01Is back pain a Levitra first-line effect?
Back pain cleared Table 1 at 2 percent versus a lower placebo rate, and it sits on the patient leaflet list. It is not the first row. Headache and flush are.
Tadalafil's later-onset myalgia story is a different insert. Do not paste a 12-to-24-hour Cialis ache onto this 20 mg page.
02Does 20 mg make headache more likely than 10 mg?
The insert says placebo-controlled trials suggested a dose effect in headache, flushing, dyspepsia, nausea, and rhinitis over 5, 10, and 20 mg. It does not print a separate 20 mg-only percent on that sentence.
If 10 mg already dominated the night with headache, stepping to 20 mg is likely to buy more of the same. If 10 mg was quiet and still weak, 20 mg is the labelled ceiling step.
03What sits at the top of Table 1?
Table 1 pooled 2203 men on Levitra and 1199 on placebo in fixed- and flexible-dose trials of 5, 10, or 20 mg. Headache 15 versus 4 percent. Flushing 11 versus 1 percent. Rhinitis 9 versus 3 percent. Dyspepsia 4 versus 1 percent.
Dizziness, nausea, back pain, sinusitis, flu syndrome, and increased creatine kinase also cleared the 2 percent bar and were more common on drug than placebo. This page stays on the two that lead the list.
04How often did men stop the tablet for side effects?
Discontinuation because of adverse events was 3.4 percent on Levitra and 1.1 percent on placebo in the placebo-controlled trials. Most men who reported headache or flush did not leave the trials for that reason.
A man who already abandoned 10 mg for a pounding headache should not be talked into 20 mg as a 'real try'. The ceiling tablet is for a clean 10 mg that was still weak.
05When is a flush not the listed flush?
Sudden chest pain, fainting, or an erection past four hours is not a Table 1 flush. Those nights are emergency care. Nitrates stay contraindicated even if the man thinks he is 'just flushed'.
Sudden vision loss or sudden hearing drop, sometimes with tinnitus and dizziness, are stop-and-call rows. They are not treated as ordinary flush.
06How long do those effects usually last?
The patient-information leaflet says headache, flushing, stuffy or runny nose, indigestion, upset stomach, dizziness, or back pain usually go away after a few hours. Call the clinician if a side effect bothers you or will not go away.
That 'few hours' line is counseling language, not a second half-life. The 4-to-5-hour plasma half-life sits on the half-life probe.