It's crucial to adhere to the dosage and instructions provided by your healthcare professional while taking tadalafil.
If you possess a private prescription for tadalafil, ensure to thoroughly review the accompanying documentation, as the dosage and formulation can vary.
Dosage and strength
Tadalafil tablets are available in the following strengths: 2.5mg, 5mg, 10mg, and 20mg.
Dose for erectile dysfunction
To manage erectile dysfunction, a standard starting dose of tadalafil is typically 10mg taken approximately 30 minutes prior to sexual activity. Do not take more than 1 tablet within a 24-hour period.
Your healthcare provider may adjust your prescribed dose based on your body's response and any side effects you experience.
Please note that tadalafil can remain effective for more than 24 hours, so taking the higher 10mg or 20mg doses every day is unnecessary and discouraged.
To ensure optimal effectiveness, sexual arousal is necessary for tadalafil to facilitate its intended effects.
Dose for benign prostate enlargement
For the treatment of benign prostate enlargement, tadalafil is typically prescribed at a strength of either 2.5mg or 5mg, with 5mg being the most common once-daily dosage.
If you are managing both benign prostate enlargement and erectile dysfunction, your total dosage should still remain at 5mg.
Dose for pulmonary hypertension
In cases of pulmonary hypertension, a typical initial dose is 20mg, usually prescribed as two 10mg tablets taken once every day.
The maximum dosage of tadalafil for this condition is generally 40mg daily—this consists of two 20mg tablets.
If you have liver or kidney issues, your healthcare provider may start you on a lower dose, such as 10mg or 20mg, to better monitor your response.
You should swallow each tablet whole with a sufficient amount of water or juice, ensuring to avoid grapefruit juice.
When using tadalafil for erectile dysfunction, consume one tablet at least half an hour before planned sexual activity.
In the case of benign prostate enlargement, you may take it at any point throughout the day, but consistency is key, so try to take it at the same time each day for best results.
Please take note that the tablets prescribed for pulmonary hypertension can be considerably larger in size, which may present difficulties for some individuals during swallowing.
If you forget to take it
If you forget to take your prescribed dose of tadalafil:
- For benign prostate enlargement: Take the missed dose as soon as you recall, then continue with your regular schedule.
- For pulmonary hypertension: If you remember within 8 hours of the missed dose, take it immediately; otherwise, skip the missed dose and continue as usual.
Never take two doses simultaneously, nor should you attempt to make up for missed doses by taking extra.
If you find yourself frequently forgetting doses, consider setting reminders or seeking additional methods from a healthcare professional or pharmacist to assist in adherence to your medication schedule.
If you take too much
Taking an excess amount of tadalafil could lead to a variety of side effects, which may include:
- Headaches
- Dizziness
- Indigestion
- Nasal congestion
- Visual disturbances (e.g., blurred vision)
Immediate action required: Contact 111 right away if:
- You suspect you have taken more than your prescribed dose of tadalafil.
For guidance, visit 111.nhs.uk or call 111 directly.
Note:
If a visit to A&E is necessary, do not attempt to drive yourself. Arrange for someone to accompany you or consider calling an ambulance.
Make sure to bring the tadalafil packaging or patient leaflet, any unused tablets, and a comprehensive list of all other medications you are currently taking.