Viagra is primarily designed to treat erectile dysfunction in men, but what happens if a woman takes Viagra? While it doesn't have the same effect as in men, it may increase blood flow to female genital areas, potentially enhancing sensitivity and arousal. Some studies suggest it could help women with sexual dysfunction, but results vary. Side effects may include headaches, flushing, and dizziness. Since Viagra isn’t FDA-approved for women, it’s best to consult a doctor before trying it.