If you experience chest pain, dizziness, or nausea during sexual activity, call your doctor immediately and avoid sexual activity until your doctor tells you otherwise. If you are taking sildenafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or increase sexual desire. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help. You may take this medicine with or without food. Box , Mission, KS If your pharmacy does not participate, you may be able to submit a request for a rebate in connection with this Savings Offer. As in the other titration studies, patients were started on 50 mg and allowed to adjust the dose up to mg or down to 25 mg of VIAGRA; all patients, however, were receiving 50 mg or mg at the end of the study.AdFree 2-day Shipping On Millions of Items. No Membership Fee. Shop Now! has been visited by 1M+ users in the past month. Cialis lasts up to 36 hours in the body, while Viagra lasts 4–6 hours in the body. Both are taken 30 minutes before sex. Cialis can cause limb pain, while Viagra can cause vision change, rash. AdTrust Our Unbiased Reviews and Improve Your Sexual Health in Confidence! Take Charge of Your Sexual Health with Our Top-Rated Male Enhancement Products! has been visited by 10K+ users in the past monthHonest & Unbiased Reviews · Over Products Tested · Over 20 Years Online.