Cialis or generic equivalent only. PRN use: 10 mg PO initially before sexual activity, with or without food; may be increased to 20 mg or reduced to 5 mg on basis of efficacy and tolerability; in most patients, maximum dosing frequency is once daily. Once-daily use: 2.5 mg/day PO in single daily dose, without regard to timing of sexual activity, with or without food; may be increased to 5 mg. The most common side effects with Cialis are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Men who get back pain and muscle aches usually get it 12 to 24 hours after taking Cialis. Back pain and muscle aches usually go away within 2 days. Call your healthcare provider if you get any side effect that. Cialis is also used to treat the signs and symptoms of benign prostatic hyperplasia (BPH). Cialis is available as a lower-strength tablet that can be taken on a daily basis, eliminating the need to 'plan' for sex. Cialis is also available as an 'as needed' tablet. The effect of one tablet lasts for up to 36 hours. I’ve taken Cialis for 9 years and was definitely curious to see if. So basically all the doctors prescribing BlueChew medications are licensed, medical providers. It’s hard to verify this without ordering many doses from every state, so I’m going to take their word for it. Since the quality of their medication is pretty good, I don’t think they’d skimp in other areas either. The. Cialis (tadalafil) is an erectile dysfunction medicine used to treat impotence (the inability to attain or maintain a penile erection) and benign prostatic hyperplasia (BPH). Common side effects of Cialis include facial flushing, headaches, stomach upset, diarrhea, flu-like symptoms, and nausea. Cialis should be used cautiously in patients with bleeding disorders or active ulcers. Common or very common adverse effects of phosphodiesterase-5 (PDE-5) inhibitors include back pain, dyspepsia, flushing, migraine, myalgia, nasal congestion, dizziness, nausea, and vomiting. Uncommon but serious adverse effects of PDE-5 inhibitors include: Visual disturbances, including non-arteritic anterior ischaemic optic neuropathy (NAION).