It's important to take this medicine as advised by a qualified healthcare provider, whether that is a doctor or pharmacist familiar with your health history.
If you possess a private prescription for tadalafil, it is essential to thoroughly read the accompanying information that comes enclosed with your medication. Please note that the strength and specific dosage instructions may vary, so personal attention to these details is crucial for effective treatment.
Dosage and strength
Tadalafil is available in various strengths: 2.5mg, 5mg, 10mg, and 20mg tablets, allowing customization based on individual needs.
Dose for erectile dysfunction
The standard dose of tadalafil for erectile dysfunction typically begins at 10mg as needed. It is important to adhere to the guideline of not exceeding more than one tablet within a 24-hour period.
Your healthcare provider may adjust your dosage upwards or downwards based on your response to the medication and the frequency of your intake.
Keep in mind that the effects of tadalafil can last longer than 24 hours, so it is generally not advisable to take the 10mg or 20mg tablets on a daily basis.
For optimal results, it is necessary to be sexually aroused for the tablet to work effectively, as it does not function automatically.
Dose for benign prostate enlargement
When prescribed for benign prostate enlargement, tadalafil is available in 2.5mg or 5mg formulations, with the usual dosage set at 5mg, ideally taken once per day for consistent results.
If you’re simultaneously being treated for both benign prostate enlargement and erectile dysfunction, the dosage remains at 5mg.
Dose for pulmonary hypertension
For those dealing with pulmonary hypertension, tadalafil is typically available in 20mg tablets.
The common starting dose is 40mg, which corresponds to taking two 20mg tablets, administered once daily for optimal effect.
If you suffer from kidney or liver disorders, your healthcare provider may consider reducing the initial dose to either 10mg or 20mg to mitigate potential side effects.
Make sure to swallow the tablets whole, accompanied by a glass of water or juice, although grapefruit juice should be avoided as it can interact negatively with the medication.
When taking tadalafil for erectile dysfunction, it is best to consume 1 tablet at least 30 minutes prior to engaging in sexual activity for the best efficacy.
For those using tadalafil to manage prostate enlargement, the tablet can be ingested either in the morning or the evening, but consistency is key, so aim to take it at the same time every day.
Please note that tadalafil tablets intended for pulmonary hypertension are larger in size and may pose some difficulty during swallowing, so take care to ensure you are comfortable.
If you forget to take it
Should you forget to take your medication:
- For benign prostate enlargement – take your dose as soon as you remember, and then continue with your usual schedule.
- For pulmonary hypertension – if it is within 8 hours of your missed dose, take it immediately. If it is later than 8 hours, skip the missed dose and proceed with your next dose at your regular time.
It is imperative that you never take two doses simultaneously, nor should you attempt to compensate for a missed dose by taking an extra one.
If you find that you frequently forget to take your doses, consider setting an alarm as a reminder. Additionally, you can consult a pharmacist for supplementary strategies to help you remember to take your prescribed medicine.
If you take too much
Taking an excessive amount of tadalafil can lead to various side effects, which may include:
- persistent headache
- dizziness or lightheadedness
- digestive discomfort such as indigestion
- nasal congestion or stuffy nose
- visual disturbances, including blurred vision
Urgent advice: Contact 111 for immediate advice if you experience any of the following:
- you consume more than your prescribed dosage of tadalafil
Visit 111.nhs.uk or make a call to 111 for assistance.
Important information:
If you find it necessary to visit A&E, do not attempt to drive yourself. Please arrange for someone else to drive you or call 999 to request an ambulance for your transport.
Bring the tadalafil packaging or informational leaflet along with you, as well as any leftover medication and a list of any additional medications you are taking.