Divide the net weight of the jar by the serving size on the label, and you have the number of servings. Divide that by how often you take it, and you have the number of days. Shilajit resin is sold by weight rather than by count, and jars run from about 10g up to 500g, so the honest answer is arithmetic rather than a single number.
This is one of the most common questions we get, and most of the answers online are unhelpful because they quote a figure for one specific jar. Below is the method instead, so you can work it out for whichever jar you own. There is also a section on the portion itself, which is where most of the uncertainty actually comes from.
How to work out how many servings are in your jar
You need two numbers, and both are printed on the pack. The first is the net weight of the resin in grams. The second is the serving size, which appears in the directions or the nutrition panel and is usually given in grams or milligrams.
If the serving is stated in milligrams, divide by 1,000 to get grams before you go any further. Then it is one division: net weight divided by serving size gives servings per jar. If you take it once a day, servings per jar is also days per jar.
Two things commonly trip people up. Some labels give a range rather than a single serving size, in which case work it out twice and you get the shortest and longest the jar could last. And some people take a serving on training days only, or five days a week, which stretches the jar accordingly.
The method, step by step
The numbers in the right-hand column are invented to show the working. Use the ones on your own label instead — serving sizes differ between products and between brands, so a figure lifted from someone else's jar will give you the wrong answer.
| Step | What you need | Where to find it | Worked example |
|---|---|---|---|
| 1 | Net weight of the jar, in grams | Front of the jar or the label | 30g |
| 2 | Serving size, in grams | Directions or nutrition panel | 0.3g |
| 3 | Servings per jar | Weight divided by serving size | 30 ÷ 0.3 = 100 |
| 4 | Servings you take per day | Your own routine | 1 |
| 5 | Days per jar | Servings divided by servings per day | 100 days |
| 6 | Months per jar | Days divided by 30, rounded down | 3 months |
Round down at the end rather than up. A little resin always stays behind on the spoon and around the rim of the jar, so the real figure is slightly shorter than the arithmetic suggests.
Why "a portion the size of a grain of rice" is a vague measure
Almost every set of directions for resin describes the portion by comparison, usually to a grain of rice or a pea. It is a reasonable way to describe something sticky that nobody wants to weigh, but it is not precise. Grains of rice vary in size by a factor of two or more depending on the variety, and resin is far denser than rice, so a rice-grain-sized lump of resin weighs considerably more than a grain of rice does.
The practical consequence is that two people following the same instruction can take noticeably different amounts, and the same person can drift over weeks without noticing. That is also why estimates of how long a jar lasts vary so much between customers who bought the identical jar.
How to be more consistent about your portion
- Weigh it once. A jeweller's scale that reads to 0.01g costs very little. Weigh what you have been taking, look at it, and you now have a calibrated eye.
- Use a reference object. Once you know what your serving looks like, compare it to something fixed each time rather than to rice — the head of a match, or the tip of the spoon filled to a set point.
- Portion in advance. Some people warm the jar slightly, divide the contents into a week of small portions, and store them separately. It removes the daily guesswork entirely.
- Use the same spoon. Resin clings to metal, and a consistent tool makes the amount you actually swallow more consistent too.
Our guide to taking shilajit resin covers the mechanics of getting it off the spoon, and there are step-by-step notes on preparing our shilajit if you are new to the resin format.
Picking a subscription interval that matches your jar
Monthly is the default on most subscriptions, and for a small jar taken daily it may well be right. For a larger jar it is usually wrong, and you end up with a shelf of unopened stock and a standing order you resent.
Work out days per jar first, then choose the nearest interval below that figure rather than above it. If your jar works out at roughly 100 days, a three-month interval leaves you a small buffer; a four-month interval means a gap. If your jar works out at eight months, most people are better off ordering manually.
It is also worth reviewing after the first jar. Almost everyone takes slightly more than they think they do at the start, so the second jar is the one that tells you your real rate. You can see the full range of jar sizes on the shilajit collection and pick a size that suits the interval you actually want.
Storing resin so the whole jar stays usable
Shilajit resin is stable stuff and does not need refrigerating. What it does need is a cool, dry, dark cupboard with the lid properly on. Warmth makes it softer and runnier; cold makes it stiff and hard to work with. Both are normal and neither means the resin has spoiled.
Keep water out of the jar. Wet spoons and steamy bathrooms are the two usual culprits, and moisture is the one thing that genuinely shortens the life of a jar. Use a dry spoon every time, close the lid straight away, and keep it out of the bathroom cabinet.
Check the best-before date on the base of the jar. That date assumes the jar is stored as directed and, for a large jar taken slowly, it is worth confirming you will finish it comfortably within it before you buy the biggest size available.
Common questions
Does a bigger jar always work out cheaper per serving?
Usually, but not always, and only if you finish it. Work out the price per gram rather than the price per jar, then check the days-per-jar figure against the best-before date. A large jar you throw a third of away is not a saving.
How do I know how much a serving weighs if the label gives a rice-grain comparison?
Look for a weight in grams or milligrams elsewhere on the label — most packs give one in the nutrition panel even when the directions use a comparison. If there is no weight anywhere, weigh a portion yourself on a fine scale. Our guide to reading a supplement label explains where these numbers usually sit.
Do capsules make the maths easier?
Yes. A capsule is a fixed, pre-measured amount, so servings per pot is simply the capsule count divided by the daily number of capsules. That predictability is the main practical difference, and we compare the formats in more detail in resin, capsules or gummies.
Should I take more to finish a jar before its date?
No. Stick to the serving on the label regardless of how much is left. If you consistently have too much resin left over, the answer is a smaller jar or a longer subscription interval next time.
Is there a standard serving size across brands?
There is not. Serving sizes for shilajit are set by each manufacturer, and there is no authorised health claim for shilajit or for fulvic acid in Great Britain, so no official intake figure sits behind them either. Always work from the label in front of you.
Food supplements should not be used as a substitute for a varied and balanced diet or a healthy lifestyle. If you are pregnant, breastfeeding, taking medication or under medical supervision, speak to your doctor or pharmacist before starting any supplement. We are not able to give medical advice.