Take tadalafil at around the same time every day. Some people buy tadalafil online without a prescription. Some platforms have a digital pharmacy that ships the medication to your home, while others send an electronic prescription to your local pharmacy. Ask your pharmacist for a list of the ingredients. Shipping: Discreet, fast shipping is a must. People taking nitrates like nitroglycerin Nitrostat or isosorbide mononitrate Imdur should not take PDE5 inhibitors, as doing so could result in a dangerous drop in blood pressure.Tadalafil (Cialis) is one of the most popular erectile dysfunction (ED) drugs. Its major appeal? The drug comes in low-dose versions that can be taken daily. This means you can have sex at any time, rather than needing to take a pill from time to time as needed like other ED brands. The starting dose for daily-use Cialis is milligrams (mg). Our medical team can give you a prescription for sildenafil 20mg. The Lemonaid . headache. indigestion. back pain. muscle pain. flushing. stuffy nose. Patients who get back pain and muscle aches usually get them 12 to 24 hours after taking Cialis and these usually go away by.