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If this dose is highly effective, subsequent doses could be reduced to 5mg on a trial basis. If repeated trials of a 10mg dose prove ineffective, the dose can be increased to 20mg. Cialis® is not definitively linked to these side effects, which have only been reported in rare cases and could potentially result from other medications or health conditions as well. If you experience any of the above, consult a healthcare provider immediately. Viagra® (generically known as&nbsp