Progesterone and mood: why it calms some women and unsettles others

Progesterone acts in the brain as well as the uterus

When you swallow micronized progesterone, the liver converts a good share of it into breakdown products. One of these, allopregnanolone, is a neurosteroid that boosts the activity of GABA-A receptors, the brain's main calming system. That is why MedlinePlus advises taking progesterone at bedtime if it causes drowsiness or dizziness, and why many women notice better sleep.

The Office on Women's Health notes that low progesterone can make it hard to fall and stay asleep in perimenopause, so restoring it can feel like a relief for some women.

Why some women feel worse

A minority of women react differently. Instead of feeling calmer, they feel low, tearful, irritable or anxious on the days they take progesterone. Researchers think this reflects a difference in how their GABA-A receptors respond to neurosteroids, rather than abnormal hormone levels. A similar sensitivity is thought to contribute to premenstrual dysphoric disorder (PMDD), in which mood symptoms appear in the week before a period and ease within a few days of it starting.

MedlinePlus lists mood swings, irritability and excessive worrying among progesterone's possible side effects, along with tiredness, headache and breast tenderness.

Clues that progesterone is the cause

• You have a history of PMDD, marked premenstrual mood symptoms or mood problems on hormonal contraception
• Symptoms started within days of your first capsules
• On a cyclic schedule, symptoms appear on progesterone days and lift on the days off
• The pattern repeats from cycle to cycle
• Other causes, such as a new stress, poor sleep or another new medicine, do not explain it

Telling it apart from perimenopause itself

Perimenopause can affect mood on its own. The Office on Women's Health notes that the risk of depression and anxiety is higher around menopause, and that mood changes are more likely if you had them with your periods or after giving birth. Hot flashes and broken sleep add their own strain.

Timing is the most useful clue. A simple daily log of mood, sleep, hot flashes and which days you took progesterone, kept for a cycle or two, often makes the pattern clear. Bring it to your follow-up.

If your clinician suggests a trial change, such as switching schedules for two or three months, keep the same log so the effect can be judged fairly.

What can be adjusted

• Switching between a cyclic and a continuous schedule
• Lowering the dose, if it still protects the lining at your estrogen dose
• Taking the dose strictly at bedtime
• Considering a different progestogen or route, such as a hormonal IUD, discussed with a gynecologist
• Adding support for mood, such as therapy, or treating depression in its own right

Habits that support mood alongside treatment

Whatever the cause, some basics help. The Office on Women's Health recommends aiming for 7 to 9 hours of sleep, about 30 minutes of physical activity most days, limiting alcohol and finding ways to reduce stress. Alcohol in particular can worsen sleep and mood swings in perimenopause. Talking therapy, especially cognitive behavioral therapy, has good evidence for premenstrual mood symptoms and for low mood in midlife, and can be combined with any hormone plan. These steps are not a substitute for adjusting a medicine that is clearly causing problems, but they make the adjustment period easier.

Why not just stop it?

If you have a uterus and take systemic estrogen, progesterone is what protects the lining from overgrowth and cancer. Stopping it without a plan leaves estrogen unopposed. Changes should be made with your prescriber so you stay protected. If you do not have a uterus, you generally do not need progesterone for that purpose, and your clinician can review whether it still has a role.

When low mood needs more than a hormone tweak

Progesterone sensitivity tends to cause irritability, tearfulness or low mood that follow the medicine. Persistent low mood, loss of interest in things you used to enjoy, hopelessness or thoughts of not wanting to live are different. They need assessment by a primary care clinician or mental health professional, and therapy, medicine or both can help.

If you have thoughts of suicide or harming yourself, call or text 988 to reach the 988 Suicide and Crisis Lifeline, or call 911 in an emergency.

Progesterone through HealifyMD

Progesterone capsules are included in the HealifyMD hormone therapy plan, which costs $349 for the first month and then $99/month, confirmed at your eligibility review. Compounded capsules are not FDA-approved. Your clinician asks about mood and sleep at each follow-up and adjusts the plan with you.