Yaz vs Yasmin: the differences that matter for PMS and PMDD

Yaz and Yasmin are both combined oral contraceptives. Both use the same progestin, drospirenone, paired with the estrogen ethinylestradiol. The difference is in the dose and the schedule.

Pill	Estrogen dose	Active pills	Pill-free break
Yaz	Lower	24	Four days
Yasmin	Higher	21	Seven days
Yasminelle	Same lower dose as Yaz	-	21-day cycle

That shorter break matters for premenstrual symptoms. A longer hormone-free interval gives estrogen and progesterone more room to drop and rise again before the next pack starts, which can let premenstrual symptoms creep back in.

Yaz's shorter break is part of why it's the pill specifically approved by the FDA for premenstrual dysphoric disorder (PMDD), alongside contraception and acne. Yasmin is approved for contraception only.

If you're comparing Yasmin and Yaz specifically for mood or premenstrual symptoms, the estrogen dose and the length of the pill-free week are what matters, not the brand name itself.

Yaz has far more evidence behind it for PMDD specifically, because it's the pill that went through FDA-reviewed trials for that diagnosis. Yasmin wasn't developed or tested the same way for premenstrual mood symptoms, so there's no matching body of research to compare against.

What evidence exists for Yasmin comes mostly from contraception trials that measured premenstrual-type complaints as a secondary outcome.

In a 2010 trial of 768 women, the 573 who took Yasmin showed, compared with the 195 on a desogestrel-based pill:

• Improved water retention and appetite scores between periods
• Improved water retention and general well-being during their period

That's useful, but it isn't the same as a trial designed around PMDD.

A separate Cochrane review looked at non-contraceptive estrogen patches, gels and implants for PMS (not birth control pills) and found the evidence mixed and limited by small trials. That's a different treatment path from Yaz, which has its own FDA-reviewed trials for PMDD specifically.

For PMS rather than PMDD, PMS treatment: what actually helps covers the fuller range of options, including non-hormonal ones.

If you're in the thick of the week before your period while you decide which pill, if any, to try, it can help to have somewhere to put it. Niyora is a PMS and PMDD support app.

Its Moon feature lets you write down what's happening and see it from another angle before your appointment, so you can show up with a clearer sense of what you want to ask.

Because Yaz and Yasmin share the same progestin, most side effects overlap in the first few cycles:

• Nausea
• Headache
• Breast tenderness
• Spotting between periods
• Mood changes

Any combined pill containing drospirenone carries a small increased risk of blood clots compared with pills using levonorgestrel, and that risk applies to both Yaz and Yasmin equally since the progestin is identical. The estrogen dose difference between them is too small to change that meaningfully.

On weight, the trial comparing Yasmin with a desogestrel-based pill found no sign that Yasmin caused more weight gain.

If anything, water retention and appetite scores improved slightly on the drospirenone pill rather than worsened. That lines up with drospirenone's mild diuretic-like effect, one reason it's sometimes chosen over other progestins.

Breast tenderness is common in the first month or two on either pill and usually settles. It's a temporary soreness from fluid shifts, not ongoing breast growth, and it isn't a feature that's specific to Yaz over Yasmin or the other way around.

Yaz side effects, including mood goes through the fuller list and timeline for Yaz, most of which applies to Yasmin too given the shared progestin.

Switching between Yaz and Yasmin is usually simple because they contain the same progestin.

Most people switch one of two ways:

• Finish the current pack, then start the new one without a break
• Start the new pack right away, if a doctor suggests it

Because the progestin doesn't change, your body isn't adjusting to a new hormone, only a different estrogen dose and a different length of pill-free week.

Yasmin doesn't carry the same FDA approval or trial history for that diagnosis, so moving from Yaz to Yasmin for mood reasons isn't backed by the same evidence as the reverse direction. Yaz for PMDD: does it work? covers what that approval is actually based on.

Yasminelle, where it's sold, sits closer to Yaz in estrogen dose than Yasmin does, which is why some people switch there instead when a doctor wants to keep the lower dose but try a different pill-free schedule.

How long does Yaz take to work? is worth reading too, since any switch resets that waiting period.

Bring the specifics of your symptoms, not just the brand names.

This pattern points toward PMDD, and toward Yaz's FDA-reviewed indication specifically:

• Five or more symptoms in the week before your period
• At least one of them a mood symptom
• Symptoms that ease within days of bleeding starting

If your symptoms are physical instead, like bloating or breast tenderness, without the mood component, that's closer to PMS, and either pill, or a non-hormonal option, might apply.

Birth control for PMDD: does it work? and What is PMS? Premenstrual syndrome, explained can help you sort which description fits before the appointment.

Track your symptoms by day for a cycle or two before you go in. That daily record, more than the pill name, is what helps a doctor tell PMS from PMDD from something else entirely.