Coffee for Seasonal Allergies: Benefits, Side Effects, and Dosage

The 1 Drink to Sip to Soothe Seasonal Allergies

The 1 Drink to Sip to Soothe Seasonal Allergies
Getty Images

If you’re allergic to pollen or other blooming plants, you might have to take daily allergy medication.

But for the fatigue and grogginess that come with seasonal allergies? Coffee may help, says Purvi Parikh, MD, an allergist and immunologist with the Allergy & Asthma Network.

Why Coffee Might Help Relieve Allergies

“Caffeine helps with sleepiness, as we all know, but it can also help with congestion,” says Dr. Parikh. Seasonal allergies can cause congestion and inflammation in the nasal passages and airways, causing coughing, a stuffy nose, and, in some cases, wheezing and shortness of breath, especially if you also have asthma.

But studies have found that caffeine can serve as a bronchodilator and is associated with better airway function in people with asthma and breathing issues.

The caffeine in coffee may help relieve the drowsiness caused by certain allergy medication, says Parikh. “Most allergy pills are antihistamines that make you sleepy. They help with symptoms, but a side effect of Benadryl, Claritin, Zyrtec, and Xyzal, among others, is drowsiness,” says Parikh.

Of course, you can work with your allergist to find nondrowsy options or topical remedies like a nasal spray or eye drops. “Those are a good option if you’re very sensitive and sleepy from the allergy pills,” Parikh says. “But the caffeine definitely helps, too.”

Sipping hot coffee — and hot beverages in general — may also help open up your nasal passageways and relieve the congestion that comes with allergies and the common cold.

How Much Coffee Should You Drink?

If you’re drinking coffee to help with allergies, “the equivalent of one cup of coffee is plenty for most people,” says Parikh. That said, if you’re sensitive to caffeine, the amount you can tolerate without negative side effects — like anxiety and headaches — may vary.

“Some people are very sensitive to caffeine; some people who drink it constantly are not as sensitive to it,” says Parikh. In general, the tolerable upper limit is 400 milligrams (mg) of caffeine, or about 4 regular cups of coffee.

Try drinking half-caffeinated or decaf coffee if you’re sensitive but still want some of the benefits of a warm beverage for your allergy symptoms.

Can Caffeine Make Allergies Worse?

Unfortunately, caffeine can sometimes have a negative effect on allergies. Some research has found that long-term use of decongestants that contain caffeine may actually thicken nasal mucus, which could increase symptoms of seasonal allergies.

Older research has also suggested that drinking caffeine may be associated with increased histamine levels — the chemical in your body responsible for allergic reactions. More current research is needed to confirm this finding.

Other Drinks That May Help Allergies

If coffee is not your thing, here are some other drinks that can help relieve congestion and soothe seasonal allergy symptoms.

Water

Drinking plenty of water throughout the day can help clear your throat, thin mucus, and prevent dehydration.

 In general, it’s recommended to get around 11.5 to 15.5 cups of water per day through drinking and eating water-rich foods.

Tea

Hot tea is another sore throat soother that can provide herbal allergy relief. It may also help relieve sinus pressure.

 Some great options are green tea, peppermint, and chamomile.

If you’re more of a savory person and have somewhat lost your appetite with your allergies or cold, try drinking broth or bone broth the same way you would tea, to get in some calories and improve congestion.

Orange Juice

Vitamin C is a natural powerhouse for our immune systems. Although there isn’t enough evidence to show that it can help with allergies specifically, it could help you stay hydrated. Try drinking fresh orange juice or eating other foods high in vitamin C, like strawberries, lemons, papaya, and kiwi.

Other Natural Allergy Remedies

If allergy medication isn’t your jam or isn’t getting the job done, try some home remedies for allergies that can make symptoms a little less intrusive. Here are some tips:

  • Reduce exposure to triggers by staying indoors on high-allergen days.
  • Shower daily: Wash away allergens from skin and hair at the end of the day.
  • Use an air purifier indoors.
  • Rinse your sinuses with saline solution.

The Takeaway

  • Coffee may help relieve sinus pressure and congestion caused by seasonal allergies, plus drowsiness caused by some allergy medications.
  • While some research has found that caffeine may help open your airways if you have asthma, more studies are needed on how caffeine affects your sinuses and allergic response in particular.
  • Drinking plenty of water, juice, and decaffeinated herbal tea can help thin mucus, open your sinuses, and keep you hydrated throughout the day.
  • Other allergy relief methods, like nasal spray and eye drops, can help relieve your symptoms.
EDITORIAL SOURCES
Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy. We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with lived experience, and information from top institutions.
Resources
  1. Berg S. What Doctors Wish Patients Knew About the Impact of Caffeine. American Medical Association. July 25, 2025.
  2. Spilling the Beans: How Much Caffeine Is Too Much? U.S. Food and Drug Administration (FDA). August 28, 2024.
  3. Wang J et al. Rise and Fall of Decongestants in Treating Nasal Congestion Related Diseases. Expert Opinion on Pharmacotherapy. Oct 6, 2024.
  4. John J et al. Caffeine Promotes Glutamate and Histamine Release in the Posterior Hypothalamus. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. Sept 14, 2021.
  5. Coughing Up Phlegm. Cleveland Clinic. January 20, 2023.
  6. Gordon B. How Much Water Do You Need? Academy of Nutrition and Dietetics. June 23, 2022.
  7. Relieve Sinus Congestion and Pressure at Home. Cleveland Clinic. January 12, 2023.
  8. Mayo Clinic Staff. Seasonal Allergies: Nip Them in the Bud. The Mayo Clinic. Feb 28, 2024.

Asal Naderi, MD

Medical Reviewer

Asal Naderi, MD, is an assistant clinical professor of allergy and immunology at the Keck School of Medicine at the University of Southern California. Her areas of focus include allergic rhinitis, asthma, chronic sinusitis with nasal polyposis, chronic urticaria, angioedema, food allergy, drug allergy, and primary immunodeficiencies.

She received her bachelor's degree from the University of California Los Angeles and then received her medical degree from Saint Louis University. She completed her internal medicine residency at University of California Irvine, and her fellowship at the University of California Irvine. She has been a principal investigator in clinical trials for asthma as well as chronic sinusitis.

Outside of the office, she enjoys exercising, cooking and spending time with her family and friends.

Kara Jillian Brown

Author