It’s crucial to follow the guidance provided by your healthcare professional regarding this medication. Tadalafil should be taken exactly as prescribed by your doctor or pharmacist for safe and effective use.
If you are using a private prescription for tadalafil, be diligent in reviewing the accompanying information that comes with your medication. Note that the strength and dosage instructions can differ, necessitating your careful attention to ensure proper administration.
Dosage and strength
Tadalafil is available in several strengths: 2.5mg, 5mg, 10mg, and 20mg tablets. The appropriate dosage typically depends on the condition being treated.
Dose for erectile dysfunction
For erectile dysfunction, the usual starting dose is 10mg, taken as needed. Importantly, do not exceed more than 1 tablet in a 24-hour period.
Your healthcare provider may adjust your dose based on individual response and tolerability, which reflects the personalized nature of treatment.
Effects of tadalafil can persist for longer than 24 hours; hence, it's advised against taking 10mg or 20mg tablets daily.
For optimal effectiveness, sexual stimulation is necessary for the tablet to work efficiently.
Dose for benign prostate enlargement
When prescribed for benign prostate enlargement, tadalafil is typically available in 2.5mg or 5mg tablets. The standard dose is commonly 5mg, taken once daily.
For patients concurrently being treated for both benign prostate enlargement and erectile dysfunction, the combined dosing remains at 5mg.
Dose for pulmonary hypertension
In the context of pulmonary hypertension, tadalafil is prescribed in 20mg tablets.
The usual dosage is 40mg, which consists of taking two 20mg tablets once per day.
If you have pre-existing kidney or liver issues, your doctor may reduce your initial dosage to either 10mg or 20mg to ensure patient safety.
Swallow the tablets whole with a drink of water or juice; however, avoid grapefruit juice as it may interact adversely.
For erectile dysfunction, it’s recommended to take 1 tablet at least 30 minutes prior to intended sexual activity.
When taking tadalafil for prostate enlargement, you may choose to take the tablet either in the morning or evening; however, aiming for consistency by taking it at the same time daily is optimal.
Tadalafil tablets used for pulmonary hypertension may be larger in size and could pose a challenge to swallow for some patients.
If you forget to take it
In instances of missed doses:
- For benign prostate enlargement – take the missed dose as soon as you remember unless it’s almost time for your next dose; in this case, skip it and resume your usual schedule.
- For pulmonary hypertension – it is crucial to take the missed dose within 8 hours if possible; however, if you realize after this time frame, skip the missed dose and proceed with your next scheduled dose.
Never attempt to take two doses simultaneously to compensate for a forgotten one. Adherence to the prescribed dosing schedule is vital for safety and effectiveness.
If you find yourself frequently forgetting doses, consider setting an alarm as a reminder. Additionally, consulting your pharmacist for further strategies to enhance medication adherence could prove beneficial.
If you take too much
Exceeding the recommended dosage of tadalafil can lead to several adverse effects, which may include:
- headache
- dizziness
- indigestion
- congestion in the nasal passages
- visual disturbances (such as blurry vision)
Urgent advice: Contact 111 for immediate assistance if:
- you have ingested more than your prescribed dose of tadalafil.
For further information, visit 111.nhs.uk or call the emergency services at 111.
Important information:
Should you require emergency medical assistance, refrain from driving yourself. Seek assistance from someone who can drive you, or call 999 to request an ambulance.
When going to A&E, remember to bring along the tadalafil packaging or leaflet, along with any remaining tablets and a list of other medications you are currently taking.