White Widow (Cannabis flos S-LAB): limonene at the forefront and the name of several independent lines
What Polish strain databases and the lineage graph of this cluster say about White Widow: volatile composition described by one source, one pharmacy supplier, and a name under which more than one company maintains its own lines.
| Strain card | White Widow |
|---|---|
| Producers | S-LAB (1 pharmacy position) |
| Medical brand | the same as the producer |
| Alternative names | none |
| Category according to sources | hybrid |
| Leading terpene | limonene |
| Other terpenes | bisabolol humulene caryophyllene myrcene nerolidol pinene |
| Lineage | established Brazilian Sativa × South Indian Indica |
| Source consistency | one source |
- Who supplies. Exclusively S-LAB, so there is nothing to compare versions with, and a supply break means no availability of this strain, not another version of it.
- Profile. Limonene leads, alongside bisabolol, humulene, caryophyllene, myrcene, nerolidol, pinene. We do not provide percentage shares because sources calculate them against different totals.
- Origin. Established lineage, parents are Brazilian Sativa and South Indian Indica.
- What is missing. The profile describes one source, so there is nothing to compare it with.
What is White Widow and where does this strain come from?
White Widow is a hybrid with a documented lineage: the breeder Green House Seeds and the Leafly database indicate a cross between Brazilian sativa and South Indian indica from the southern subcontinent. The lineage is therefore known, but it leads to two regional categories, not to two named, individually identified plants.
Brazilian sativa and South Indian indica are descriptions of origin, not proper names of specific individuals. Under each of these terms lies a population of plants from that region, so two cultivars derived from “the same” landrace may come from specimens that never grew next to each other. The lineage of this strain counts as known in the cluster because the breeder revealed it and it can be cited, but it ends in two geographical drawers instead of two addresses in the graph.
The name itself also does not lead to one plant. The note in the lineage graph of this cluster records that under the term White Widow, at least two independent companies maintain their own clonal line, listed there as Paradise Seeds and 7ACRES from the Canopy Growth group, and each claims theirs is the original, with no decisive source available. The graph treats this term as a family label, not as one identifiable individual. For the patient, this results in a practical matter: the dried flower issued today under this name is defined by the producer’s documentation and batch number, not by the history of the name itself.
Which producers supply White Widow to Polish pharmacies?
One. In the list on which this cluster stands, the dried flower under this name is supplied exclusively by S-LAB, and there is only one pharmacy position, so there are no versions to compare. The database from which the profile comes marked this position as unavailable in circulation at the time of listing.
| Producer | Registered name without numerical part | Genetics according to the database | Registered leading terpene | Status at the time of listing |
|---|---|---|---|---|
| S-LAB | Cannabis flos S-LAB | hybrid | limonene | unavailable |
The full registered name carries a number: it includes the declared THC content along with a note about tolerance and the upper limit of CBD content. In the table, it was intentionally left without this part, because the quoted bare returns exactly to where the rule of providing a range came from. The producer’s declaration allows a deviation of one-tenth of the nominal value, so we provide the THC content for this position as 16.2-19.8% and only in that form. What this number says, and what it does not say about potency, is discussed in a separate text about lower potency dried flower.
One supplier is the state of the listing, not a property of the strain. The registration of the raw material is valid for five years, can be withdrawn early, and the import contract can be cut off overnight; additionally, the wholesaler can exhaust the stock faster than the catalog can record it. The card for this position still stands in the catalog, even though at the time of listing it was described as unavailable, and this discrepancy between the catalog and stock status is the rule here, not the exception. We therefore maintain the current state of the assortment exclusively in the listing of strains available in Polish pharmacies, and what else this producer supplies is described in the text about its catalog.
What does White Widow smell and taste like?
- bisabolol bisabolol
- humulene humulene
- caryophyllene caryophyllene
- limonene limonene (leading in the pharmacy list)
- myrcene myrcene
- nerolidol nerolidol
- pinene pinene
The database describes this dried flower with three terms: spicy, fruity, and pungent. These are catalog labels, not the result of sensory evaluation conducted according to a protocol, so they speak more about the drawer into which this position was placed than about what the patient will feel upon opening the package.
The smell originates from the volatile composition, and for White Widow, it is described by one source, one Polish profile database. It lists seven compounds: limonene, nerolidol, caryophyllene, pinene, myrcene, bisabolol, and humulene. The highest share goes to limonene, followed closely by nerolidol, which is rare in this cluster because nerolidol usually occupies lower positions. The citrus note of the former and the warmer, slightly floral note of the latter explain why the catalog description mixes fruit with spice. More about the leading compound is discussed in the text dedicated to limonene, and about its neighbor from this card in the text about nerolidol.
We do not provide percentage shares for the names of compounds, and this card shows the reason better than the general disclaimer: seven values from it sum up to eighty-nine percent. Eleven points are missing to reach a full hundred, and it is unclear what they pertain to, as the source does not specify whether the denominator is the mass of the dried flower, the essential oil itself, or only those compounds that were marked. In the same database, twelve positions hit exactly one hundred out of one hundred forty-five, and six others exceed it, which would be impossible with a fixed denominator. A number without a denominator in the drug description looks like a measurement, but it is not, so only the composition remains.
How long does it take for White Widow to take effect and how long does the effect last?
Not according to the time appropriate for this strain, but according to the time appropriate for the route of administration. No separate pharmacokinetic study has been published for any single cultivar, so the ranges below describe absorption from the lungs or from the gastrointestinal tract and apply equally to every pharmacy position.
The route of administration determines the course more than the strain itself, and the ranges below describe it, not this cultivar, because no pharmacokinetic study for a single cultivar has been published.
| Vaporization | After ingestion | |
|---|---|---|
| First sensations | after a few minutes | from half an hour to two |
| Onset | another ten to thirty minutes | slow, over several hours |
| Total duration | within two to four hours | after six, sometimes eight hours |
| Typical error | none | taking a dose after thirty minutes, which gives both doses at once |
None of the data collected for this position changes this. Neither the volatile composition from one card nor the record of THC content indicates how quickly the substance will appear in the blood or when it will disappear from there.
What is known and what is not known about the effects of White Widow?
Nothing is known that pertains to this strain as a whole. No clinical study has been conducted on dried flower with this name, and what can be cited pertains to a single compound from its profile, studied separately and on animals. The rest of the descriptions come from catalog materials and patient reports.
| Study | Model and route of administration | What was shown |
|---|---|---|
| do Vale TG et al., 2002 Phytomedicine PMID:12587690 |
rodent (mouse, intraperitoneal administration) | Limonene administered intraperitoneally in mice showed muscle relaxant effects (rota-rod test) from a dose of 50 mg/kg and prolonged sleep time induced by pentobarbital at a dose of 200 mg/kg (about 2.6 times); in the elevated plus maze test, already at a dose of 5 mg/kg, it reduced the number of entries into the open arms, which the authors described as an anxiogenic effect, not anxiolytic. |
| Fakhri S et al., 2025 Behavioural Pharmacology PMID:40622197 |
rodent (rat and mouse) | Limonene reduced paw swelling induced by carrageenan in rats and pain responses in the formalin test in mice; the effect was linked to the l-arginine/nitric oxide/cGMP/KATP channel pathway and involvement of opioid and benzodiazepine receptors. |
It is worth setting the boundary of this data directly. No anxiolytic effect of limonene has been demonstrated in humans. It has also not been shown that isolated limonene has anxiolytic effects in animals; the only available data from the elevated plus maze test showed the opposite effect, reducing the number of entries into the open arms even at a low dose.
What side effects have been reported after using White Widow?
None specifically for this name. Public compilations do not separate reports by individual strains, and under this term, there is one position from one producer in pharmacies, so even a report that might come in would go to the pool described by the batch number of the product, not the name of the plant given on the label.
The silence in the register is not evidence of the mildness of this dried flower, but rather a consequence of how this register was constructed. Anyone comparing two strains by the number of reports would compare the sales volume of individual batches, not the properties of the plant.
Reports of side effects are collected for a medicinal product with a batch number, not for the strain name, so the following pertains to hemp flower as a group of raw materials. The most frequently reported symptoms are dry mouth, red eyes, and increased heart rate. Less frequently described are dizziness upon rapid standing, daytime drowsiness, and temporary worsening of short-term memory, as well as anxiety that increases with dosage. A separate issue is medications taken concurrently, especially sedatives and those affecting coagulation: their assessment requires knowledge of the entire list of preparations, not just the description of the plant. We do not provide the frequency of these symptoms numerically because public compilations for hemp flower in Poland do not separate them by individual products.
At what temperature do the terpenes from the White Widow profile evaporate?
At very different temperatures, and that is the whole answer. The boiling temperatures of the compounds listed on this card diverge by over one hundred degrees, for three of the seven the public database does not provide a value that can be compared with the rest, and the vaporizer setting is not the temperature of the dried flower itself.
| Compound from the card | Boiling temperature record | Measurement conditions |
|---|---|---|
| pinene | 156.2 °C | atmospheric pressure |
| myrcene | 166.8 °C | atmospheric pressure |
| limonene | 177.8 °C | atmospheric pressure |
| caryophyllene | 257.5 °C | atmospheric pressure |
| humulene | 99.5 °C | under reduced pressure, 3 mmHg |
| nerolidol | 275-277 °C | pressure not specified |
| bisabolol | no record | database did not return a record |
Three of the seven positions fall out of comparison, and this is not a trivial matter. The record for humulene comes from a measurement conducted under reduced pressure, and then the substance boils lower because the threshold is lowered by the apparatus, not because the compound turned out to be more volatile. For nerolidol, there is one value, but without specified pressure, so the atmospheric value remains empty in the data instead of taking the conditions that no one measured. For bisabolol, the public database did not return any record, and the lack of a record means a lack of knowledge, not zero.
This is where the discrepancy between the compilations circulating on forums comes from: the same name sometimes gets an atmospheric value, sometimes a value from distillation conducted in a vacuum, and no one notes the difference. To compilations that provide values for one compound that are irreconcilable with each other, we dedicate a separate text, and to what and in what order escapes from heated raw material, another. Something else is the relationship between the number on the vaporizer display and what happens in the chamber with the material, and we dedicate our own text to that. The method of administration is determined by the attending physician, and the boiling table is not a guideline for that.
Which strains are related to White Widow?
None. In the lineage graph of this cluster, three cultivars list White Widow on the parent side: Delahaze, Jack Haze, and White Widow X. These are offspring, not siblings, and the list of strains sharing a parent with it remains empty, and here it is a correct result, not a gap in the data.
The reason lies in its own lineage. Both parents are regional categories, and the graph deliberately does not derive kinship from landraces: two plants described as Brazilian sativa may have nothing in common besides the continent. Additionally, each of these two terms appears in the entire graph exactly once, on the side of this one strain, so even if the categories counted as named plants, there would be no one to share a parent with. The strains that have White Widow listed higher in the tree are described separately: Delahaze and Jack Haze.
The closest name does not determine anything by itself. White Widow X has its parents recorded in the graph as White Widow and Cold Creek Kush, referencing the product page of a Canadian producer. This record thus indicates that some line by that name served as a parent, but it does not say whether it was the same plant that S-LAB sells today under this term, as the term carries several independently maintained lines. The Polish profile database adds its own trace: the position described in the title as White Widow X is held under the base term white-widow and under the card address without the letter X, causing the two names to merge into one record. The cluster maintains separate entries for them and separately describes the latter.
Frequently asked questions about the White Widow strain
Can White Widow be purchased without a prescription?
No. Hemp flower is dispensed in pharmacies by prescription from a doctor, in category Rpw, and the doctor writes a specific raw material on the prescription or allows a variant with a similar profile. Outside of this route, the pharmacy position under this name is not available.
How many producers currently supply this strain to Polish pharmacies?
One, S-LAB, and it is one registered position. At the time of compiling the list, the database described it as unavailable in circulation, which happens regularly given the five-year validity period of permits and variable supplies.
Why are there no percentage shares for the terpenes in this profile?
Because it is unknown what these shares refer to. Seven values from this strain card sum up to eighty-nine percent, and in the same database, six other positions exceed one hundred, which would be impossible with one fixed denominator.
Why is the THC content given as a range?
Because the producer’s declaration allows a deviation of one-tenth of the nominal value. For this position, it gives 16.2-19.8%, and only such a record corresponds to what the producer guarantees in the batch documentation.
Are White Widow and White Widow X the same strain?
In this cluster, these are two separate entries. The lineage graph records White Widow on the parent side of White Widow X, but does not determine whether it refers to the same clonal line, as more than one company maintains its own lines under this name.
Do studies on limonene indicate how this dried flower will act?
No. Both studies concern the pure compound administered to animals in doses calculated per kilogram of body weight, not the dried flower inhaled by humans, and predictions for the patient cannot be derived from them.
Hemp flower is a pharmaceutical raw material dispensed by prescription from a doctor in category Rpw. The material is informational in nature, describes the state of available data, and does not replace the advice of a doctor or pharmacist. The editorial text was prepared by the ubucha editorial team. The full catalog of dried flower available in our store is maintained in the dried flower category.
