It is generally safe to consume pink tonic water during pregnancy, including at 23 weeks. However, it is important to check the ingredients and consult with your healthcare provider before consuming any specific brand or type of tonic water. Pink tonic water typically contains quinine, which is a compound that gives it its distinctive flavor. While small amounts of quinine are generally considered safe during pregnancy, excessive consumption should be avoided as it may have adverse effects on the baby's development. Additionally, some brands may contain artificial sweeteners or other additives that could be harmful. It is always best to err on the side of caution and seek professional advice before making any dietary choices during pregnancy.