It’s available in 25 mg, 50 mg, and mg tablets and lasts up to 18 hours. This information is reviewed by a licensed practitioner who will assess your eligibility for the medication. These PDE5 inhibitors may cause headache, flushing, drop in blood pressure, or other adverse effects. Psychological factors like stress, depression, or anxiety can also contribute. A phone or video consultation is sometimes required for legal purposes. The generic versions are just as effective and much less expensive.Americans have discovered the advantages of ordering medication online from Canada, and if you want to order Cialis from Canada too then you should. The fact is that drugs cost . Can you legally buy Cialis online? Yes, it is legal to purchase Cialis online. However, people should only use reputable telehealth companies and online pharmacies. Medical Consultation Required: Yes Medications Prescribed: Viagra, Cialis, sildenafil, tadalafil Generic offered: Yes Why We Chose It.