Medically reviewed by: 
Too many women suffer from PMS (premenstrual syndrome) and its combination of physical and emotional symptoms occurring before the start of one’s period. You likely know the symptoms well — bloating, fatigue, mood swings, and headaches — often debilitating enough to cause many women to miss work or school. If you have crippling cramps too, there are a few really effective period pain relief devices we’ve reviewed and highly recommend you check out. But many women would prefer to relieve monthly menstrual discomfort with oral supplements instead. Luckily companies like Hum, FLO, and Bonafide offer unique formulations for PMS symptom relief.
Comparing the top PMS vitamins from Hum, FLO, and Bonafide
With each company offering similar, but ultimately uniquely formulated supplements, it can be tricky to compare Hum to FLO to Bonafide. To identify the best one for your physical needs AND emotional swings, there are a number of factors you’ll want to consider. Obviously pricing is important, so let’s start there with a quick head to head comparison.
PMS Vitamin Comparison: Hum vs FLO vs Bonafide | |||
|---|---|---|---|
| How to take | 1 pill daily | 2 gummies daily | 2 pills daily |
| Subscription plan? | ❌ | ✅ | ✅ |
| Cost of subscription | ❌ | $25 per month | $32 per month with code FINVSFIN20 |
| Shipping cost of subscription | ❌ | Free | Free |
| Cost of monthly supply a la carte | $26 | $30 | $44 with code FINVSFIN20 |
| Hormone-free? | ❌ | ✅ | ✅ |
| Ingredients | – Chaste berry – dong quai | – Chaste berry – Dong quai – Vitamin B6- Lemon balm | – Purified Swedish Flower Pollen Extract – Chromium Picolinate – Royal jelly |
| Website |
What active ingredients are in PMS vitamins? (and what’s the science behind them?)
Hum moody bird ingredients
Hum’s supplements for PMS have a cute name (Moody Bird™) and include two ingredients to fight against PMS symptoms: chaste berry and dong quai. Chaste berry has been shown in clinical trials to support women’s psychological and physical health during their menstrual cycles, and is used to alleviate hormonal acne, mood swings and breast pain. Dong quai had been used in traditional medicine for centuries to restore female hormonal levels, and is commonly used to alleviate cramps and bloating.
HUM offers a ton of other supplements and vitamins to treat more than just PMS – check it out in our review.
FLO vitamin ingredient list
FLO also uses chaste berry and dong quai, along with two other ingredients: vitamin B6 and lemon balm. Vitamin B6 has been shown to reduce a wide range of PMS symptoms, mostly notably premenstrual depression. In a 2015 study, lemon balm was found to be effective at reducing PMS cramps among 100 participants. A separate study in 2014 researched the anti-stress effects of lemon balm, and participants reported improvements in both mood and cognitive performance. Given that PMS causes very real symptoms that are both physical and mental, we support the inclusion of these additional evidence-backed ingredients.
Bonafide’s ingredients: what’s inside their pms vitamins?
Bonafide uses what they call their “Exclusive Bonafide Pollen”, i.e pollen extracted from four plants grown in Sweden, the healing benefits of which are unlocked through their proprietary purification process. This pollen is intended to reduce emotional PMS symptoms such as irritability and mood swings, although the mechanism is a bit of a black box. We don’t know a ton about the science behind this claim, but do know that Bonafide has thousands of happy customers who claim it works for them, so we won’t bash it just yet.
Bonafide Supplement’s second active ingredient is Royal Jelly, which is a substance naturally made by honeybees. It’s been shown (along with flower pollen) to reduce emotional PMS symptoms.
The third and final ingredient in Bonafide’s vitamins is Chromium Picolinate, an essential mineral for healthy metabolism that works to reduce calorie intake and fight against food cravings that cause so many women to gain weight before their period. Chromium is an insulin cofactor that assists with the metabolism of glucose and fats by positively affecting insulin sensitivity. It’s important for women who struggle to resist intense cravings to prevent premenstrual weight gain.
Reviews: what are customers saying about Hum, FLO, and Bonafide?
Hum’s customers noticed significantly muted PMS symptoms after just two months of taking their supplement.
Customers of FLO also claim results within a few months of diligent use.
Bonafide customers are also very positive on the supplement brand’s effectiveness overall.
The verdict: which pms vitamin is better — Hum, FLO, or Bonafide?
While Hum, FLO, and Bonafide all have similar offerings, there are a couple noteworthy nuances to consider.
Hum is the most affordable.
Hum and FLO have similar active ingredients (chaste berry and dong quai), but FLO’s formula contains Vitamin B6 and lemon balm as a bonus, both of which work to further relieve PMS symptoms, physical and mental. Additionally, I appreciate FLO’s supplements in chewable gummy form, rather than as a swallowable pill or capsule — but that’s just a personal preference.
FLO is likely to yield the best results
Bonafide is ideal for those with…
If you’re looking for a vitamin for PMS that has only proven ingredients and thousands of happy customers, all at an affordable price: FLO is our top choice. Hum is a great option too with similar active ingredients, but we think FLO inches ever so slightly above. If you’ve tired Hum or FLO and are interested in seeing how Swedish flower pollen affects your symptoms, give Bonafide a shot instead.
What’s your favorite PMS vitamin brand? Let us know in the comments below.
Methodology
We conduct extensive research to evaluate the pricing, effectiveness, accessibility, overall quality, and user experience of each product we review. This also included examining and comparing them to several alternatives.
| Review Process | Key Metrics | Weighting |
|---|---|---|
| Purchase online | - ease to complete intake form - affordability - upfront commitment or subscription required? - money back guarantee or refund policy? | 1 |
| Shipping + unboxing | - shipping cost - time from order to treatment delivery - sustainable packaging | 1 |
| Testing + journal for 1-3 months | - ease of use - transition into habitual use - taste / smell / feel / pain | 1.5 |
| Results after 3 months of use | - efficacy / results - ease of forming a health habit - requires additional purchae? - responsive customer support - willingness to recommend to a friend | 1.5 |
Discover more women's wellness brands
Hers 2-in-1 Hair Growth Gummy Review: Is It Worth It?
Hers Hair Growth Gummy Overview Cost: From $35 per month Active ingredients: Oral minoxidil 1.5 mg + biotin 2.5 mg in one gummy Administration method: Once‑daily chewable gummy FDA information: Minoxidil is an FDA‑approved ingredient for hair loss when used
Hers vs. Happy Head: Best for Hair Regrowth?
Let’s be real—dealing with female hair loss in 2026 can feel both frustrating and weirdly isolating. You start noticing more strands in the shower drain or thinning around your part, and suddenly you’re deep-diving into
Hers vs Nutrafol: Comparison Review in 2026
When I first started noticing more hair in the shower drain than on my head, I panicked. Like, full-on Googling at 2 a.m. kind of panic. I’d tried everything from rosemary oil to scalp massages,
Winona vs. Alloy: Which Menopause Treatment Is Better?
Menopause isn’t just about hot flashes and mood swings—it’s a full-body shift that can leave you feeling like a stranger in your own skin. One day, you’re powering through life like normal, and the next,
Hers vs. Musely: Which Is Better for Female Hair Loss?
Let’s be real—hair loss can feel like a total confidence killer. And while it’s often seen as a “men’s issue,” millions of women struggle with thinning hair, excessive shedding, or even noticeable bald spots. Whether
Strut O Cream – Does It Work for Better Sex and Climax?
Satisfying sex – who doesn’t want that? It’s an essential part of our lives, and having control over it might be more important than you initially think. Sex isn’t always just about the two ends
