An overdose of progesterone capsules is recommended to be checked in the hospital. Side effects of taking progesterone include nausea, vomiting, dizziness, headache, breast swelling and pain, increased leukorrhea, vaginal spotting, weight gain or loss, etc. In severe cases, it can cause dizziness, overdose may cause these discomforts, and severe overdose may lead to abnormalities in liver and kidney functions. If a patient takes just slightly more progesterone capsules than the dose prescribed by the doctor, with no discomfort, he or she can go to the hospital for examination, and can go home for observation if there are no serious problems. Serious overdose need to seek medical attention as soon as possible, gastric lavage, or infusion to promote the metabolism of the drug, to reduce the damage to the body. Taking progesterone capsules has certain risks, it is recommended that the treatment under the guidance of a specialist.