Dotti is a prescription estradiol patch worn on the skin to treat menopause symptoms. It delivers a steady, low dose of estrogen through the skin over several days, replacing the hormone your body produces less of after menopause. The patch is approved to treat moderate to severe hot flashes, vaginal dryness, and to help prevent bone loss (osteoporosis) in postmenopausal women.
How the Dotti Patch Works
The active ingredient in Dotti is 17-beta-estradiol, a form of estrogen that is chemically identical to the estrogen your ovaries naturally produce. During and after menopause, estrogen levels drop significantly, triggering symptoms like hot flashes, night sweats, and vaginal dryness. The patch compensates for that decline by delivering estrogen directly through your skin and into your bloodstream.
Delivering estrogen through the skin has a practical advantage over pills: it requires a lower total dose of estrogen to reach effective blood levels. That’s because swallowed estrogen passes through the liver first, where much of it gets broken down before it can do anything useful. A patch bypasses the liver entirely. Once you remove the patch, estrogen levels return to baseline within about 24 hours, since the hormone has a short half-life in the body.
Available Strengths and Dosing Schedule
Dotti comes in five strengths, measured by how much estrogen the patch releases per day: 0.025 mg, 0.0375 mg, 0.05 mg, 0.075 mg, and 0.1 mg. The typical starting dose for hot flashes or vaginal symptoms is 0.0375 mg per day. For osteoporosis prevention, the starting dose is lower at 0.025 mg per day.
You replace the patch twice a week, so you’ll use roughly eight patches per month. The goal is to use the lowest effective dose for the shortest time needed.
How to Apply and Rotate the Patch
Place the patch on a clean, dry area of your abdomen or buttocks. The skin should not be oily, irritated, or broken. Do not apply it to your breasts, and avoid placing it at your waistline where clothing elastic or a waistband could rub it off.
Site rotation matters. Wait at least one week before reapplying a patch to the same spot. This gives the skin time to recover and helps reduce irritation. When you’re ready to apply a new patch, peel off the protective liner and press the adhesive side firmly against your skin.
The patch itself is a thin, three-layer system: a translucent outer film, an adhesive layer that contains the estradiol, and a peel-off liner you remove before application.
Dotti vs. Vivelle-Dot
Dotti and Vivelle-Dot both contain estradiol and are available in the same strengths. They belong to the same drug class and treat the same conditions. Both have lower-cost generic versions available. If you’ve been prescribed one and your pharmacy offers the other, they are therapeutically comparable products. The choice between them often comes down to insurance coverage, price, or personal preference regarding how the patch feels on the skin.
Potential Side Effects
Skin reactions at the application site are the most commonly reported issue. These can include redness, itching, and irritation where the patch sits. Rotating your placement site helps minimize this. Less commonly, some women experience blistering, peeling, or fluid-filled bumps under the patch.
Beyond skin effects, estradiol patches carry the same risks as other forms of hormone therapy. These include breast tenderness or swelling, headaches, nausea, and spotting or changes in menstrual bleeding patterns. Patches can also cause patchy brown or dark brown discoloration of the skin in some users.
Estrogen therapy in general carries serious but uncommon risks, including blood clots, stroke, and an increased risk of certain cancers. These risks are why the standard recommendation is to use the lowest dose that controls your symptoms and to reassess regularly whether you still need treatment.
Storage and Disposal
Keep unused patches at room temperature, away from heat and moisture. Don’t store them in the bathroom. When you remove a used patch, fold it in half with the sticky sides pressed together. This traps any remaining medication inside. Keep used patches out of reach of children and pets, since they still contain residual estrogen. For unused or expired patches, use a pharmacy take-back program rather than flushing them.