How to fill your own 600mg boric acid capsules at home

TL;DR

This guide provides a comprehensive overview on how to fill your own 600mg boric acid capsules at home, using vegetable capsules for optimal dissolution in the vagina. It offers practical advice on manual filling, the importance of using vegetable over gelatin capsules, and tips on storage to maintain the capsules’ integrity.

To make your own boric acid capsules at home, you’ll need only a few ingredients. It can get a little fiddly, but is completely doable.

Vegetable capsules are inexpensive, but not all vege caps are created equal and do not all dissolve as well as each other. My Vagina naturopaths have spent a lot of time finding the perfect capsules, and we did! Thus, we can confidently recommend our capsules, however there are many on the market, so choose what’s right for you.

Gelatin capsules are also fine to use, but in our experience, gelatin capsules don’t melt as well all the time, particularly with dry powders, as vege caps do.

A vegetable cap will dissolve in your vagina in about two hours. In terms of size, 00 should be sufficient to hold 600mg, but without a scale, figuring out how much is 600mg can be hard.

Below is a 00 capsule, so fill up the small half, and that should be about right. Pop the other side on, and you are ready to roll.

600mg boric acid capsules BV yeast infection thrush My Vagina
600mg boric acid capsules x 7 BV yeast infections My Vagina

To get the boric acid into the new capsule, you have two main options:

  1. Do it manually (instructions below)
  2. Buy a capsule filling machine. The most basic of these machines is built for the capsule size, so make sure the capsule maker and the capsules you buy are the same size. Other sizes won’t fit and it won’t work effectively. They are sometimes hard to get the hang of, but it’s kind of fun – like doing science.

Filling capsules manually

To fill capsules, you need a small funnel made out of paper and secured with sticky tape, and a stable working space. It might be a bit messy at first, but leave plenty of time for the task. Keep your small empty capsule half steady in your dry, clean fingers while you accurately fill it up with boric acid.

Remember that vegetable capsules will absorb moisture, so keep them in a tightly sealed container with one of those little moisture-wicking sachets that come in tablets.

Don’t store in the fridge, but store in a dry place. If the capsules get moist, they will start to swell up and go soft, which is an issue. To dry capsules out, separate them if you can and blow the hair dryer over them or put in a warm – not hot and not still on – oven for a few minutes. Don’t microwave.

When they get too dry, vegetable capsules shrink. Buying boric acid already in capsules – don’t spend a lot on boric acid capsules, as this is a cheap product.



Jessica Lloyd - Vulvovaginal Specialist Naturopathic Practitioner, BHSc(N)

Jessica is a degree-qualified naturopath (BHSc) specialising in vulvovaginal health and disease, based in Melbourne, Australia.

Jessica is the owner and lead naturopath of My Vagina, and is a member of the:

  • International Society for the Study of Vulvovaginal Disease (ISSVD)
  • International Society for the Study of Women's Sexual Health (ISSWSH)
  • National Vulvodynia Association (NVA) Australia
  • New Zealand Vulvovaginal Society (ANZVS)
  • Australian Traditional Medicine Society (ATMS)
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