No. The H-PROOF label outright warns: "Do not take if you are pregnant or nursing." Manufacturer's directions aside, the Energy Vitamin contains ingredients that either pose a potential danger or haven’t been researched enough to verify safety for pregnant or lactating mothers. Take tyrosine and caffeine, for example. Drugs.com states that pregnancy and breastfeeding are two medical conditions that may interact with caffeine and that it's unknown whether tyrosine can harm an unborn child.Drugs.com. (2023). Caffeine. Drugs.com. Drugs.com. (2024). L-tyrosine. Drugs.com.