Hi and welcome to HCM Albendazole is an anthelmintic (an-thel-MIN-tik) or anti-worm medication. It prevents newly hatched insect larvae (worms) from growing or multiplying in your body. As you have information that FDA has classified it as pregnancy category C: It means either studies in animals have revealed adverse effects on the foetus (teratogenic or embryocidal or other) and there are no controlled studies in women or studies in women and animals are not available. Drugs should be given only if the potential benefit justifies the potential risk to the foetus. As you can see it can be given only when benefits outweigh the risks, and definitely it should be not be taken more than one. Good news is in your case it has not affected your baby as suggested by your ultrasound report. I advice you to be very regular to your doctor and hope for the best. Eat nutritious diet and taje adequate rest. Dont take any medications with out your doctor knowledge. Regards Dr Santosh