It may take up to several days of using Veramyst nasal spray before your symptoms improve. Tell your doctor if your symptoms do not improve after a week of treatment. Veramyst can lower blood cells that help your body fight infections. Avoid being near people who are sick or have infections. Call your doctor for preventive treatment if you are exposed to chicken pox or measles. These. Summary. We compare the side effects and drug effectiveness of Veramyst and Zyrtec allergy. The study is created by eHealthMe based on reports of 99,755 people who take Veramyst and Zyrtec allergy, and is updated regularly. Compare Veramyst vs. Zyrtec, which is better for uses like: Seasonal Allergies, Allergic Rhinitis and Rhinitis. Compare head-to-head ratings, side effects, warnings, dosages, interactions and patient reviews. - Page 4 You can either try to stick it out and hope that your body adjusts, or you can try something else. I take one Claritin in the morning and two Benadryls at night before I go to bed. That seems to help me. I couldn't take the Zyrtec — it made me feel too awful. A longer term solution is allergy shots (although they can be time consuming and expensive). — Right now, I take Veramyst (will switch to Rhinocort when I get KU tho bc it's category B and veramyst is category C) that I take daily, zyrtec I take daily, and I also take a lot of benadryl and sudafed. It SUCKS. I was just telling DH tonight I can't imagine a. However, it is better to take these under the supervision of a doctor as the side effects can be monitored. 3. Uterine fibroids are common and cause menorrhagia (heavy menstrual periods). If you take protease inhibitors or certain antibiotics or antifungals with Veramyst, drug interactions may potentially occur. Both types of medicines can increase the level of Veramyst in the blood, which could increase your risk of dangerous side effects. Tell all of your health care providers that you take Veramyst (fluticasone nasal spray). This includes your doctors, nurses, pharmacists, and dentists. This includes your doctors, nurses, pharmacists, and dentists. Once you start taking Flonase or fluticasone, your symptoms may not improve for at least 12 hours, and it could take several more days to experience the full benefit of the medication. Summary. Drug interactions are reported among people who take Veramyst and Zyrtec together. This study is created by eHealthMe based on reports of 284 people who take Veramyst and Zyrtec from FDA, and is updated regularly.