these potential reactions, you can monitor your health while treating your symptoms.

• Drowsiness or dizziness: This is particularly common with antihistamines (like Benadryl) or combination medications that use alcohol as a solvent. Make sure you read the common side effect list and don’t drive if your medication makes you drowsy.
• Nausea or upset stomach: High doses of expectorants (like guaifenesin) can irritate the stomach lining, especially if taken without food. Take these cough medicines around meal times or eat a snack when you use them.
• Elevated blood pressure: Decongestants can cause blood vessels to constrict, which may lead to a noticeable spike in blood pressure. This effect can be particularly dangerous if you have pre-existing hypertension or cardiovascular issues. Monitor your readings closely while using these products and speak with a healthcare professional to ensure the medication is safe for your heart health.
• Restlessness or jitteriness: Decongestants (like pseudoephedrine) are stimulants that can cause a racing heart and difficulty sleeping. Try to take these medications earlier in the day to avoid insomnia. Consult your doctor first if you have a history of high blood pressure or heart conditions.
• Dry mouth and throat: While antihistamines stop postnasal drip, they can occasionally dry out the airway enough to make a tickling cough more persistent. A humidifier or salt gurgling can help with this symptom.
• Drug interactions: Many OTC cough medications contain acetaminophen. If you are already taking Tylenol for a fever, you risk accidental liver toxicity by double-dosing the same ingredient. Always read the ingredient list and never take more of the medication than suggested.

How to use cough medicine safely

Taking the best over-the-counter medicine effectively requires more than just following the dosage on the bottle. It’s about ensuring the pharmacology doesn’t clash with your body or other treatments.

• Follow the dosing instructions carefully: Never guess your dose using a kitchen spoon, which can vary in volume. Always use the calibrated measuring cup or syringe provided with the medication to make sure you take the exact clinical dose.
• Choose the right medicine for your symptoms: To minimize side effects, opt for single-ingredient formulas that target your specific cough type. Using a multi-symptom liquid when you only have one symptom introduces unnecessary drugs into your body.
• Avoid mixing similar medications: Many cough syrups contain acetaminophen or antihistamines that are also found in cold or allergy pills. Check the “Active Ingredients” on every label to prevent double-dosing and liver strain or drowsiness.
• Check for interactions with other medications: Decongestants and certain suppressants can interact dangerously with prescriptions for high blood pressure or depression. If you are on a daily maintenance medication, speak with a pharmacist or a doctor before using OTC cough medicine.

When to contact your doctor

Good cough medicine can bridge the gap during a common cold. But a cough is often a signal of an underlying issue that requires more than just symptom management. You should transition from self-care to a professional medical evaluation if you notice any of the following:

• Persistent cough lasting more than 2-3 weeks: Any cough that lingers beyond the acute phase is no longer standard. A healthcare provider needs to rule out chronic issues like asthma, acid reflux, or post-nasal drip.
• Cough with high fever: If your cough is accompanied by a fever over 102°F (39°C) or a low-grade fever that refuses to break, it may indicate a bacterial infection like pneumonia rather than a simple virus.
• Shortness of breath or wheezing: If the cough makes it difficult to catch your breath, or if you hear a whistling sound when you breathe, your airways may be constricted, and you might need a prescription inhaler or nebulizer treatment.
• Coughing up blood or discolored mucus: While the color of your phlegm can vary, coughing up blood or thick, rust-colored mucus is a significant red flag that requires prompt clinical investigation.
• Severe chest pain or worsening symptoms: If you experience sharp pain while breathing deeply or if your symptoms take a turn for the worse after five days, it could be a sign of a secondary infection that requires antibiotics.

How Sesame can help with cough treatment

If you’re dealing with an ongoing or painful cough, a healthcare provider on Sesame can offer same-day guidance and prescribe medication if appropriate.

Just book an online doctor appointment at a time that works for you – no long waits, no insurance needed. During your video call, your provider can assess your symptoms and create a treatment plan. If medication is prescribed, your prescription will be sent to your preferred pharmacy for pickup.

Best OTC cough medicine FAQs

Common causes of coughing

The cause of your cough depends on which type of cough you have. Could it be a common cold, the flu or COVID? There are two primary types of cough: acute and chronic. An acute cough lasts for three weeks or less and is caused by a temporary illness like a cold, whooping cough, allergies, pneumonia, COVID or the flu, which share many symptoms.

A chronic cough lasts longer than eight weeks in adults and four weeks in young children. It’s usually caused by longer-term health issues like allergies or asthma. Other causes can be chronic obstructive pulmonary disease (COPD), bronchitis, acid reflux (GERD), congestive heart failure (CHF) or a reaction to a medication.

What is the fastest acting medicine for cough?

The fastest relief depends entirely on the type of cough. For a dry tickle, a suppressant like Delsym can help within 30 minutes, so you can get rid of your cough fast. For a wet cough, the fastest approach is a combination of guaifenesin (to thin the mucus) and a high water intake to physically flush the respiratory tract.

What is the best medicine for a dry cough?

The gold standard for a dry cough is a cough suppressant (antitussive). Look for OTC products where dextromethorphan is the primary ingredient. If the cough is severe enough to prevent you from sleeping or cause chest pain, a provider may prescribe Benzonatate. This silences the reflex without making you groggy.

What is the best cough syrup for pneumonia?

Pneumonia is an infection of the lung tissue. It requires a medical diagnosis and often antibiotics. While a suppressant can help you rest, many providers recommend a prescribed expectorant (high-dose guaifenesin) during the day. That way, phlegm is being cleared from the lungs rather than trapped inside.

What’s the difference between cough suppressants and expectorants?

The difference lies in the goal. Suppressants target the brain’s cough center to stop the reflex, which is ideal for dry coughs. Expectorants target the mucus itself, thinning it out so that your cough becomes more “productive” at clearing your airways.

Can I take cough syrup if I’m already on other medications?

It depends on the active ingredients. Many multi-symptom syrups contain acetaminophen. This can lead to liver toxicity if combined with other pain relievers like Tylenol. Furthermore, decongestants like pseudoephedrine can cause dangerous spikes in blood pressure if taken with certain antidepressants or heart medications. Always consult your healthcare provider if you are managing a chronic condition.