Drug & supplement interaction

Sangre De Grado + Tasimelteon

Tasimelteon brand names: Hetlioz, Hetlioz Lq.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Sangre De Grado and Tasimelteon 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 label for Tasimelteon states a food rule worth keeping to, and 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

Sangre De Grado and Tasimelteon

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 Tasimelteon and Sangre De Grado 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 Sangre De Grado at all — not against Tasimelteon, 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.

Sangre De Grado safety at a glance

Sangre De Grado overall Use caution It has a long history of traditional use but limited safety data for supplements, so use cautiously.
Pregnancy Avoid There is not enough safety information, so avoid use during pregnancy.
Breastfeeding Avoid Safety while breastfeeding is unknown, so it is best to avoid it.

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

Still wondering about combining Tasimelteon and Sangre De Grado? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Sangre De Grado and Tasimelteon May Share a Side Effect

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.

  • Headache reported in 6.7% of FDA reports for Tasimelteon Additional detail

    Sangre De Grado

    “Orally, crofelemer (SP-303), a purified constituent of sangre de grado, seems to be well tolerated. No serious adverse effects have been reported in clinical studies. Mild gastrointestinal adverse effects, bronchitis, and headache have been reported in clinical research with oral crofelemer (SP-303).

    Topically, the sangre de grado constituent crofelemer can cause local pain and burning.”

    Sangre De Grado · Natural Medicines adverse-effect record, reported in acute bronchitis.

    6 sources cited
    1. 2784. Holodniy M, Koch J, Mistal M, et al. A double blind, randomized, placebo-controlled phase II study to assess the safety and efficacy of orally administered SP-303 for the symptomatic treatment of diarrhea in patients with AIDS. Am J Gastroenterol 1999;9 PubMed
    2. 2806. Dicesare D, Dupont HL, Mathewson JJ, et al. A double-blind randomized, placebo-controlled study of SP-303 (Provir) in the symptomatic treatment of acute diarrhea among travelers to Mexico and Jamaica. Infectious Diseases Society of America Annual Meetin
    3. 73090. DiCesare, D., DuPont, H. L., Mathewson, J. J., Ashley, D., Martinez-Sandoval, F., Pennington, J. E., and Porter, S. B. A double blind, randomized, placebo-controlled study of SP-303 (Provir) in the symptomatic treatment of acute diarrhea among travelers
    4. 94708. MacArthur RD, Hawkins T, Brown SJ, et al. Efficacy and safety of crofelemer for noninfectious diarrhea in HIV-seropositive individuals (ADVENT trial): a randomized, double-blind, placebo-controlled, two-stage study. HIV Clin Trials 2013;14(6):261-73. PubMed
    5. 94709. Mangel AW, Chaturvedi P. Evaluation of crofelemer in the treatment of diarrhea-predominant irritable bowel syndrome patients. Digestion 2008;78(4):180-6. PubMed
    6. 103246. Nee J, Salley K, Ludwig AG, et al. Randomized clinical trial: crofelemer treatment in women with diarrhea-predominant irritable bowel syndrome. Clin Transl Gastroenterol. 2019;10(12):e00110. PubMed

    “Orally, headache has been reported in some patients taking the sangre de grado constituent crofelemer (SP-303).”

    Sangre De Grado · Natural Medicines adverse-effect record, reported in cluster headache.

    1 source cited
    1. 103246. Nee J, Salley K, Ludwig AG, et al. Randomized clinical trial: crofelemer treatment in women with diarrhea-predominant irritable bowel syndrome. Clin Transl Gastroenterol. 2019;10(12):e00110. PubMed

    Tasimelteon

    Listed in the ADVERSE REACTIONS section of the FDA label for Tasimelteon, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

Reported for Sangre De Grado but not commonly for Tasimelteon: stomach pain, constipation, bloating or gas and diarrhea.

Effects for Tasimelteon come from the ADVERSE REACTIONS section of its FDA label; effects for Sangre De Grado come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 5,765 voluntary FDA FAERS reports for Tasimelteon 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.

How to take them

Some Tasimelteon Products Have a Food Rule — Sangre De Grado Should Not Break It

At least one FDA label for a product containing Tasimelteon says to take it on an empty stomach. Most supplements — Sangre De Grado included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Tasimelteon on its own and move Sangre De Grado to a meal later in the day.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Tasimelteon products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

2 DOSAGE AND ADMINISTRATION Indicated Population Dosage Form Body Weight Recommended Dosage Non-24 ( 2.2 ) Adults Capsules Not applicable 20 mg one hour prior to bedtime Nighttime sleep disturbances in SMS ( 2.3 ) Patients 16 years of age and older Capsules Not applicable 20 mg one hour prior to bedtime Pediatric Patients 3 to 15 years of age Oral Suspension ≤ 28 kg 0.7 mg/kg one hour before bedti

From the Dosage and Administration section of the FDA label we read for Tasimelteon — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Everything else you take

See Every Supplement That Interacts With Tasimelteon

This page covers Sangre De Grado only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Tasimelteon page lists 218 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: 1,4-butanediol (major), Activated Charcoal (major), Beer (major), Gamma-hydroxybutyrate (ghb) (major) and Grapefruit (major).

By severity: 9 major · 166 moderate · 43 minor.

From our pharmacist’s overview on the Tasimelteon page

“Tasimelteon (Hetlioz) resets the body clock in people with non-24-hour sleep-wake disorder, and the sleep aids they often reach for, melatonin and kava among them, sit on an interaction list that deserves real respect. Nine of the 218 ingredients on file rate major, mostly in two directions: sedatives like kava stack drowsiness onto a…”

Reviewed by 2 · Jul 18, 2026

Open the Tasimelteon interaction page

One more smart check

Taking Sangre De Grado as Part of a Dietary Supplement Product? Check It for Interactions

We hold 27 real supplement products containing Sangre De Grado, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Sangre De Grado. Even though Sangre De Grado itself has no known interaction with Tasimelteon, 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 Sangre De Grado and Tasimelteon 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 Sangre De Grado
Steady interest

#1,192 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Tasimelteon
Top half

#1,406 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 Sangre De Grado reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Sangre De Grado and Tasimelteon 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 Sangre De Grado

What is Sangre De Grado?

  • Diarrhea
  • Wound healing and skin sores
  • Digestive and stomach complaints
  • Insect bites and minor skin irritation
  • Sore throat and mouth ulcers

Sangre de Grado is a red tree sap from the Amazon rainforest used traditionally for diarrhea, wounds, and skin problems. Some of its compounds have been studied scientifically, and one purified ingredient (crofelemer) is used in a prescription anti-diarrhea drug, but the raw supplement itself has limited human research. Talk with a pharmacist or doctor before using it, especially if you are pregnant, breastfeeding, or have a health condition.

Croton lechleri · Euphorbiaceae · Red sap (latex) from the bark of the tree · Liquid sap, tincture, topical gel or cream, capsules, and a purified extract (crofelemer) used in some medicines

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

Sangre De Grado: dosing

There is no official, standardized dose for Sangre de Grado supplements. The right amount can depend on the form (liquid sap, tincture, gel, or capsule) and the concentration of the specific product.If you choose to use it, follow the directions on the product label and do not exceed the recommended amount.

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

Read the full Sangre De Grado monograph & all interactions
Medication

About Tasimelteon

What Is Tasimelteon Used For?

Brand names: Hetlioz, Hetlioz Lq

Tasimelteon capsules are approved to treat Non-24-Hour Sleep-Wake Disorder (Non-24) in adults. Non-24 is a condition where the body's internal clock does not align with the normal 24-hour day, causing sleep and wake times to shift continuously.

Hetlioz capsules are also approved to treat nighttime sleep disturbances in Smith-Magenis Syndrome (SMS) in patients 16 years of age and older. Hetlioz LQ oral suspension is approved specifically for nighttime sleep disturbances in SMS in pediatric patients ages 3 to 15 years.

Most-Reported Side Effects for Tasimelteon

From FAERS, the FDA’s public side-effect reporting system (5,770 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Insomnia 728 reports
Middle insomnia 414 reports
Somnolence 408 reports
Headache 386 reports
Nightmare 268 reports
See full Tasimelteon drug information
Keep checking

Other Drugs & Sangre De Grado

Browse every other medication we’ve checked against Sangre De Grado — 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
No interaction 2,829 drugs checked — show the list
Evidence & sources

Sangre De Grado References

The 9 references that drive our Sangre De Grado 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. Holodniy M, Koch J, Mistal M, et al. A double blind, randomized, placebo-controlled phase II study to assess the safety and efficacy of orally administered SP-303 for the symptomatic treatment of diarrhea in patients with AIDS. Am J Gastroenterol 1999;9 PubMed
  2. Safrin S, McKinley G, McKeough M, et al. Treatment of acyclovir-unresponsive cutaneous herpes simplex virus infection with topically applied SP-303. Antiviral Res 1994;25:185-92. PubMed
  3. Orozco-Topete R, Sierra-Madero J, Cano-Dominguez C, et al. Safety and efficacy of Virend for topical treatment of genital and anal herpes simplex lesions in patients with AIDS. Antiviral Res 1997;35:91-103. PubMed
  4. Dicesare D, Dupont HL, Mathewson JJ, et al. A double-blind randomized, placebo-controlled study of SP-303 (Provir) in the symptomatic treatment of acute diarrhea among travelers to Mexico and Jamaica. Infectious Diseases Society of America Annual Meetin
  5. Miller, M. J., Vergnolle, N., McKnight, W., Musah, R. A., Davison, C. A., Trentacosti, A. M., Thompson, J. H., Sandoval, M., and Wallace, J. L. Inhibition of neurogenic inflammation by the Amazonian herbal medicine sangre de grado. J.Invest Dermatol. 200 PubMed
  6. DiCesare, D., DuPont, H. L., Mathewson, J. J., Ashley, D., Martinez-Sandoval, F., Pennington, J. E., and Porter, S. B. A double blind, randomized, placebo-controlled study of SP-303 (Provir) in the symptomatic treatment of acute diarrhea among travelers
  7. MacArthur RD, Hawkins T, Brown SJ, et al. Efficacy and safety of crofelemer for noninfectious diarrhea in HIV-seropositive individuals (ADVENT trial): a randomized, double-blind, placebo-controlled, two-stage study. HIV Clin Trials 2013;14(6):261-73. PubMed
  8. Mangel AW, Chaturvedi P. Evaluation of crofelemer in the treatment of diarrhea-predominant irritable bowel syndrome patients. Digestion 2008;78(4):180-6. PubMed
  9. Nee J, Salley K, Ludwig AG, et al. Randomized clinical trial: crofelemer treatment in women with diarrhea-predominant irritable bowel syndrome. Clin Transl Gastroenterol. 2019;10(12):e00110. 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 Sangre De Grado and Tasimelteon Together: Common Questions

Is it safe to take Sangre De Grado with Tasimelteon?
We do not list a known interaction between Sangre De Grado and Tasimelteon. 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 Sangre De Grado and Tasimelteon have any of the same side effects?
Yes — our sources link each of them separately to one 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.
Should I take Sangre De Grado and Tasimelteon at the same time of day?
At least one FDA label for a product containing Tasimelteon says to take it on an empty stomach, and supplements are usually taken with a meal — so taking them together at breakfast is the easy mistake. Where that applies, keep Tasimelteon on its own and move Sangre De Grado to a meal later in the day. Food instructions belong to the product rather than the ingredient, so check the directions on your own box. This is about absorption, not an interaction.
Does Tasimelteon interact with any supplements?
Yes. Tasimelteon has documented interactions with 218 supplements in our database — Sangre De Grado is not one of them. The Tasimelteon interaction page linked on this page lists every one, ranked by severity.

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

Still Have a Question About Tasimelteon and Sangre De Grado?

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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.