The conclusion is that hair supplement ingredients may be unsafe and should be disclosed and proven safe before use.
March 2021 in “Clin-Alert” The FDA warned about safety issues with remdesivir and tofacitinib, finasteride is linked to suicidality, potent topical corticosteroids increase osteoporosis risk, henna can cause hemolysis in G6PD deficiency, chemotherapeutic agents can cause adverse reactions, drug interactions are common in cancer patients, ketamine can reduce at-risk drinking, high dose of anticholinergics increases dementia risk in Parkinson's patients, and prenatal exposure to second-generation antipsychotics increases pregnancy complications.
October 2025 in “International Journal of Innovative Research in Technology” Personalized supplements are important for women's health, but hormone therapy can increase cancer and heart risks.
April 2019 in “Endocrinology and Metabolism Clinics of North America” Inclusive and affirming healthcare is essential for improving transgender individuals' quality of life and health.
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October 2007 in “Andrologia” DHT is a strong androgen that may pose less risk to the prostate compared to testosterone.