Undesirable Effects
Stop taking Grinhals® and consult immediately your doctor if you experience:
- signs of intestinal bleeding, such as bright red stools, black tarry stools, vomiting blood or dark particles that look like coffee grounds;
- signs of a severe allergic reaction, such as severe skin rash, peeling, flaking or blistering of the skin, swelling of the face, unexplained wheezing, shortness of breath, or unusual bruising.
Tell your doctor if you experience any of the following side effects, if they become worse, or if you notice any side effects not listed in this leaflet.
Common (may affect up to 1 in 10 people):
- indigestion, stomach discomfort or pain, nausea, vomiting, flatulence, diarrhoea, constipation, and minor gastrointestinal blood loss which may, in rare cases, lead to anaemia.
Uncommon (may affect up to 1 in 100 people):
- hypersensitivity reactions including urticaria, itching and asthma attacks (with a fall in blood pressure);
- central nervous system disorders such as headache, dizziness, difficulty sleeping, agitation, irritability or tiredness;
- visual disturbances;
- stomach or intestinal ulcers, sometimes with bleeding and perforation, gastritis, inflammation of the mouth with ulceration (ulcerative stomatitis), worsening of colitis and Crohn’s disease;
- various skin rashes.
Rare (may affect up to 1 in 1,000 people):
- tinnitus (ringing in the ears);
- insomnia, nervousness, anxiety, restlessness, tremor and hallucinations;
- worsening of asthma or hypersensitivity reactions with shortness of breath;
- damage to kidney tissue (papillary necrosis) and increased blood uric acid levels.
Reporting of side effects
If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via INFARMED, I.P.
By reporting side effects, you can help provide more information on the safety of this medicine.
This website is intended exclusively for residents of Portugal.
Date of Summary of Product Characteristics (SmPC) approval: 21 June 2023.
Last revision: 24 November 2023.