Can I buy ED pills online? However, some states require a live video consultation. Many men want to know how to get prescription ED pills without a doctor or other medical professional. Your primary care doctor should always know what medications you’re taking, including ED pills prescribed by another provider. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety.Cialis (tadalafil) and Viagra are both used for erectile dysfunction, but there are a couple of distinctions between the two. Unlike Viagra, low-dose tadalafil can be taken on a daily basis, allowing for more spontaneity. What’s more, a single dose of tadalafil lasts up to 36 hours, whereas a dose of Viagra only lasts for around four hours. 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 include . AdComplete the Online Consultation with our Doctor. Personalize Your Needs. If Appropriate, Get a Prescription for ED from RexMD®. Free Shipping Available10K+ visitors in the past monthFree Shipping · Real Doctors · Discreet Packaging · Personalized Plan.