If you struggle with moderate to severe environmental allergies and medications only take the edge off, you may be wondering if there’s a better long-term solution. Allergy shots, also known as immunotherapy, are designed to not just treat symptoms but also to address the root cause.
For many patients and parents, immunotherapy is a long-term investment in better breathing, better sleep, and a better quality of life.
“Allergy shots are a form of immunotherapy that gradually retrains your immune system to become less sensitive to specific allergens,” said Julia W. Tripple, MD, associate professor in the Department of Internal Medicine, specializing in Allergy and Immunology. “Unlike antihistamines or nasal sprays that temporarily control symptoms, allergy shots work by changing how your immune system responds to triggers like pollen, dust mites, mold, and pet dander.
“Over time your body becomes less reactive, meaning fewer symptoms and less need for medication,” she said.
How allergen immunotherapy works
“When someone has allergies, their immune system overreacts to something that should be harmless,” Tripple said. “Immunotherapy gently teaches the immune system to calm down.”
Allergy shots contain tiny, controlled amounts of the allergens that trigger symptoms. These doses are gradually increased so the immune system can build tolerance safely.
The process has two phases:
- Build-up phase
- Injections are given once or twice a week.
- The allergen dose increases gradually.
- This phase typically lasts three to nine months.
- Maintenance phase
- Once the effective dose is reached, injections are spaced out (usually every four weeks).
- This phase continues for three to five years.
“Most patients begin noticing improvement once they reach the maintenance phase, with continued gains over time,” Tripple said.
What to expect at each visit
Here’s what a typical visit involves:
- A quick check-in is performed to ensure the patient is feeling well.
- Injection is administered in the upper arm.
- A 30-minute observation period afterward monitors any reactions.
“The injection itself takes just a few seconds. The observation period is an important safety step and allows us to respond immediately if needed — though serious reactions are uncommon,” Tripple said. “For many patients, the time commitment becomes a predictable and manageable part of their routine.”
Benefits and success rates
Allergy shots are one of the few treatments in medicine that can modify the course of allergic disease. Benefits may include:
- Significant reduction in allergy symptoms
- Decreased need for medications
- Improved asthma control
- Fewer sinus infections
- Better sleep and concentration
- Long-lasting relief even after treatment ends
“Immunotherapy has a high success rate for environmental allergies,” Tripple said. “Many patients experience major symptom reduction — and some achieve near-complete relief. Children and adults can both benefit from immunotherapy. For children, early treatment may also reduce the risk of developing new allergies or worsening asthma over time.”
People who have moderate to severe environmental allergies and are not getting enough relief from medications are good candidates for allergy shots. They may also be a strong option for those experiencing bothersome side effects from allergy medications or those who prefer a long-term solution instead of ongoing symptom management.
Safety and side effects
“Allergen immunotherapy has been used safely for decades. When administered properly, it is both effective and well tolerated,” Tripple said. “Common side effects are mild and may include redness or swelling at the injection site and temporary itching. Less commonly, patients may experience more generalized symptoms, which is why we monitor patients after every shot.
“At UTMB, patient safety is our top priority,” she said. “All injections are administered under medical supervision with trained staff and emergency protocols in place. The structured observation period ensures prompt care if needed.”
A long-term investment in better health
Allergy shots require commitment — typically three to five years — but the payoff can be substantial. Instead of simply managing symptoms season after season, immunotherapy works to retrain the immune system and reduce overall allergic response.
For many patients, that means fewer sick days, better sleep, less medication, and more freedom to enjoy daily life.
If you’re ready to explore a long-term solution for your allergies or want to know if your child might benefit, schedule a consultation with UTMB Health Allergy & Immunology today.