Menstrual Cup Reviews: The Good, the Bad, and What Nobody Tells You

We’re going to do something unusual for the website of a brand that sells cups: tell you the bad things too. If you’re looking for menstrual cup reviews, you’ll find two extremes — the fanaticism of “it changed my life” and the drama of “I hated it and went back to tampons” — and both are real experiences. After years of selling cups, reading reviews and answering hundreds of questions on our forum, we have a fairly complete picture of what real users think. This is the honest version: the good, the bad and what almost no advert tells you.

The fact that puts all menstrual cup reviews in order

Before the anecdotes, the science. The largest scientific review of menstrual cups, published in The Lancet Public Health (43 studies, more than 3,300 participants), found two things that sum it up: leakage with a cup is equal to or lower than with tampons and pads, and around 70% of people who try it want to keep using it afterwards.

Think about it the other way round: 30% don’t continue. The cup isn’t for everyone, and anyone who tells you otherwise is selling you something. But 70% loyalty after trying something so different from what we’d used all our lives is a figure no disposable product can show. The scientific basis of the cup is, in short, more than well established.

The good: what thousands of positive reviews repeat

• “I forget I have my period.” Up to 12 hours of continuous wear. You put it in in the morning and don’t think about it again until the evening. It’s by far the most repeated comment.
• “No more buying every month.” A €14.99-19.99 cup that lasts years compared with €60-120 a year on disposables. The math does itself: a cup lasts years, a pack of pads lasts a month.
• “No dryness or odor.” The cup collects instead of absorbing: it doesn’t dry out the mucosa like a tampon, or create the smell of blood in contact with air that a pad does.
• “Sport, swimming and sleeping, sorted.” No strings, no changes every 4 hours, no awkward moments in the water.

The bad: the real complaints (and how fixable they are)

• The learning curve is real. In the first 2-3 periods there can be frustrating moments: folds that don’t open, the cup slipping down, the odd leak until you get the hang of it. People who give up usually give up here — just before it becomes automatic. Our guides to folds and leaks solve 90% of cases.
• Emptying it away from home is daunting. In a public restroom without a sink in the stall, you need to carry a small bottle of water or wipe it with paper and rinse it later. It’s solvable, but it’s real (see cleaning the menstrual cup in public restrooms).
• Getting the size right isn’t always immediate. On our forum, the most repeated questions are about size and model: “I’m over 25 and haven’t given birth, which one do I choose?”, “I had a C-section, S or L?”. The size guide clears it up, and the Starter pack (below) solves it completely.
• You have to touch yourself. Inserting and removing the cup involves contact with your body and your blood. For many it ends up being a bonus in getting to know yourself; for others it’s a legitimate barrier. If that’s you, don’t force yourself: there are very common fears that dissolve with information, but the last word is yours.

What nobody tells you (neither fans nor critics)

Three things that almost never appear in reviews and should:

• You can use the toilet with it in. Surprisingly, it’s one of the most searched questions: yes, peeing and pooping with the cup in is perfectly possible.
• You’ll get to know your period for the first time. The cup shows you how much you bleed in real milliliters. Many users discover their “super-heavy period” is 40 ml… and others discover theirs really does warrant seeing a doctor. That information is gold.
• Its safety is better studied than almost any alternative. The Lancet review found no increase in infections, and cases of toxic shock syndrome associated with cups are extraordinarily rare. With basic hygiene, the cup is a safe option — and even so, as always: if you get a sudden high fever with any internal product in, remove it and seek medical attention.

And a manufacturer’s reflection, with data and no conspiracy theories: why do menstrual cup reviews spread by word of mouth rather than advertising? Because a product that ends monthly repurchasing doesn’t fund campaigns. The disposables industry makes money from you every month; the cup, once. Guess which of the two business models pays for TV ads.

The questions most often asked before buying

We’ve been answering questions on our support forum for years, and there’s a very clear pattern: almost nobody doubts whether the cup “works” — they doubt whether it works for their particular case. The most repeated questions, with our honest opinion:

• “I had a C-section, which size do I choose?” Sileu’s size criteria don’t depend only on whether you’ve had a vaginal birth; age and pelvic floor strength matter too, which is why the Starter pack with both sizes removes the doubt entirely.
• “Can I be allergic to the silicone?” It’s one of the most frequent questions, and the answer is reassuring: our cups are made of medical-grade silicone certified to ISO 10993, precisely the biocompatibility standard for materials in contact with the body; silicone allergy exists, but it’s rare. We cover it in disadvantages of the menstrual cup.
• “Why does my cup slip out or down?” It’s almost always a matter of size, of it not having opened properly when inserted, or of a particularly strong pelvic floor pushing it down. It isn’t a product fault or something that happens “only to you” — it’s one of the most asked-about issues, and the solution is almost always simple.

That pattern, more than any five-star review, is the opinion that counts most: most initial doubts have a clear answer and aren’t a reason to rule out the cup before trying it.

What if I try it and I’m not convinced?

Our honest advice: give it three cycles before deciding, because your opinion on day one and in month three are often opposite. Start at home, without rushing, following our guide to choosing your first menstrual cup. If you’re unsure about size, the Starter pack (€21.99) includes S and L of the model you choose: it costs less than two cups and takes the lottery out of it. And if in the end the cup isn’t for you, that’s fine: period underwear (€9.99) is the reusable alternative with no learning curve. What matters is that the decision is yours and well informed — that’s why we wrote this.