BlueChew is not available for women. The service exclusively prescribes medications to males over 18 in the United States, and the active ingredients in BlueChew (sildenafil and tadalafil) are not FDA-approved for treating sexual dysfunction in women. That said, these same compounds do have measurable effects on female sexual physiology, which is likely why this question comes up so often. Here’s what the science actually shows and what options do exist for women.
Why BlueChew Only Targets Men
BlueChew delivers the same active ingredients found in Viagra and Cialis through a telehealth subscription. These drugs are called PDE5 inhibitors, and they work by relaxing blood vessels and increasing blood flow to the genitals. In men, that mechanism directly addresses the core problem behind erectile dysfunction: not enough blood reaching the penis to create or maintain an erection.
Female sexual dysfunction is more complex. It falls into at least two distinct categories: desire problems (not wanting sex) and arousal problems (wanting sex but struggling with the physical response). PDE5 inhibitors can only address the second category, because they affect blood flow, not desire. Since the most common form of female sexual dysfunction is low desire rather than a blood flow issue, these drugs don’t solve the primary problem most women face. That mismatch is a big reason the FDA has never approved sildenafil or tadalafil for women, and why BlueChew doesn’t offer them to female patients.
What PDE5 Inhibitors Actually Do in Women’s Bodies
Even though these drugs aren’t approved for women, researchers have studied them in female subjects, and the results are genuinely interesting. Female genital arousal is partly a blood flow event. During sexual excitement, smooth muscle in the clitoris and vaginal walls relaxes, allowing blood to engorge those tissues. This process relies on the same chemical pathway (nitric oxide and a molecule called cGMP) that sildenafil targets in men. Researchers have confirmed that the enzyme sildenafil blocks, PDE5, is present in human clitoral tissue, meaning the drug has a biological target to act on.
In a double-blind, placebo-controlled study of 68 healthy women aged 19 to 38, sildenafil at 50 mg significantly improved arousal, orgasm, and sexual enjoyment compared to placebo. Another study using ultrasound imaging found that sildenafil increased blood flow to the clitoral artery in women, confirming the vasodilator effect on female genital tissue. A separate trial in premenopausal women with type 1 diabetes and arousal disorder also showed improvements with sildenafil.
Side effects in women mirror what men experience: headache, flushing, nasal congestion, nausea, visual changes, and digestive discomfort. These were generally mild or moderate. One serious side effect reported in trials was abnormally heavy menstrual bleeding. As with men, sildenafil is dangerous when combined with nitrate medications (such as nitroglycerin for heart conditions), because the combination can cause a severe drop in blood pressure.
Why Blood Flow Isn’t the Whole Picture
The research on sildenafil in women shows real physiological effects, so why hasn’t it led to an approved product? The core issue is that female sexual dysfunction usually isn’t a plumbing problem. The most common complaint is low sexual desire, not difficulty with the physical arousal response.
Hormonal shifts drive much of this. After menopause, lower estrogen levels reduce blood flow to the pelvis, decrease genital sensitivity, and lengthen the time needed to become aroused or reach orgasm. Hormonal changes after childbirth and during breastfeeding can cause vaginal dryness and suppress desire. Medical conditions like diabetes, heart disease, multiple sclerosis, and kidney failure can also contribute. Depression, relationship stress, and certain medications (especially antidepressants) play a role too.
A pill that increases blood flow to the genitals doesn’t address most of these causes. A woman with low desire who takes sildenafil might experience increased genital blood flow without any corresponding increase in wanting sex, which doesn’t solve the actual problem. This disconnect is why the comparison to “female Viagra” has always been misleading. Viagra works for men because erections are primarily a hydraulic event. Female sexual response involves a far more intertwined relationship between desire, arousal, hormones, and psychological factors.
FDA-Approved Options for Women
The disparity in available treatments is stark. Men have 26 FDA-approved treatments for sexual dysfunction. Women have had far fewer options, with the most notable being Addyi (flibanserin), approved in 2015 for premenopausal women with hypoactive sexual desire disorder, the clinical term for persistently low sexual desire that causes distress.
Addyi works completely differently from Viagra. Rather than increasing blood flow, it acts on brain chemistry. The exact mechanism isn’t fully understood even by its manufacturer, but it’s believed to influence serotonin and dopamine signaling in ways that gradually increase sexual desire. You take it as a daily pill at bedtime, not on demand before sex. It requires consistent daily use to build its effect, and it comes with restrictions: you can’t drink alcohol while taking it due to the risk of dangerously low blood pressure and fainting.
A second option, Vyleesi (bremelanotide), works through a different brain pathway and is taken as a self-administered injection about 45 minutes before anticipated sexual activity. Unlike Addyi, it’s used on demand rather than daily. Both drugs are intended specifically for desire problems, not arousal issues.
Neither drug has achieved anything close to the widespread use of Viagra. Addyi’s restrictions, modest effectiveness, and side effects have limited its adoption. The gap between men’s and women’s sexual health treatments remains wide, though some doctors do prescribe sildenafil off-label for women with specific arousal disorders, particularly those linked to diabetes or other vascular conditions where blood flow is a documented factor.
What This Means Practically
If you’re a woman who searched for BlueChew hoping to find a similar quick solution, the honest answer is that nothing equivalent exists yet. BlueChew won’t prescribe to you, and even if you obtained the same medications elsewhere, they would only help if your specific issue is physical arousal rather than desire. For most women with sexual dysfunction, the problem is more layered than what a blood flow medication can fix.
That said, the research does show these drugs have real effects on female arousal, so for certain women with specific arousal disorders, an off-label prescription from a provider who understands female sexual health could be worth discussing. The key is identifying whether the issue is desire, arousal, pain, difficulty reaching orgasm, or some combination, because the right approach depends entirely on the actual cause.