If a woman takes BlueChew, she won’t experience anything dangerous in most cases, but the effects will be different from what men experience. BlueChew contains either sildenafil (the active ingredient in Viagra) or tadalafil (the active ingredient in Cialis), and neither is FDA-approved for use in women. That said, researchers have studied these drugs in women, and the results tell a nuanced story: some women notice real physical changes, while others feel almost nothing.
How It Works in a Woman’s Body
Sildenafil and tadalafil work by relaxing smooth muscle tissue and increasing blood flow. In men, that means more blood to the penis. Women have similar tissue in the clitoris and vaginal walls, and the same chemical pathway exists there. Research from Boston University School of Medicine confirmed that sildenafil significantly increases genital blood flow and vaginal lubrication in animal models, and that the clitoral tissue responds to the drug by relaxing its smooth muscle, both in strength and duration of the effect.
So the basic mechanism translates. The drug increases blood flow to the genitals, which can heighten physical sensitivity and natural lubrication. What it does not do is increase desire. This is a critical distinction, and it’s the main reason the drug works inconsistently in women.
What the Clinical Research Shows
A double-blind, placebo-controlled study published in The Journal of Urology tested sildenafil in women diagnosed with sexual arousal disorder. The results split sharply into two groups. Women whose primary issue was physical arousal (difficulty with lubrication, sensation, or reaching orgasm despite feeling desire) saw significant improvements across nearly every measure. Compared to placebo, these women were about 4 times more likely to report improved vaginal lubrication, over 4 times more likely to reach orgasm, and roughly 11 times more likely to rate their overall sexual experience as improved.
Lubrication specifically jumped from 64% reporting sufficient wetness on placebo to 82% on sildenafil. Improvements also showed up in arousal sensation and orgasm quality.
Women who had low desire alongside their arousal problems saw no meaningful benefit from sildenafil on any measure. This makes sense biologically: the drug increases blood flow in response to stimulation, but it cannot create the mental or emotional component of wanting sex in the first place. If the issue is “my body doesn’t respond even though I’m interested,” sildenafil may help. If the issue is “I’m not interested,” it won’t.
Physical Effects You Might Notice
A woman taking BlueChew would likely experience the same common side effects men report. These include headache, facial flushing (a warm, red feeling in the face and neck), nasal congestion, and sometimes mild nausea or an upset stomach. These happen because the drug dilates blood vessels throughout the body, not just in the genitals.
In terms of sexual effects, increased warmth or tingling in the genital area, more natural lubrication, and heightened sensitivity to touch are the most commonly reported changes. The timeline mirrors what’s seen in men: effects typically begin within about 30 minutes of taking sildenafil, with the drug remaining active for roughly 4 to 12 hours depending on the individual. Tadalafil lasts longer, often up to 36 hours.
Serious Safety Concerns
The biggest risk applies equally to men and women: never combine sildenafil or tadalafil with nitrate medications. Nitrates are commonly prescribed for chest pain and heart conditions (nitroglycerin patches or tablets, for example). The combination causes severe, sudden drops in blood pressure that can be life-threatening. Research published by the American Heart Association documented that the two drugs together can trigger a dangerous cycle where falling blood pressure reduces blood flow to the heart, which further drops blood pressure.
Women with low blood pressure, heart disease, or those taking blood pressure medications face elevated risk from PDE5 inhibitors. The drug also interacts with certain antifungal medications and some antibiotics that affect how quickly the liver processes it, potentially amplifying both the effects and the side effects.
Why It’s Not Approved for Women
Despite some promising results in subgroups of women, the FDA has not approved sildenafil or tadalafil for female use. The Mayo Clinic confirms that while Viagra has been tried as a treatment for sexual dysfunction in women, it remains unapproved for this purpose. The core problem is inconsistency: the drug helps a narrow subset of women (those with purely physical arousal issues) while doing nothing for the more common complaint of low desire. Female sexual dysfunction tends to involve a complex mix of psychological, hormonal, and relational factors that a blood-flow drug simply doesn’t address.
The FDA has approved two other medications specifically for women with low sexual desire: flibanserin (Addyi), a daily pill, and bremelanotide (Vyleesi), an injection taken before sex. Both work on brain chemistry rather than blood flow, targeting dopamine and other neurotransmitters involved in desire. However, flibanserin’s benefits have been debated, with some reviews concluding the risks don’t clearly outweigh the benefits for many women.
The Bottom Line on Taking BlueChew as a Woman
A single dose is unlikely to cause harm in an otherwise healthy woman who isn’t on conflicting medications. Some women do notice increased physical arousal, lubrication, and sensitivity. But BlueChew is prescribed through a telehealth platform designed for men with erectile dysfunction, and the prescribing process is not set up to evaluate whether the drug is appropriate for a female patient’s specific situation. The physical arousal benefits that do exist apply only to women whose difficulty is with their body’s response, not with desire itself, and even in that group, the evidence is mixed enough that it never earned FDA approval.