When estrogens are used for a prolonged period, they may cause adverse effects. Some of them are:
- Headache.
- Breast discomfort.
- Dizziness and vomiting.
- Gastrointestinal alterations and gas.
- Hair growth.
- Changes in sexual desire.

Although these adverse reactions are the most frequent, estrogen drugs can also cause more severe side effects such as loss of appetite, weakness, hives, abdominal swelling, joint pain, etc.
For all these reasons, like the administration of other types of drugs, estrogens must always be applied under medical prescription and following their instructions.
Read the full article on: What are Estrogens? Types, Functions and Drugs ( 25).

Silvia Azaña Gutiérrez
B.Sc., M.Sc.
Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics.
License: 3435-CV