After allergy injections, what is the best method of treating severe allergies? thanks!

Add antihiastmines!: Good evening, the question is not very clear to me. It takes many months before allergy shots produce any visible effect. The reason is the early shots carry very little allergen, often not of enough quantity to induce an immune response. If many months have passed without any relief, you may need medications such as antihistamines in addition to shots. Follow the avoidance measures carefully.