In short

  • Cialis (Tadalafil) is a medication used to treat erectile dysfunction.
  • There are two types of Cialis available, Cialis Daily and standard Cialis.
  • Cialis Daily vs Cialis

Cialis (Tadalafil) is a medication used to treat erectile dysfunction. It is classed as a PDE5 inhibitor, meaning that it relaxes the blood vessels to increase blood flow. As good blood flow is required to achieve an erection, Cialis enables people living with erectile dysfunction to obtain and sustain an erection, adequate for sexual penetration.

There are two types of Cialis available, Cialis Daily and standard Cialis. Cialis Daily is available in 2.5mg and 5mg doses and should be taken every day. This should allow you to obtain spontaneous erections as required. Alternatively, you can take Cialis, which is available in 10mg and 20mg doses. This would suit men who have less regular sex, or who have intermittent bouts of erectile dysfunction. It is recommended that first time users take a 10mg dose of Cialis or a 2.5mg dose of Cialis Daily. If you do not find these dosages effective, you may be able to increase your dosage to 5mg of Cialis Daily or 20mg of Cialis. If after changing your dosage, you still do not experience the desired effects, you could change to a different type of erectile dysfunction medication, such as Viagra, Levitra or Spedra. If you are unsure which brand to take, you could try an ED Trial Pack to find out which treatment suits you best.

Sources

References

3 sources were selected to match the subject of this article. Link destinations were checked twice when added. This does not mean every statement has been individually source-mapped or clinically approved.

  1. Tadalafil 5 mg film-coated tablets — Summary of Product Characteristics

    electronic medicines compendium (emc) · HTML · UK regulated product information · Link destination checked 5 September 2026

  2. Cialis 20 mg film-coated tablets — Summary of Product Characteristics

    electronic medicines compendium (emc) · HTML · UK regulated product information · Link destination checked 5 September 2026

  3. Tadalafil

    NHS · HTML · official medicine guidance · Page last reviewed 13 May 2026 · Link destination checked 5 September 2026

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Who wrote this

Written and reviewed by our team

Authored by

Ian Coakley, Content Writer

Content Writer

Ian is Simple Online Pharmacy’s Content Writer; he joined the team in 2021. He has had a varied career path, starting as a science communicator and freelance editor and writer. While Ian has been published in some independent outfits, Simple Online Pharmacy marks his first foray into writing for a corporate entity.

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Medically reviewed by

Karim Nassar, Co-Founder, Pharmacist & Author

Karim Nassar

Co-Founder, Pharmacist & Author

Karim is a registered pharmacist with the General Pharmaceutical Council (GPhC) and was a founding member of Simple Online Healthcare in 2015. With a Master of Pharmacy degree from Strathclyde University, Karim brings a strong foundation in pharmaceutical care and a passion for leveraging digital solutions to improve patient access to healthcare.

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Sources cited

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