Drug & supplement interaction

Mesoglycan + Atazanavir, Cobicistat

Atazanavir, Cobicistat brand name: Evotaz.

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 Mesoglycan and Atazanavir, Cobicistat 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 Atazanavir, Cobicistat 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

Mesoglycan and Atazanavir, Cobicistat

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 Atazanavir, Cobicistat and Mesoglycan 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.

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.

Mesoglycan safety at a glance

Mesoglycan overall Use caution Generally tolerated in studies, but it can affect blood clotting and lacks long-term safety data.
Pregnancy Avoid There is not enough safety information, so it is best avoided during pregnancy.
Breastfeeding Avoid Safety while breastfeeding is unknown, so avoid use.

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

Still wondering about combining Atazanavir, Cobicistat and Mesoglycan? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Atazanavir, Cobicistat

Interactions in our licensed database are recorded against drug classes, not just single drug names. Atazanavir, Cobicistat is filed under 7 classifications — including protease inhibitors (pis), cytochrome p450 2c9 (cyp2c9) inhibitors, cytochrome p450 1a2 (cyp1a2) inhibitors. Mesoglycan has documented interactions with 2 drug classes — the most serious being anticoagulant/antiplatelet drugs (moderate) and thrombolytic drugs (moderate) — and none of Atazanavir, Cobicistat’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Mesoglycan Does Interact With Other Medications

Mesoglycan has 122 moderate known drug interactions in our database — Atazanavir, Cobicistat isn’t one of them. If you take anything else, check it against the full list below.

Moderate 122 No known interaction 2,708 (incl. Atazanavir, Cobicistat)
Taking anything else?

Check Another of Your Medications Against Mesoglycan

Covers the 2,830 medications we’ve checked against Mesoglycan. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Mesoglycan and Atazanavir, Cobicistat 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.

  • Diarrhea / Vomiting / Nausea Additional detail

    Mesoglycan

    “Orally, mesoglycan seems to be well tolerated. Some adverse effects reported in clinical studies include nausea, vomiting, epigastric pain, dyspepsia, heartburn, headache, diarrhea, and local cutaneous reactions.

    However, there is some concern about potential contamination. Mesoglycan is derived from raw animal tissues gathered from slaughterhouses, possibly from sick or diseased animals.”

    Mesoglycan · Natural Medicines adverse-effect record, reported in cluster headache.

    6 sources cited
    1. 6629. Raso AM, Maggio D, Trogolo M, et al. [Effectiveness of mesoglycan therapy in patients with ischemia of the lower limbs. Preliminary results of a new therapeutic protocol]. Minerva Cardioangiol 1997;45:383-92.
    2. 97778. Viliani T, Scarselli M, Pieri A, Gatti M, Santini M, Pasquetti P. Pharmacological treatment of mechanical edema: a randomized controlled trial about the effects of mesoglycan. Eur J Phys Rehabil Med. 2009;45(1):21-9.
    3. 97779. Gossetti B, Antignani PL, Jabbour J, Martinelli O. Flow-mediated dilation benefits of mesoglycan in peripheral artery disease. Int Angiol. 2015;34(4):398-406.
    4. 103265. Valvano A, Bosso G, Apuzzi V, Riccone F, Saccá L, Oliviero U. Mesoglycan improves vascular reactivity and insulin sensitivity in patients with metabolic syndrome. Atherosclerosis. 2015;243(2):407-13. PubMed
    5. 6620. Nationwide alert on hallmark labs injectable adrenal cortex extract. FDA. Available at: www.fda.gov/bbs/topics/NEWS/NEW00539.html
    6. 1825. Lewis CJ. Letter to reiterate certain public health and safety concerns to firms manufacturing or importing dietary supplements that contain specific bovine tissues. FDA. Available at: www.cfsan.fda.gov/~dms/dspltr05.html.

    “Orally, mesoglycan has been reported to cause nausea, vomiting, epigastric pain, dyspepsia, heartburn, and diarrhea.”

    Mesoglycan · Natural Medicines adverse-effect record, reported in diarrhea.

    3 sources cited
    1. 6629. Raso AM, Maggio D, Trogolo M, et al. [Effectiveness of mesoglycan therapy in patients with ischemia of the lower limbs. Preliminary results of a new therapeutic protocol]. Minerva Cardioangiol 1997;45:383-92.
    2. 97779. Gossetti B, Antignani PL, Jabbour J, Martinelli O. Flow-mediated dilation benefits of mesoglycan in peripheral artery disease. Int Angiol. 2015;34(4):398-406.
    3. 103265. Valvano A, Bosso G, Apuzzi V, Riccone F, Saccá L, Oliviero U. Mesoglycan improves vascular reactivity and insulin sensitivity in patients with metabolic syndrome. Atherosclerosis. 2015;243(2):407-13. PubMed

    Atazanavir, Cobicistat

    Listed in the ADVERSE REACTIONS section of the FDA label for Atazanavir, Cobicistat. Read the label on DailyMed ›

  • Headache Additional detail

    Mesoglycan

    “Orally, mesoglycan has been reported to cause headache.”

    Mesoglycan · Natural Medicines adverse-effect record, reported in cluster headache.

    1 source cited
    1. 6629. Raso AM, Maggio D, Trogolo M, et al. [Effectiveness of mesoglycan therapy in patients with ischemia of the lower limbs. Preliminary results of a new therapeutic protocol]. Minerva Cardioangiol 1997;45:383-92.

    Atazanavir, Cobicistat

    Listed in the ADVERSE REACTIONS section of the FDA label for Atazanavir, Cobicistat. Read the label on DailyMed ›

Reported for Mesoglycan but not commonly for Atazanavir, Cobicistat: stomach upset, heartburn, hair loss and swelling.

Effects for Atazanavir, Cobicistat come from the ADVERSE REACTIONS section of its FDA label; effects for Mesoglycan come from the Natural Medicines adverse-effect record, quoted above. 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 Atazanavir, Cobicistat Products Have a Food Rule — Mesoglycan Should Not Break It

At least one FDA label for a product containing Atazanavir, Cobicistat says to take it with food. If you take Mesoglycan on an empty stomach out of habit, keep them separate — and take Atazanavir, Cobicistat with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Atazanavir, Cobicistat 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.

(2.1) • Recommended dosage: One tablet once daily, taken orally with food in adults and pediatric patients weighing at least 35 kg.

From the Dosage and Administration section of the FDA label we read for Atazanavir, Cobicistat — 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 Atazanavir, Cobicistat

This page covers Mesoglycan only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Atazanavir, Cobicistat page lists 152 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Grapefruit (major), St. John's Wort (major), Acacia Rigidula (moderate) and Adrafinil (moderate).

By severity: 3 major · 107 moderate · 42 minor.

From our pharmacist’s overview on the Atazanavir, Cobicistat page

“Evotaz (atazanavir with cobicistat) treats HIV, and its effectiveness depends on steady blood levels, so I read this list of 152 supplements and herbs carefully rather than casually. Only three carry a major rating, but those three deserve your attention first: St.”

Reviewed by 2 · Jul 18, 2026

Open the Atazanavir, Cobicistat interaction page

How much people look this up

Where Mesoglycan and Atazanavir, Cobicistat 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 Mesoglycan
Top half

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

29 days ago today
Medication Atazanavir, Cobicistat
Steady interest

#1,902 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 Mesoglycan reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Mesoglycan and Atazanavir, Cobicistat 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 Mesoglycan

What is Mesoglycan?

  • Vein health and chronic venous insufficiency
  • Leg ulcers
  • Peripheral artery disease and leg pain
  • Reducing blood clot risk
  • Hemorrhoids

Mesoglycan is a blend of natural sugar-protein compounds (glycosaminoglycans, including heparan sulfate and dermatan sulfate) taken from animal tissue and used mainly for blood vessel and circulation problems. Some small studies suggest possible benefit for vein-related conditions, but the overall evidence is limited and not strong. Because it can affect blood clotting, talk to your doctor or pharmacist before using it.

Glycosaminoglycans extracted from porcine (pig) intestinal mucosa · Tablets, capsules

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

Mesoglycan: dosing

There is no official, standardized dose of mesoglycan, and products can differ from one another. In studies it has been given by mouth in divided daily doses, and sometimes by injection in medical settings.If you use a mesoglycan product, follow the directions on the label and do not exceed the recommended amount.

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

Read the full Mesoglycan monograph & all interactions
Medication

About Atazanavir and Cobicistat

What Is Atazanavir and Cobicistat Used For?

Brand name: Evotaz

Evotaz (atazanavir/cobicistat) is used to treat HIV-1 infection. It must always be taken together with other antiretroviral medicines — it is not a complete regimen on its own. It is approved for adults and for pediatric patients who weigh at least 35 kg.

In patients who have been on HIV treatment before (treatment-experienced), how well Evotaz works depends on how much resistance to protease inhibitors the virus has already developed. Your prescriber will review this before starting you on Evotaz.

See full Atazanavir and Cobicistat drug information
Keep checking

Other Drugs & Mesoglycan

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

0Major
122Moderate
0Minor
2,707No known interaction
122 Moderate 2,707 No interaction
Moderate

122 interactions

Showing 60 of 122 moderate interactions — see all 122 on the Mesoglycan page.

No interaction 2,707 drugs checked — show the list

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

Showing the 60 most looked-up of 2,707 medications checked with no known interaction — see the full Mesoglycan list.

See the full Mesoglycan interactions page
See every supplement checked against Atazanavir, Cobicistat, ranked by severity
Evidence & sources

Mesoglycan References

The 26 references that drive our Mesoglycan 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. Lewis CJ. Letter to reiterate certain public health and safety concerns to firms manufacturing or importing dietary supplements that contain specific bovine tissues. FDA. Available at: www.cfsan.fda.gov/~dms/dspltr05.html.
  2. Nationwide alert on hallmark labs injectable adrenal cortex extract. FDA. Available at: www.fda.gov/bbs/topics/NEWS/NEW00539.html
  3. Laurora G, Cesarone MR, Belcaro G, et al. [Control of the progress of arteriosclerosis in high risk subjects treated with mesoglycan. Measuring the intima media]. Minerva Cardioangiol 1998;46:41-7.
  4. Raso AM, Maggio D, Trogolo M, et al. [Effectiveness of mesoglycan therapy in patients with ischemia of the lower limbs. Preliminary results of a new therapeutic protocol]. Minerva Cardioangiol 1997;45:383-92.
  5. Blardi P, Messa G, Puccetti L, et al. [Effects on the coagulation-fibrinolysis system of a single oral dose of mesoglycan at the beginning and at the end of a prolonged treatment in man]. Recenti Prog Med 1995;86:282-9.
  6. Lotti T, Celasco G, Tsampau D, et al. Mesoglycan treatment restores defective fibrinolytic potential in cutaneous necrotizing venulitis. Int J Dermatol 1993;32:368-71. PubMed
  7. Ambrosio LA, Marchese G, Filippo A, et al. The effect of mesoglycan in patients with cerebrovascular disease: a psychometric evaluation. J Int Med Res 1993;21:138-46. PubMed
  8. Orlandi G, Viapiano F, Massetani R, et al. Clinical-instrumental evaluation of the effects of mesoglycan sulphate in chronic vascular encephalopathy. Acta Neurol (Napoli) 1991;13:255-60.
  9. Abate G, Berenga A, Caione F, et al. [Controlled multicenter study on the therapeutic effectiveness of mesoglycan in patients with cerebrovascular disease]. Minerva Med 1991;82:101-5.
  10. Prandoni P, Cattelan AM, Carta M. [Long-term sequelae of deep venous thrombosis of the legs. Experience with mesoglycan]. Ann Ital Med Int 1989;4:378-85.
  11. Cazzato G, Zorzon M, Mase G, et al. [Mesoglycan in acute focal cerebral ischemia]. Riv Neurol 1989;59:121-6.
  12. Vittoria A, Messa GL, Frigerio C, et al. Effect of a single dose of mesoglycan on the human fibrinolytic system, and the profibrinolytic action of nine daily doses. Int J Tissue React 1988;10:261-6.
  13. Postiglione A, De Simone B, Rubba P, et al. Effect of oral mesoglycan on plasma lipoprotein concentration and on lipoprotein lipase activity in primary hyperlipoproteinemia. Pharmacol Res Commun 1984;16:1-8. PubMed
  14. Arosio E, Ferrari G, Santoro L, et al. A placebo-controlled, double-blind study of mesoglycan in the treatment of chronic venous ulcers. Eur J Vasc Endovasc Surg 2001;22:365-72. PubMed
  15. Nenci, G. G., Gresele, P., Ferrari, G., Santoro, L., and Gianese, F. Treatment of intermittent claudication with mesoglycan--a placebo-controlled, double-blind study. Thromb.Haemost. 2001;86(5):1181-1187. DOI

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 Mesoglycan and Atazanavir, Cobicistat Together: Common Questions

Is it safe to take Mesoglycan with Atazanavir, Cobicistat?
We do not list a known interaction between Mesoglycan and Atazanavir, Cobicistat. 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 Mesoglycan and Atazanavir, Cobicistat have any of the same side effects?
Yes — our sources link each of them separately to 4 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 Mesoglycan and Atazanavir, Cobicistat at the same time of day?
At least one FDA label for a product containing Atazanavir, Cobicistat says to take it with food. If you take Mesoglycan on an empty stomach out of habit, keep them separate and take Atazanavir, Cobicistat with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Atazanavir, Cobicistat products can differ — so check the directions on your own box. This is about absorption, not an interaction.
How was the Mesoglycan and Atazanavir, Cobicistat combination checked?
Interactions in our licensed database are recorded against drug classes. Atazanavir, Cobicistat is filed under 7 classifications, and Mesoglycan has documented interactions with 2 drug classes — none of Atazanavir, Cobicistat's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Mesoglycan interact with any other medications?
Yes. Mesoglycan has 122 documented drug interactions in our database — Atazanavir, Cobicistat is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Atazanavir, Cobicistat interact with any supplements?
Yes. Atazanavir, Cobicistat has documented interactions with 152 supplements in our database — Mesoglycan is not one of them. The Atazanavir, Cobicistat interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Mesoglycan monograph Uses, safety profile, and every drug interaction in one place Atazanavir and Cobicistat drug information The full plain-English guide to this medication Atazanavir, Cobicistat supplement interactions Every supplement checked against Atazanavir, Cobicistat, 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 26 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

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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.