I have been on allergy drops for 2 years now. The service can be paused while you are pregnant and easily resumed afterwards. The routine is easy to maintain by keeping your drops near your toothbrush and using them after brushing your teeth in the morning. I'm fairly allergic to cats- any time my cat's claws grazed my skin, it would itch for a week. Now, it doesn't itch at all. Additionally, being allergic to grass, I could never sit in grass and play with my kids, but know I can :)