If you've recently started hormone replacement therapy (HRT), you're probably wondering what is a click of estrogen and why your doctor is suddenly talking to you like you're operating a mechanical pencil. It's a bit of a weird way to measure medicine, right? Most of us are used to swallowing a pill or maybe getting a shot, but "clicks" sound more like something you'd hear in a workshop than a pharmacy.
Basically, when people talk about a "click" of estrogen, they're referring to a specific measurement used in metered-dose dispensers. These are usually plastic applicators (like the Topi-Click) that hold a compounded estrogen cream or gel. Instead of guessing how much cream to squeeze out of a tube—which, let's be honest, is impossible to do accurately—you twist the bottom of the container. It makes an audible click sound, and a precise amount of the hormone is pushed to the top.
Why do we use clicks anyway?
The reason your provider opted for this method is all about precision. Estrogen is powerful stuff. You don't need a handful of it; you often need just a tiny, specific amount to help with things like hot flashes, night sweats, or mood swings. If you were using a regular tube of cream, you might accidentally use way too much one day and not enough the next. That kind of inconsistency can make your hormones go on a bit of a rollercoaster ride, which is exactly what we're trying to avoid.
The "click" mechanism removes the guesswork. It's designed to dispense the exact same volume of cream every single time you twist it. For most standard dispensers, one click is about 0.25ml of cream, though that can vary depending on the specific device your pharmacy uses.
The math behind the click
Here's where it gets a little more technical, but I'll keep it simple. Understanding what is a click of estrogen also means understanding that the click is a measurement of volume (how much cream comes out), not necessarily the dose of the hormone itself.
Your doctor might tell you to use "two clicks a day." But the actual amount of estrogen in those two clicks depends on how the pharmacy mixed your cream. For example, if your cream is concentrated at 1mg of estrogen per ml, and each click is 0.25ml, then one click equals 0.25mg of estrogen. If you need a 0.5mg dose, you'd do two clicks.
It's always a good idea to look at the label on your specific bottle. It should tell you exactly how many milligrams are in each click. If it doesn't, don't be afraid to call your pharmacist and ask. They're used to these questions, and it's way better to be sure than to just wing it.
How to use your clicker like a pro
It seems self-explanatory—you twist, it clicks, you apply—but there are a few nuances that can make your HRT experience a lot smoother.
First off, when you get a brand-new dispenser, you usually have to "prime" it. This just means twisting the bottom a bunch of times until the cream actually starts peeking out of the top. Don't count these initial twists as your dose! Once the cream is level with the top, you're ready to start your actual count.
When you're ready for your dose, twist it slowly. You want to hear and feel that distinct click. If you're supposed to take two clicks, do them one at a time. It's also a good habit to wipe the top of the dispenser after you're done so the leftover cream doesn't dry out and clog the holes for next time.
Where does it go?
Once you've got your "clicks" on the top of the applicator, where does it actually go? Usually, transdermal estrogen (meaning it's absorbed through the skin) is applied to areas with thin skin and good blood flow. Common spots include:
- The inner forearms
- The behind the knees
- The inner thighs
- The upper chest (usually avoiding the breast tissue itself)
The goal is to spread it in a thin layer over a decent-sized area—maybe about the size of a CD (if anyone remembers what those are). You don't need to rub it in until it's completely gone like a heavy moisturizer; just a thin layer that can air dry for a minute or two is usually best.
Why "clicks" are great for customization
One of the biggest perks of the click system is that it allows your doctor to be really "fussy" with your dose in a good way. If you're taking a pill, you're usually stuck with whatever sizes the manufacturer makes—maybe 0.5mg or 1mg. There's not much middle ground.
With clicks, your doctor can say, "Hey, your symptoms are mostly better, but you're still having a few hot flashes. Let's go from two clicks to three." It allows for a much more "Goldilocks" approach to hormone therapy—finding the dose that's just right for your body without overdoing it.
A few "don'ts" for your estrogen clicks
While it's a pretty straightforward system, there are a few things that can trip people up.
Don't let your pets (or kids) touch the application site. This is a big one. If you put two clicks on your arm and then immediately go wrestle with your dog or pick up a toddler, you can actually transfer that estrogen to them. For a small pet, even a tiny bit of human-grade estrogen can be really dangerous. It's best to apply it, let it dry, and maybe wear long sleeves if you're going to be in close contact with others.
Don't apply it at different times every day. Your body likes routine. If you do your clicks at 8:00 AM one day and 11:00 PM the next, your estrogen levels are going to be all over the place. Try to pick a time—maybe right after your morning shower—and stick to it.
Don't forget to check the "viewing window." Most of these dispensers have a little slit on the side where you can see how much cream is left. There is nothing worse than clicking away on a Monday morning only to realize the container is empty and you forgot to call in a refill.
What if you mess up the count?
We've all been there. You're halfway through a conversation, or you're thinking about your to-do list, and you suddenly realize you don't know if you just heard one click or two.
If you're unsure, it's usually better to under-dose than over-dose for a single day. Just stop where you are and get back on track the next day. One slightly lower dose isn't going to ruin your progress, but doubling up might make you feel a bit jittery or give you some breast tenderness. If you consistently find yourself losing track, try to say the number out loud as you click. "One two" It sounds silly, but it works!
The takeaway on clicks
So, what is a click of estrogen? It's basically just a smart, mechanical way to make sure you're getting the exact amount of hormones your body needs. It might feel a little "medical" and strange at first, but most people grow to love the control it gives them.
Once you get the hang of the twist-and-click routine, it becomes just another part of your morning or evening. No pills to swallow, no needles to deal with—just a quick click, a bit of cream, and you're on with your day. If you ever feel like your "clicks" aren't doing the job, or if you're feeling a bit "too" hormonal, just chat with your doctor. That's the beauty of the system—it's incredibly easy to adjust until you feel like yourself again.