Which drugs interfere with alavert (loratadine)?

Loratadine safety. Very few. Epocrates lists only ranolazine, amiodarone, Darunavir and dasatinib. In general, claritin, (loratadine) alavert, Loratadine is a very safe medication and that is why it is otc.
Alavert. Other antihistamines, alcohol, ranolazine, amiodarone, darunavir, dasatinib. What do you mean by interfere?
A few drugs. Amiodarone and darunavir. One used for cardiac arrhythmias and the other for HIV infections. Both can cause loratidine levels to increase.