It was determined that the study should not continue as the study drug, Acetaminophen, could only be mixed in a solvent that would not allow the patients to be NPO prior to procedure.

The investigators are going to study the difference in postoperative pain control after administration of oral versus intravenous formulation of acetaminophen

Oocyte retrieval is an outpatient procedure that is a routine surgical intervention in the process of assisted reproductive technologies and oocyte banking. The perioperative pain control is achieved with multidrug regimen including intraoperative opioid medication and perioperative administration of oral or intravenous acetaminophen. This medication is more commonly known as Tylenol. Intravenous formulation of this medication is several fold more expensive and the data for perioperative pain control is mixed on the equivalence of pain control with intravenous versus oral acetaminophen in other fields. Currently there is no accepted standard of care and the two formulations are used interchangeably depending on primary physician's preference. We are conducting an equivalence placebo controlled randomized clinical trial to assess the difference in efficacy of these two formulations

Inclusion Criteria:

1. Provision of signed and dated informed consent form
2. Stated willingness to comply with all study procedures and availability for the duration of the study
3. Female, aged 18-45
4. Ability to take oral medication and be willing to adhere to the study intervention regimen

Exclusion Criteria:

1. Known clinically significant liver disfunction
2. Known allergic reactions to components of acetaminophen such as angioedema, anaphylaxis or other
3. Known current substance use disorder
4. Chronic pain syndrome
5. Weight less than 50 kg

the individual participant data will not be shared