No known drug interactions for the matched ingredients — not a guarantee none exist. Check your meds →
Dietary supplement

Full Spectrum Cramp Bark 500 mg Ingredients & Drug Interactions

by Swanson Premium Brand

Capsule Category: Botanical
No known interaction
The interaction bottom line No known interaction

Full Spectrum Cramp Bark 500 mg is a dietary supplement by Swanson Premium Brand with 1 active ingredient. Its ingredients are commonly taken for menstrual cramps, muscle spasms, general cramping pain.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.

HelloPharmacist Scorecard of Full Spectrum Cramp Bark 500 mg by Swanson Premium Brand

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: cramp bark, supplied as a full spectrum extract at 500 mg per capsule. Cramp bark is the dried bark of Viburnum opulus, a plant with a long history in traditional herbal medicine, though human studies on how well it works are scarce.

The capsule itself is made from gelatin, calcium palmitate, microcrystalline cellulose, and silica — all standard inactive ingredients that help hold the product together.

Does it work?

Insufficient evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Insufficient

There isn't enough reliable clinical evidence to rate this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: muscle comfort herb.
  • We looked for evidence on: Muscle cramps, Dysmenorrhea, Pregnancy-related leg cramps, muscle tension, spasms.
  • The closest evidence on file: Cramp Bark is rated "Insufficient Reliable Evidence To Rate" for Muscle cramps (Natural Medicines).
  • Also on file: Cramp Bark is rated "Insufficient Reliable Evidence To Rate" for Dysmenorrhea, Pregnancy-related leg cramps.

The evidence for cramp bark is thin. We have insufficient reliable evidence to say whether it works for muscle cramps, menstrual cramps (dysmenorrhea), pregnancy-related leg cramps, kidney stones, or diabetes.

That's not a claim that it doesn't work — it means human trials backing up its traditional uses haven't given us solid proof yet. If you're thinking about it for one of these reasons, talk it over with your doctor so you can make a plan that fits your situation.

The evidence, ingredient by ingredient Cramp Bark

How safe is it?

Some data gaps
Safety Information · database check
Some gaps

Safety data exists for these ingredients, but with some important gaps.

Why this rating?
  • We hold adverse-effect (side-effect) data for 0 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Cramp bark has been used in traditional medicine for a long time, but human safety data are limited, so caution is warranted. During pregnancy, safety is not established, so the data advise against it.

There isn't enough information to know whether it's safe during breastfeeding. No adverse effects are listed in our data, though that's partly because formal safety testing has been sparse.

If you're pregnant, nursing, or planning to become pregnant, check with your doctor or pharmacist before starting.

Side effects, ingredient by ingredient Cramp Bark

Meds to double-check

No known interactions
Known Interaction Concern · database check
No known interactions

No medication interactions are currently documented for the matched ingredients — that isn't a guarantee none exist.

Why this rating?
  • None of the 1 matched ingredient has a documented medication interaction on file.

No interactions are documented in our data for the ingredient we checked. That said, the evidence base for cramp bark's safety in humans is limited, so before you combine it with any prescription or over-the-counter medication, confirm with your doctor or pharmacist that it's okay for your individual situation.

The bottom line

Scorecard at a glanceFully disclosed formula with insufficient evidence for its stated purpose. No medication interactions are currently documented, and some safety-information gaps remain.

This is a single-ingredient herbal product with a long folk history but little formal human evidence for any of its claimed uses. If you're curious about cramp bark for muscle cramps, menstrual symptoms, or another reason, run it by your own doctor or pharmacist first — especially if you're pregnant, nursing, or on any medications.

They know your health picture and can help you decide if it's right for you.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jun 24, 2019.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Full Spectrum Cramp Bark 500 mg, straight from the product label.

Brand Swanson Premium Brand
Barcode (UPC) 087614111483
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Jun 24, 2019
DSLD ID 203971
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Full Spectrum Cramp Bark 500 mg by Swanson Premium Brand, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
UPC/BARCODE
087614111483
IngredientAmount% DV
Cramp Bark500 mg--

Other ingredients: Gelatin, Calcium Palmitate, Microcrystalline Cellulose, Silica

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements

Bringing wellness to the world since 1969

Muscle comfort herb

To reorder, call toll free 1-800-437-4148 or visit our website at www.swansonvitamins.com

FDA Statement of Identity

Herbal Supplement

Seals/Symbols

Guaranteed Purity & Potency

Precautions

Do not use if seal is broken.

Keep out of reach of children.

Warning: Do not take this product if you are pregnant or nursing.

Storage

Store in a cool, dry place.

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take one capsule two times per day with water.

See for yourself

Full Spectrum Cramp Bark 500 mg by Swanson Premium Brand label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

What’s inside

The Ingredients in Full Spectrum Cramp Bark 500 mg by Swanson Premium Brand

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Amounts shown are per serving.

Cramp Bark

No known
interactions
500 mg per serving

Cramp Bark is the dried bark of Viburnum opulus, traditionally used to ease muscle and menstrual cramps. Modern, high-quality human studies are very l...

Cramp Bark monograph & interactions

Other (inactive) ingredients: Gelatin, Calcium Palmitate, Microcrystalline Cellulose, Silica. These complete the product’s ingredient list but are not active constituents.

Interaction report

Full Spectrum Cramp Bark 500 mg by Swanson Premium Brand Drug Interactions

We don’t currently list any known drug interactions for the mapped ingredients in Full Spectrum Cramp Bark 500 mg. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.

The maker

Brand information

Manufacturer and brand details for Full Spectrum Cramp Bark 500 mg, from the product label.

Swanson Premium Brand

See all Swanson Premium Brand products
Name
Swanson Health Products
City
Fargo
State
ND
ZipCode
58104
Phone Number
1-800-437-4148
Web Address
www.swansonvitamins.com
Pharmacist Counseling Corner

Full Spectrum Cramp Bark 500 mg by Swanson Premium Brand: Common Questions

Does Full Spectrum Cramp Bark 500 mg by Swanson Premium Brand interact with any medications?
We do not currently list a known interaction for the mapped ingredients in Full Spectrum Cramp Bark 500 mg. This does not guarantee none exist, so confirm with your pharmacist.
How can one product interact with so many drugs?
Full Spectrum Cramp Bark 500 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take this while pregnant or nursing?
The data advise against cramp bark during pregnancy because safety isn't established. There also isn't enough information to know whether it's safe while breastfeeding. Talk with your doctor or pharmacist — they can help you weigh any potential benefits against what we don't know.
Does cramp bark actually work for muscle cramps?
We have insufficient reliable evidence to say. Cramp bark has a long history in traditional herbal medicine, but human studies proving it works for muscle cramps, menstrual cramps, or pregnancy-related leg cramps are sparse. Your doctor can talk through whether it might be worth a try as part of your approach.
What is cramp bark, and where does it come from?
Cramp bark is the dried bark of Viburnum opulus, a plant used in herbal traditions for centuries, especially in Europe. This product is a full spectrum extract — meaning it's concentrated from the whole bark rather than a single isolated compound.
Are there any side effects listed?
No adverse effects are listed in our data. That said, human safety research on cramp bark is limited, so side effects may exist but simply haven't been well documented. If you experience anything unusual after starting, let your doctor or pharmacist know.
Does this product have fillers or other ingredients besides cramp bark?
The capsule contains gelatin, calcium palmitate, microcrystalline cellulose, and silica — all standard inactive ingredients used to form and stabilize the supplement. The only active ingredient is cramp bark.

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

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Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Full Spectrum Cramp Bark 500 mg label
Go deeper

The Full Monographs Behind Full Spectrum Cramp Bark 500 mg’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Sources

Sources & How We Checked

Full Spectrum Cramp Bark 500 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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