Disclaimer: I’m not a doctor, but speaking from personal experience. I don’t believe so. At least it’s recommended by our allergy doctor before the shots and I

Disclaimer: I’m not a doctor, but speaking from personal experience. I don’t believe so. At least it’s recommended by our allergy doctor before the shots and I’ve read it on other allergy doctors’ websites also. In fact this link suggests that it improves the effectiveness[0] [0] https://acaai.org/resources/connect/ask-allergist/antihistamines-allergy-shots https://acaai.org/resources/connect/ask-allergist/antihistam...