While each PDE5 inhibitor differs slightly, they’re very similar in treating erectile dysfunction. Other warning signs of an unsafe online pharmacy include outdated medication, no customer service, or suspiciously low prices. Most men start with and respond well to the 10 mg tadalafil dose. It’s available in 50 mg, mg, and mg tablets. Tadalafil requires a prescription.Tadalafil (Cialis) is taken by mouth either as needed before sexual activity or once daily for erectile dysfunction (ED). It’s also taken once daily to treat symptoms from an enlarged prostate (benign prostatic hyperplasia, or BPH). Tadalafil (Cialis) is available both as brand-name and generic tablets. Common side effects of this medication Missing: online order. The easiest way to get Cialis online is to purchase branded or generic tadalafil online from a reputable telehealth provider. Cialis mg tablet Cialis is taken orally. The dosage can be increased or decreased depending on the individual’s sustenance towards the drug and its effects. What precautions should I take before using Cialis? Before taking the medication, inform your doctor about any allergies you may have.