I saw a segment on the Victoria Derbyshire show on Weds about a new study into reducing the risk of C-section/intervention. They found that women who progress to c-section have higher acidity levels in the blood surrounding the womb so they tried neutralising it by getting women to drink a bicarbonate of soda drink when they went into labour. When tested the acidity levels had reduced dramatically and the results were really promising, with more vaginal deliveries achieved and shorter labours (closer to 6 hours for first-time pregnancies rather than 12+ is what she said).
I found this article on it here but doesn't include too much detail about the results:
www.telegraph.co.uk/science/2018/01/17/give-bicarbonate-pregnant-women-ease-delivery-new-study/
She said they used a simple bi-carb of soda sachet available over the counter - I wonder if she means indigestion relief or something?
Anyway, I thought it would be worth a try! Will speak to the Midwife about it first but it isn't a drug so don't see why not.