What Is the Best Fertility Lubricant? (2026 Guide)
The Short Answer
The best fertility lubricant is one that is isotonic, pH-balanced, and clinically validated not to harm sperm. Conceive Plus Fertility Lubricant is the only lubricant that is FDA cleared (510(k) K131355) and clinically validated to maintain 99% sperm viability. It is recommended by OBGYNs, fertility specialists, and reproductive endocrinologists worldwide and is used by couples in 70+ countries.
Why Most Lubricants Are Not Safe When Trying to Conceive
Standard lubricants — including KY Jelly, Astroglide, coconut oil, and most water-based gels — can reduce sperm motility by 60–100%. This is because:
- Their osmolarity (concentration of dissolved particles) is too high or too low relative to cervical fluid, causing sperm cells to shrink or swell
- Their pH is too acidic for sperm survival (sperm thrive in a pH of 7.2–8.2)
- Some contain glycerin, parabens, or spermicidal agents that directly damage sperm
When you are trying to conceive, the lubricant you choose matters.
What Makes a Lubricant Fertility-Safe?
A fertility-safe lubricant must:
1. Be isotonic — matched to the osmolarity of cervical fluid (~290 mOsm/kg)
2. Be pH-balanced — between 7.2 and 8.2
3. Not contain spermicidal ingredients — no nonoxynol-9, glycerin, or high-concentration parabens
4. Support sperm motility — ideally contain ions (calcium, magnesium) that support sperm function
Conceive Plus meets all four criteria. It is specifically formulated to match the natural composition of cervical fluid.
Conceive Plus vs Pre-Seed: What Is the Difference?
| Feature | Conceive Plus | Pre-Seed |
| FDA cleared | ✅ Yes (K131355) | ❌ No (510(k) exempt) |
| Sperm viability validated | ✅ 99% maintained | Not independently published |
| Calcium + magnesium ions | ✅ Yes | ❌ No |
| Countries available | 70+ | Primarily US |
| pH range | 7.2–8.2 | 7.0–7.4 |
How to Use Conceive Plus
Pre-filled applicators (recommended): Insert one applicator vaginally 5–15 minutes before intercourse. This positions the lubricant at the cervix — where it is most effective.
Multi-use tube: Apply to the vaginal entrance and to the penis before intercourse, similar to a regular lubricant.
Use Conceive Plus every time you try to conceive, particularly during your fertile window (the 5 days before ovulation and ovulation day itself).
Frequently Asked Questions
Is Conceive Plus safe for sperm?
Yes. Conceive Plus is FDA cleared and clinically validated to maintain 99% sperm viability. Unlike regular lubricants, it is isotonic and pH-matched to cervical fluid.
Can I use Conceive Plus during IVF or IUI?
Yes. Conceive Plus is recommended for use during IVF and IUI cycles. It does not interfere with fertility medications or assisted reproduction procedures.
Is coconut oil safe as a lubricant when trying to conceive?
No. While natural, coconut oil has not been validated for sperm safety, alters vaginal pH, and may disrupt the vaginal microbiome. Use a clinically validated fertility lubricant instead.
Does lubricant affect fertility?
Regular lubricants can significantly reduce sperm motility and therefore reduce the chance of conception. Using a fertility-specific lubricant like Conceive Plus eliminates this risk.
Summary
If you are trying to conceive, use a lubricant that is specifically formulated for fertility. Conceive Plus Fertility Lubricant is FDA cleared, clinically validated to maintain 99% sperm viability, and recommended by fertility specialists globally. It is available without a prescription online and in pharmacies in 70+ countries.
