Yes, even though UK-legal THC vapes contain less than 1 mg THC per container, interactions with certain medications are possible.However, any such interaction will be minimal, and its practical implications are unknown.
THC, even at trace levels, is processed by liver enzymes that also break down common medicines. This means there could be changes in how some drugs are absorbed or metabolised. Although, any such impact will be quite little, and may not require any changes in medications.
Anyone taking regular prescriptions should seek medical advice before use.
