BC powder is made up of aspirin and caffeine. In the company’s FAQ 1 , they don’t recommend pregnant people take this medication. You can speak with your healthcare provider about your specific situation, but they’ll likely recommend an alternative for pain control.
For pregnant people, aspirin 2 is generally considered safe in low doses (60-150 milligrams), but the caffeine 3 in BC could hurt developing babies. Because it comes in powder form, the drug takes effect very quickly. The caffeine in it can tighten the blood vessels all over your body, including your uterus, and keep your baby from getting the oxygen they need. Your provider can help guide you to an option that will give you relief and keep your baby safe.