It is that time of year when the gardens and hedgerows are full of daisies.  Chamomile matricaria or Chamomile recutita has been used historically to make the essence Chamomilla.  It proved so valuable when my children were young.  One of them suffered quite badly with teething coupled with colic.  It is available in the following products with excellent reviews:

Helios 30C – Chamomilla

https://www.amazon.co.uk/Helios-Homoeopathy-Chamomilla-30c/dp/B00A3BY5L6/ref=sr_1_5?keywords=chamomilla+homeopathic+remedies&qid=1561988986&s=drugstore&sr=1-5

Nelsons® Teetha® Teething Granules

https://www.amazon.co.uk/Nelsons-Baby-Teetha-Teething-Granules/dp/B0013G4LQY

Weleda 30C – Chamomilla

https://www.hollandandbarrett.com/shop/product/weleda-chamomilla-30c-60020504?skuid=020504

Please read the label. Seek medical advice if problem does not improve.