Drug & supplement interaction

Camu Camu + Atenolol

Atenolol brand names: Tenormin, Atenix.

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

We found no known interaction between Camu Camu and Atenolol 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.

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Interaction report

Camu Camu and Atenolol

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 Atenolol and Camu Camu 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 Camu Camu at all — not against Atenolol, 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.

Camu Camu safety at a glance

Camu Camu overall Use caution Likely safe as a food, but high-dose supplements lack strong long-term safety data.
Pregnancy Avoid Not enough safety information, so it is best avoided in supplement form during pregnancy.
Breastfeeding Avoid Safety has not been studied, so it is best avoided in supplement form while breastfeeding.

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

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

What Atenolol’s Own FDA Label Lists

This is not an interaction — none of it involves Camu Camu. These are the most notable effects listed in the ADVERSE REACTIONS section of Atenolol’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 10 of them are worth acting on rather than waiting out — marked below.

  • Memory problems Worth acting on
  • A slow heartbeat Worth acting on
  • A heart attack Worth acting on
  • Blood clots Worth acting on
  • Hallucinations Worth acting on
  • Heart failure Worth acting on
  • Fainting Worth acting on
  • Wheezing Worth acting on
  • An irregular heartbeat Worth acting on
  • Confusion Worth acting on

Showing the 10 most notable of 34 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Atenolol. Read the label on DailyMed › Camu Camu’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Camu Camu side to compare — that is a limit of the record, not a statement that Camu Camu has no side effects.

From our Q&A

Questions About Camu Camu or Atenolol

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Camu Camu or Atenolol, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Atenolol

This page covers Camu Camu only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Atenolol page lists 143 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Indian Snakeroot (major) and Tyramine (major).

By severity: 5 major · 118 moderate · 20 minor.

From our pharmacist’s overview on the Atenolol page

“Atenolol lowers blood pressure and slows the heart, so I want you to treat this list with real care. Of the 143 supplements and herbs on file, 119 push on your blood pressure one way or another, either dropping it further alongside atenolol, as fish oil can, or working against it, as tyramine does.”

Reviewed by 2 · Jul 18, 2026

Open the Atenolol interaction page

One more smart check

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

We hold 732 real supplement products containing Camu Camu, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Camu Camu. Even though Camu Camu itself has no known interaction with Atenolol, 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 Camu Camu and Atenolol 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 Camu Camu
Top half

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

29 days ago today
Medication Atenolol
Top 25%

#539 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. Camu Camu is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Camu Camu reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Camu Camu and Atenolol records this page draws on were last updated June 22, 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 Camu Camu

What is Camu Camu?

  • Antioxidant support
  • Immune support
  • Vitamin C source
  • General wellness
  • Anti-inflammatory support

Camu camu is an Amazonian berry that is very high in vitamin C and plant antioxidants, which is why it is popular as an immune and antioxidant supplement. Human research is still limited, so most claims are not well proven. It is generally considered safe as a food or supplement for most people, but check with your pharmacist or doctor before starting it.

Myrciaria dubia · Myrtaceae · Fruit (and fruit pulp/skin) · Powder, capsules, juice, and drink mixes

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

Camu Camu: dosing

There is no official or standardized dose for camu camu. Products vary widely in strength and vitamin C content, so the right amount depends on the specific product.The safest approach is to follow the directions on the product label and not exceed them.

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

Read the full Camu Camu monograph & all interactions
Medication

About Atenolol

What Is Atenolol Used For?

Brand names: Tenormin, Atenix

Atenolol tablets are used to treat high blood pressure (hypertension) and angina pectoris (chest pain caused by narrowed coronary arteries). Lowering blood pressure reduces the risk of stroke and heart attack. Long-term use helps manage chronic chest pain.

Atenolol is also used in hemodynamically stable patients with a definite or suspected acute heart attack (myocardial infarction) to reduce the risk of cardiovascular death. Treatment is started as soon as the patient's condition allows, typically in a hospital setting.

See full Atenolol drug information
Keep checking

Other Drugs & Camu Camu

Browse every other medication we’ve checked against Camu Camu — 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 Camu Camu 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 Camu Camu list.

See the full Camu Camu interactions page
See every supplement checked against Atenolol, ranked by severity
Evidence & sources

Camu Camu References

The 2 sources that drive our Camu Camu monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Camu Camu is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Vitamin C - Health Professional Fact Sheet — NIH Office of Dietary Supplements Source
  2. Vitamin C — MedlinePlus Source

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 Camu Camu and Atenolol Together: Common Questions

Is it safe to take Camu Camu with Atenolol?
We do not list a known interaction between Camu Camu and Atenolol. 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.
Does Atenolol interact with any supplements?
Yes. Atenolol has documented interactions with 143 supplements in our database — Camu Camu is not one of them. The Atenolol 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

Camu Camu monograph Uses, safety profile, and every drug interaction in one place Atenolol drug information The full plain-English guide to this medication Atenolol supplement interactions Every supplement checked against Atenolol, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Atenolol and Camu Camu?

Our pharmacists answer your medication & supplement questions — free.

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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.