Buying Cialis (tadalafil) online from unregulated sources is extremely dangerous.

1. Safety risks

- Counterfeit drugs: Many online platforms that sell Cialis without proper authorization may be peddling counterfeit medications. These counterfeits may not contain the correct active ingredient, may have incorrect dosages, or may be contaminated with harmful substances.

- Lack of medical supervision: When obtaining Cialis online without a prescription, there is no medical professional to assess whether the drug is appropriate for an individual's health condition. Cialis can interact with other medications and may be contraindicated in certain medical situations such as people with severe heart problems or those taking nitrates.

In many countries, Cialis is a prescription - only medication. It should be obtained through legal channels, such as a legitimate pharmacy with a valid prescription from a healthcare provider.