Adhering to your healthcare professional's instructions is vital when using tadalafil.
If you are prescribed tadalafil, ensure you thoroughly read the provided literature, as both the strength and dosage may differ based on individual circumstances.
Dosage and strength
Tadalafil is available in various strengths, specifically 2.5mg, 5mg, 10mg, and 20mg tablets.
Dose for erectile dysfunction
The standard, commonly prescribed dosage for erectile dysfunction is typically 10mg, to be taken as needed. Ensuring that you do not exceed one tablet in a 24-hour period is critical.
Your healthcare provider might modify your dosage in accordance with your individual response and the frequency of use.
The effects of tadalafil can last for up to 36 hours. Therefore, daily dosages of either 10mg or 20mg are not usually advised.
For effectiveness, sexual arousal is required when taking tadalafil.
Dose for benign prostate enlargement
In cases of benign prostate enlargement, the lower doses of 2.5mg or 5mg are commonly prescribed, to be taken once daily.
If you are managing both erectile dysfunction and benign prostate enlargement, the recommended dose remains at 5mg.
Dose for pulmonary hypertension
When treating pulmonary hypertension, the dosage of tadalafil is generally provided in 20mg tablets.
The standard dose for this condition is 40mg, which usually consists of taking two 20mg tablets once daily.
For patients dealing with liver or kidney issues, doctors may consider initiating treatment at a reduced dosage of either 10mg or 20mg.
Swallow the tablets whole with either a glass of water or juice, but avoid grapefruit juice as it may interfere with the medication.
For erectile dysfunction, it is advisable to take one tablet at least 30 minutes prior to any planned sexual activity.
In terms of prostate enlargement, the tablet can be taken at any time, however, maintaining a consistent schedule—ideally at the same time each day—is essential.
Be aware that tadalafil tablets prescribed for pulmonary hypertension are larger and may pose difficulties for some individuals to swallow.
If you forget to take it
If you miss a dose:
- For benign prostate enlargement – take the missed dose right away upon remembering, and then continue with your usual schedule.
- For pulmonary hypertension – take it within 8 hours of the missed dose. If more than 8 hours have elapsed, skip that dose and proceed with your usual schedule.
Taking two doses at once is strictly prohibited, and you should not attempt to make up for missed doses.
If you find yourself frequently forgetting doses, consider setting an alarm or discussing reminder tools with your pharmacist.
If you take too much
Overdosing on tadalafil could lead to various side effects, including:
- headaches
- dizziness
- indigestion
- nasal congestion
- visual disturbances such as blurred vision
Urgent advice: Contact your healthcare provider immediately if:
- you have exceeded the prescribed dosage of tadalafil
For immediate assistance, visit 111.nhs.uk or call 111.
Important notice:
In the event of a medical emergency, do not attempt to drive yourself. Have someone else drive you or call for assistance via ambulance.
Be sure to bring the tadalafil packaging, any remaining pills, and a complete list of any other medications you are currently taking.