My mother was allergic to juniper berries. We found out about it because she had a reaction when she drank a mixed drink with gin.
We never cooked with the juniper berry spice and we didn’t use any herbal remedies with juniper. I think her reaction would have been even more severe if we had.
So this is just a word to the wise to be careful if you want to cook with juniper berries. Although it is an uncommon allergy it does happen.
Besides pregnancy there are also other health conditions that do not tolerate juniper berries well. Diabetes and kidney problems are two of them. So be cautious when using this berry for cooking or as an herbal treatment.