July 1996 in “Annals of Internal Medicine” Taking high doses of fluconazole for a long time can cause reversible hair loss.
233 citations
,
July 1997 in “PubMed” High levels of ornithine decarboxylase can cause tumors in mouse skin.
36 citations
,
July 1980 in “Journal of Toxicology and Environmental Health” High doses of ethynylestradiol in rats caused growth issues, organ changes, and some tumors, but didn't increase overall tumor rates.
21 citations
,
February 1988 in “Toxicology” High doses of TCB cause severe health issues in marmoset monkeys.
17 citations
,
January 2012 in “IOSR Journal of Environmental Science Toxicology and Food Technology” High doses of Tridax procumbens extract can be toxic, affecting liver and kidneys.
June 2023 in “Al-Mağallaẗ al-ʻirāqiyyaẗ li-l-ṣaydalaẗ” High doses of rosemary extract can harm developing offspring and should be avoided during pregnancy and lactation.
January 1982 in “Side effects of drugs annual” High doses of certain vitamins can cause serious side effects and health risks.
June 2021 in “Current developments in nutrition” High doses of finasteride lower cholesterol and body weight in certain mice.
11 citations
,
July 2018 in “AJGP” Low-dose oral minoxidil effectively reduces hair loss in women with female pattern hair loss.
1 citations
,
September 2007 in “European journal of paediatric neurology” Low dose valproic acid treatment caused hair loss in a young patient.
1 citations
,
April 1961 in “OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)” Radiation affects plant growth differently, with high doses being harmful, but some lower doses can increase yield.
9 citations
,
October 2018 in “Journal of Cosmetic Dermatology” Isotretinoin at a low dose for three months does not significantly affect hair growth.
3 citations
,
January 1994 in “Toxicological Sciences” Finasteride causes abnormal growth in male mice cells at high doses.
9 citations
,
January 2007 in “mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich)” Microbeam radiation therapy's dose distribution changes with depth.
105 citations
,
January 2009 in “Medicine” Hirsutism is more linked to high androgen levels than acne or hair loss, and a mix of hormonal tests is best for diagnosis; certain treatments can reduce symptoms.
12 citations
,
January 2011 in “Dermatologic Surgery” Retinoids can prevent skin cancer in high-risk people but have side effects and require more research on dosing and effectiveness.
16 citations
,
August 2007 in “Histopathology” A woman's rare adrenal tumor caused high testosterone and cortisol levels, which normalized after the tumor was removed.
February 2006 in “Mayo Clinic Proceedings” Finasteride reduces prostate cancer risk but may increase high-grade cancer cases.
127 citations
,
June 2008 in “British Journal of Clinical Pharmacology” Low doses of some substances can be beneficial, while high doses can be harmful or toxic.
3 citations
,
March 2022 in “Journal of Infection” Infectious virus was not found after the third remdesivir dose, suggesting early end of isolation is possible.
1 citations
,
May 2001 in “Pharmacology & Toxicology” Cyproterone acetate may cause liver cancer at high doses, but is considered safe at recommended doses for approved uses.
February 2025 in “Biomolecules” Melatonin can help or hinder hair growth depending on the dose.
67 citations
,
February 1997 in “Teratology” Finasteride, when given in high oral doses to pregnant monkeys, caused genital abnormalities in male fetuses, but not in female fetuses or those exposed to intravenous finasteride.
19 citations
,
January 2009 in “Journal of Young Pharmacists” Alcoholic extract of Eclipta alba may help treat allergies and is safe at high doses.
14 citations
,
November 2008 in “Expert opinion on drug metabolism & toxicology” Finasteride helps treat prostate issues and may prevent prostate cancer in high-risk men.
4 citations
,
November 2018 in “Endocrinology, Diabetes & Metabolism Case Reports” GnRH analogue can help diagnose ovarian causes of high testosterone in postmenopausal women when scans don't show the cause.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Ficus platyphylla leaf extract is likely safe in high doses, with minor temporary side effects.
December 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Ficus platyphylla leaf extract is likely safe in high doses for rats.
22 citations
,
January 2002 in “Treatments in endocrinology” Birth control pills help treat skin and hair growth problems linked to high male hormone levels.
May 2025 in “Birth Defects Research” YWS1903 is safe for pregnant rats at moderate doses but causes fetal issues at high doses.