Drug & supplement interaction

Parsnip + Asfotase Alfa

Asfotase Alfa brand name: Strensiq.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Parsnip and Asfotase Alfa in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Parsnip and Asfotase Alfa

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Asfotase Alfa and Parsnip in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

Worth understanding: our licensed dataset holds no drug-interaction record for Parsnip at all — not against Asfotase Alfa, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Parsnip safety at a glance

Parsnip overall Use caution Safe as a food, but its leaves, sap, and seeds contain compounds that can cause skin reactions with sun exposure.
Pregnancy Use caution Fine as a normal food, but avoid concentrated supplement or medicinal amounts due to lack of safety data.
Breastfeeding Use caution Safe as a food, but the safety of medicinal or concentrated amounts is not known.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Asfotase Alfa and Parsnip? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Parsnip and Asfotase Alfa May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Swelling Additional detail

    Parsnip

    “Topically, contact dermatitis and phototoxic reactions, including skin blisters and later hyperpigmentation, have occurred following exposure to parsnip sap or fresh parsnip root and exposure to sunlight or UV-A light from a sunbed. Light-skinned people may be particularly susceptible to these reactions.

    A case report describes a 51-year-old male who developed rashes on his hands after preparing parsnip.”

    Parsnip · Natural Medicines adverse-effect record, reported in dermatitis.

    6 sources cited
    1. 10071. Ivie GW, Holt DL, Ivey MC. Natural toxicants in human foods: psoralens in raw and cooked parsnip root. Science 1981;213:909-10.. PubMed
    2. 68289. Lutchman, L., Inyang, V., and Hodgkinson, D. Phytophotodermatitis associated with parsnip picking. J.Accid.Emerg.Med. 1999;16(6):453-454. PubMed
    3. 68291. Aberer, W. Occupational dermatitis from organically grown parsnip (Pastinaca sativa L.). Contact Dermatitis 1992;26(1):62.
    4. 68295. Bang, Pedersen N. and Pla Arles, U. B. Phototoxic reaction to parsnip and UV-A sunbed. Contact Dermatitis 1998;39(2):97. PubMed
    5. 111192. White JML, Pink AE. English Sunday lunch dermatitis: Allergic contact dermatitis to parsnip, carrot, fennel (and ivy). Contact Dermatitis. 2020 Oct;83(4):317-8. PubMed
    6. 111193. Lafon A, Boulard C. Perioral phytophotodermatitis induced by parsnip mash. Contact Dermatitis. 2020 Oct;83(4):318-9. PubMed

    Asfotase Alfa

    Listed in the ADVERSE REACTIONS section of the FDA label for Asfotase Alfa. Read the label on DailyMed ›

  • A skin rash Additional detail

    Parsnip

    “Topically, contact dermatitis and phototoxic reactions (including skin blisters) are possible following exposure to parsnip sap or fresh parsnip root and exposure to sunlight. Allergic contact dermatitis can occur but is rare.”

    Parsnip · Natural Medicines adverse-effect record, reported in dermatitis.

    4 sources cited
    1. 10071. Ivie GW, Holt DL, Ivey MC. Natural toxicants in human foods: psoralens in raw and cooked parsnip root. Science 1981;213:909-10.. PubMed
    2. 68289. Lutchman, L., Inyang, V., and Hodgkinson, D. Phytophotodermatitis associated with parsnip picking. J.Accid.Emerg.Med. 1999;16(6):453-454. PubMed
    3. 68291. Aberer, W. Occupational dermatitis from organically grown parsnip (Pastinaca sativa L.). Contact Dermatitis 1992;26(1):62.
    4. 68295. Bang, Pedersen N. and Pla Arles, U. B. Phototoxic reaction to parsnip and UV-A sunbed. Contact Dermatitis 1998;39(2):97. PubMed

    Asfotase Alfa

    Listed in the ADVERSE REACTIONS section of the FDA label for Asfotase Alfa. Read the label on DailyMed ›

Effects for Asfotase Alfa come from the ADVERSE REACTIONS section of its FDA label; effects for Parsnip come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 9,959 voluntary FDA FAERS reports for Asfotase Alfa that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

One more smart check

Taking Parsnip as Part of a Dietary Supplement Product? Check It for Interactions

We hold 38 real supplement products containing Parsnip, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Parsnip. Even though Parsnip itself has no known interaction with Asfotase Alfa, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Parsnip and Asfotase Alfa Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Parsnip
Steady interest

#1,279 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Asfotase Alfa
Top half

#823 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Parsnip reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Parsnip and Asfotase Alfa records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Parsnip

What is Parsnip?

  • Digestive support
  • Mild diuretic ('water pill') effect
  • Nutritional/dietary fiber source
  • Traditional kidney and urinary support
  • General wellness

Parsnip is mainly a nutritious root vegetable that is safe and healthy as part of a normal diet. Its use as a concentrated supplement or herbal remedy is not well studied, and certain parts of the plant can make skin very sensitive to sunlight. Talk to your pharmacist or doctor before using parsnip in any medicinal or high-dose form.

Pastinaca sativa · Apiaceae · Root, leaves, seeds, and essential oil · Whole root (food), cooked vegetable, juice, dried seeds, and rarely supplements or essential oil

An interaction check asks whether these two react with each other — it does not ask whether Parsnip is a good idea for someone in your situation. Here is what our Parsnip record says about it on its own.

Parsnip: dosing

There is no established medicinal dose for parsnip. As a food, it is simply eaten as a vegetable in normal serving amounts.If you choose to use a parsnip supplement, juice, or extract, there is no standardized dose backed by research.

From our Parsnip monograph — the full record covers uses, side effects and every documented interaction.

Read the full Parsnip monograph & all interactions
Medication

About Asfotase Alfa

What Is Asfotase Alfa Used For?

Brand name: Strensiq

Strensiq (asfotase alfa), given as a subcutaneous injection, is approved to treat perinatal/infantile-onset and juvenile-onset hypophosphatasia (HPP) — a rare genetic disorder in which the body lacks enough of an enzyme called TNSALP, leading to problems with bone mineralization, rickets, bone deformity, and muscle weakness.

HPP can present at birth or in childhood. Strensiq is the specific brand approved for these forms of the disease. Safety and effectiveness have been established in pediatric patients across both onset types.

Most-Reported Side Effects for Asfotase Alfa

From FAERS, the FDA’s public side-effect reporting system (9,959 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Injection site pain 1,327 reports
Fatigue 952 reports
Injection site erythema 869 reports
Injection site reaction 747 reports
Arthralgia 665 reports
See full Asfotase Alfa drug information
Keep checking

Other Drugs & Parsnip

Browse every other medication we’ve checked against Parsnip — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

We also checked Parsnip against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Parsnip list.

See the full Parsnip interactions page
See every supplement checked against Asfotase Alfa, ranked by severity
Evidence & sources

Parsnip References

The 6 references that drive our Parsnip monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Ivie GW, Holt DL, Ivey MC. Natural toxicants in human foods: psoralens in raw and cooked parsnip root. Science 1981;213:909-10.. PubMed
  2. Lutchman, L., Inyang, V., and Hodgkinson, D. Phytophotodermatitis associated with parsnip picking. J.Accid.Emerg.Med. 1999;16(6):453-454. PubMed
  3. Aberer, W. Occupational dermatitis from organically grown parsnip (Pastinaca sativa L.). Contact Dermatitis 1992;26(1):62.
  4. Bang, Pedersen N. and Pla Arles, U. B. Phototoxic reaction to parsnip and UV-A sunbed. Contact Dermatitis 1998;39(2):97. PubMed
  5. White JML, Pink AE. English Sunday lunch dermatitis: Allergic contact dermatitis to parsnip, carrot, fennel (and ivy). Contact Dermatitis. 2020 Oct;83(4):317-8. PubMed
  6. Lafon A, Boulard C. Perioral phytophotodermatitis induced by parsnip mash. Contact Dermatitis. 2020 Oct;83(4):318-9. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Parsnip and Asfotase Alfa Together: Common Questions

Is it safe to take Parsnip with Asfotase Alfa?
We do not list a known interaction between Parsnip and Asfotase Alfa. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Parsnip and Asfotase Alfa have any of the same side effects?
Yes — our sources link each of them separately to 2 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Parsnip monograph Uses, safety profile, and every drug interaction in one place Asfotase Alfa drug information The full plain-English guide to this medication Asfotase Alfa supplement interactions Every supplement checked against Asfotase Alfa, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 6 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Asfotase Alfa and Parsnip?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.