Yes.
In the circumstances you describe there’s nothing improper with purchasing available non-prescription products covered as a free benefit under an authorized health insurance plan, and them using or sharing them in any way you choose. Legally it’s a non issue, and as a healthcare consumer you’re protected under the Health Insurance Portability and Accountability Act of 1996 (HIPAA)
https://www.hhs.gov/hipaa/for-professionals/privacy/laws-regulations/index.html
“The Privacy Rule protects all individually identifiable health information held or transmitted by a covered entity or its business associate, in any form or media, whether electronic, paper, or oral.
“Individually identifiable health information is information, including demographic data, that relates to:
• The individual’s past, present or future physical or mental health or condition,
•The provision of health care to the individual, or
•The past, present, or future payment for the provision of health care to the individual.
But beyond that, the best advice for anyone looking for accurate, reliable, and truthful info on healthcare or any other subject is just avoid online forums.
After 20 years sites like Facebook, Twitter, Redit, Quora and others have multiplied collective human stupidity X 10.