Before taking Viagra, discuss your health with a provider, especially if you have heart problems or take nitrates for chest pain, as the combination can cause a dangerous drop in blood pressure . Common side effects may include headaches, flushing, or an upset stomach.
: The standard starting dose is 50 mg , but a doctor may adjust this to 25 mg or a maximum of 100 mg per day . You should never take more than one dose in a 24-hour period . buy viagra online from pfizer
: Authentic Viagra is produced by Pfizer . If a site claims to sell "Pfizer Viagra" without a prescription or at suspiciously low prices, it is likely counterfeit and potentially dangerous . Key Information About Viagra Before taking Viagra, discuss your health with a
To legally and safely obtain Viagra, you must follow a process that involves a healthcare professional: You should never take more than one dose in a 24-hour period
: Viagra is a prescription-only medication . You must consult with a licensed doctor—either in person or through a reputable telehealth service—who can evaluate if the medication is safe for you based on your medical history and other medications you may be taking .
For official product details and safety information, you can visit the or consult the Mayo Clinic's guide to ED medications .
: Only purchase from pharmacies that require a valid prescription. Look for the Digital Pharmacy Accreditation (formerly VIPPS) or check the FDA's BeSafeRx for guidance on identifying safe websites.