19 side effects
| Side effect | Frequency | NHS |
|---|---|---|
| Nausea | very common | Feeling sick (nausea) |
| Headache | very rare | Headaches, having trouble focusing, having memory problems, cannot think clearly, having a seizure or fit, or losing your balance |
| Insomnia | common | Being unable to sleep |
| Diarrhea | common | Diarrhoea |
| Fatigue | common | Feeling tired or weak |
| Weight gain | rare | Gaining weight |
| Weight loss | rare | Losing weight |
| Menstrual changes | rare | Changes in periods such as heavy bleeding, spotting, or bleeding between periods |
| Euphoria | rare | Feelings of overwhelming happiness (euphoria), excessive enthusiasm or excitement, or a feeling of restlessness |
| Gum bleeding | rare | Bleeding from the gums or getting bruises that appear without a reason or that get bigger |
| Hematuria | rare | Coughing up blood, or having blood in your pee |
| Gastrointestinal bleeding | rare | Having black or red poo, or blood in your vomit |
| Chest pain | very rare | Chest pain or pressure, or shortness of breath |
| Dizziness | very rare | Severe dizziness or passing out |
| Prolonged erection | very rare | Painful erections that last longer than 2 hours |
| Cognitive impairment | very rare | Headaches, having trouble focusing, having memory problems, cannot think clearly, having a seizure or fit, or losing your balance |
| Suicidal thoughts | very rare | Thoughts about harming yourself or ending your life |
| Erectile dysfunction | — | Sexual side effects, such as problems getting an erection or a lower sex drive |
| Decreased libido | — | Sexual side effects, such as problems getting an erection or a lower sex drive |
2 additional sourcesdidn't return structured side-effect data: Mayo Clinic, MedlinePlus.