OTC antiemetics (UK) for SN: Emetrol, Pepto-Bismol

[Zardoz]

Hi all
Are there any recommendations for OTC (non prescription) antiemetics that are compatible with SN?
I've seen occasional threads on here asking the same, but not much conclusive.
UK if that makes any difference.

I've come across Emetrol and Pepto-Bismol online. Would these possibly help? Any chance they could be detrimental to SN method?
I've read that travel-sickness drugs, including antihistamines, won't work as they block the signals in the brain that respond to movement/dizziness and don't work on stomach nausea.

Thanks!