Beli Review: Male Fertility Is Half of It
Beli sells prenatal supplements for women and for men, plus at-home fertility tests, generally from about $50 to $90. Two things distinguish it: 400mg of choline in the women's formula, addressing a nutrient most prenatals under-dose badly, and a men's prenatal — a category that barely existed until recently despite male factors contributing to roughly half of infertility cases.
Verified August 24, 2026. Beli is a supplement company, not a healthcare provider. Fertility concerns warrant medical assessment. For weight-loss medication see our GLP-1 provider rankings.
Affiliate disclosure: Rx Saver Hub earns a commission if you sign up through links on this page. It does not change what we write — see our disclosure policy.
Verdict: Two genuinely well-judged formulation decisions in a category full of undifferentiated products. Choline has real evidence in fetal brain development and most prenatals contain a fraction of the recommended intake because it is bulky and expensive to include properly — 400mg is a substantive choice. And the men's prenatal addresses something the fertility conversation systematically ignores: sperm parameters matter, they respond to nutrition and lifestyle over roughly a three-month cycle, and men are rarely told any of this. For readers here there are also two GLP-1 points worth knowing before conceiving.
What Beli Costs
Beli prices per product with bundles for couples.
| Plan | What you get | Listed | Real cost |
|---|---|---|---|
| Women's prenatal | Methylated folate, 400mg choline | Around $50 to $55 | The differentiated formula |
| Men's prenatal | Sperm quality focus | Similar tier | Half the equation |
| Couples bundles | Both together | Up to around $90 | Better per-product |
| At-home fertility tests | For both partners | Separate | Directional, not diagnostic |
Two GLP-1 facts to settle before trying to conceive
First, these medications are not recommended in pregnancy, and because of their long half-life the guidance is to stop well before conception — for semaglutide, at least two months. That timeline needs discussing with your prescriber now rather than when you start trying. Second, tirzepatide has a documented interaction with oral contraceptives: delayed gastric emptying reduces absorption, and the labelling advises a non-oral or barrier method for four weeks after starting and after each dose increase. That, plus fertility genuinely improving as weight falls, is why unplanned pregnancies happen on these medications.
If you are supplementing as a couple, the men's side is the half more likely to have been overlooked entirely.
Why the men's prenatal is the interesting part
Male factors contribute to roughly half of infertility cases, and yet the preconception conversation is overwhelmingly directed at women. That imbalance is not clinical; it is cultural.
Sperm production runs on a cycle of roughly seventy-four days plus maturation time, which means changes to nutrition, sleep, heat exposure and alcohol intake take around three months to show up in a semen analysis. That is a genuinely actionable timeline and one most men have never been told.
The evidence base for antioxidant and micronutrient supplementation in male fertility is real but modest — reviews suggest possible improvements in some sperm parameters, with the caveat that studies are heterogeneous and outcome measures vary. Zinc, selenium, folate, CoQ10 and vitamins C and E are the commonly studied components.
The lifestyle factors have better evidence than any supplement: excess weight, smoking, heavy alcohol, heat exposure and poor sleep all affect sperm parameters, and all are modifiable.
Weight, testosterone and sperm
This is where it connects to the site's subject properly. Excess adipose tissue increases aromatase activity, converting testosterone to oestrogen, which lowers testosterone and can impair sperm production. Obesity is associated with poorer semen parameters across multiple measures.
Weight loss improves these in a meaningful proportion of men, which is worth knowing before pursuing more invasive options.
The critical counterpoint: testosterone replacement therapy suppresses sperm production substantially and is emphatically not a fertility treatment, despite frequently being sought by men with symptoms that overlap. If you may want children, raise that before starting TRT, not after.
What choline is doing in the women's formula
Choline has genuine evidence in fetal brain development, recommended intake in pregnancy is substantial, and survey data consistently shows most pregnant women fall well short of it.
Most prenatal vitamins contain only a token amount because choline is bulky and costly to include at a meaningful dose — it would make the pill larger or require more of them. Dosing it properly is therefore a real formulation decision rather than a marketing claim.
Methylated folate is the other component worth noting. Adequate folate before conception substantially reduces neural tube defect risk, and the critical window is often before a pregnancy is confirmed — which is why preconception supplementation is standard advice rather than something to begin after a positive test.
Pros and Cons
Strengths
- 400mg choline, where most prenatals contain a token amount
- Methylated folate in a bioavailable form
- Men's prenatal addresses half the fertility equation that is routinely ignored
- At-home fertility testing for both partners
- Couples bundles reflecting that this is a two-person question
Drawbacks
- Premium pricing relative to standard prenatal vitamins
- Male fertility supplement evidence is real but modest
- At-home fertility tests are directional rather than diagnostic
- Dietary supplements are not FDA-reviewed for effectiveness before sale
Who Should Pick It — and Who Shouldn't
Good fit
A couple planning a pregnancy who want properly dosed choline and folate, and who recognise that the male half of the equation deserves attention too.
Look elsewhere
Anyone treating supplements as a substitute for medical assessment after a period of unsuccessful conception, and anyone on a GLP-1 who has not yet discussed timing and contraception with their prescriber.
Frequently Asked Questions
Do men need a prenatal supplement?
Male factors contribute to roughly half of infertility cases, and sperm parameters respond to nutrition and lifestyle over a roughly three-month cycle. Supplement evidence is real but modest; the lifestyle factors — weight, smoking, alcohol, heat, sleep — have better evidence and are modifiable.
Does weight affect male fertility?
Yes. Excess adipose tissue increases conversion of testosterone to oestrogen, lowering testosterone and impairing sperm production, and obesity is associated with poorer semen parameters. Weight loss improves these in a meaningful proportion of men.
Can I take a GLP-1 while trying to conceive?
These medications are not recommended in pregnancy and the guidance is to stop well before conception — for semaglutide, at least two months, reflecting its long half-life. Discuss the timeline with your prescriber before you start trying rather than after.
Why does choline matter in a prenatal?
It has genuine evidence in fetal brain development, recommended intake in pregnancy is substantial, and most pregnant women fall well short. Most prenatals contain only a token amount because choline is bulky and costly to include properly — so dosing it adequately is a real differentiator.
Considering Beli?
If you are planning a pregnancy, both partners are worth supplementing and only one usually gets attention. And settle the GLP-1 timing and contraception questions with your prescriber first.
More Reviews Like This
Other brands we have reviewed in the same category.
Pricing and formulation details read from belibaby.com on August 24, 2026 and subject to change. Contraceptive and pregnancy guidance reflects published prescribing information for GLP-1 receptor agonists. These statements have not been evaluated by the Food and Drug Administration. This page is informational and not medical advice. Rx Saver Hub earns a commission on purchases made through links on this page.