Interactions on record — worth a quick check against your medications. Based on 2 of 5 ingredients. Check your meds →
Dietary supplement

Optimal PC Ingredients & Drug Interactions

by Seeking Health

Optimal PC label
See full label image
Liquid Category: Fat/fatty Acid
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Optimal PC against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Optimal PC is a dietary supplement by Seeking Health with 5 active ingredients. Its ingredients are commonly taken for cooking and frying, skin moisturizing, hair and scalp care.Based on those ingredients, 86 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Sunflower Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Optimal PC by Seeking Health

Ask about any prescription or over-the-counter medication and we check it for interactions with Optimal PC by Seeking Health — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Optimal PC by Seeking Health

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

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 27, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 2 of its 7 active ingredients.
  • “Phospholipid Complex (Combination)” is a proprietary blend — the label gives one combined amount (5,200 mg) without saying how much of each component you get.

Optimal PC contains 7 active ingredients: sunflower oil, phosphatidylcholine, and a phospholipid complex that breaks down into phosphatidylethanolamine, phosphatidylinositol, and minor glycolipids. Phosphatidylcholine is a type of fat found naturally in cells and is the main component here — it's involved in cell structure and nerve function.

Sunflower oil contributes additional fats and is included as a fat source. There are no inactive ingredients listed.

Does it work?

Not established
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
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use.

Why this rating?
  • The label markets this product for: cognitive health and cellular membrane support.
  • We looked for evidence on: Memory, Alzheimer disease, Dementia, Age-related cognitive decline, Brain function.
  • The closest evidence on file: Phosphatidylcholine is rated "Insufficient Reliable Evidence To Rate" for Alzheimer disease (Natural Medicines).
  • Also on file: Phosphatidylcholine is rated "Insufficient Reliable Evidence To Rate" for Memory, Dementia.

Sunflower oil shows possibly effective evidence for high cholesterol (hypercholesterolemia) and coronary heart disease. Phosphatidylcholine shows possibly effective evidence for ulcerative colitis, though evidence for nonalcoholic fatty liver disease, alcohol-related liver disease, Alzheimer disease, and anxiety is insufficient to rate.

The other components haven't been rated for specific conditions in our data.

The evidence, ingredient by ingredient Sunflower Oil Phosphatidylcholine

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Sunflower oil is generally well tolerated in normal dietary amounts, though people allergic to the ragweed family (sunflower, ragweed, chrysanthemums, daisies, marigolds) may rarely react — but sunflower oil's protein content is very low. Phosphatidylcholine is generally well tolerated, but high doses can cause bloating, diarrhea, nausea, vomiting, altered taste, itching, and sweating; doses as low as 30 grams daily have caused digestive upset.

For pregnancy, sunflower oil is likely safe, but choline is needed in pregnancy and supplement safety beyond food sources isn't well studied — talk with your doctor. Breastfeeding safety for phosphatidylcholine supplements isn't well established — speak with your healthcare provider first.

Side effects, ingredient by ingredient Sunflower Oil Phosphatidylcholine

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 2 matched ingredients can interact with medications — Sunflower Oil.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 86 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take diabetes medications (like metformin, sulfonylureas, or insulin), double-check with your doctor or pharmacist before starting — sunflower oil is documented to potentially reduce their effectiveness and may raise your blood sugar. No other medication interactions are documented in our data for the ingredients we could check.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

If you have type 2 diabetes or high cholesterol, this product might be worth discussing with your doctor — sunflower oil has some evidence for cholesterol and heart health. But if you take diabetes medication, your doctor needs to know before you start, because the sunflower oil could affect how well those drugs work.

Phosphatidylcholine may bother your stomach at higher doses. Run this by your own doctor or pharmacist before adding it to your routine.

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

Assessment coverage: 2 of 7 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 25, 2018.

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 Optimal PC, straight from the product label.

Brand Seeking Health
Barcode (UPC) 700580723541
Net contents 8 fl. Oz.; 240 mL
Market status On market
Date entered into DSLD Jun 25, 2018
DSLD ID 174731
Product type Fat/fatty Acid
Supplement form Liquid
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years), Dairy Free
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 Optimal PC by Seeking Health, 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:
8 mL
Maximum serving Sizes:
8 mL
Servings per container
30
UPC/BARCODE
700580723541
IngredientAmount% DV
Calories45 Calorie(s)--
Total Carbohydrates1 Gram(s)1%
Calories from Fat40 Calorie(s)--
Saturated Fat1 Gram(s)5%
Total Fat4.5 Gram(s)7%
Polyunsaturated Fat2.5 Gram(s)--
Monounsaturated Fat1 Gram(s)--
Sunflower Oil0 NP--
Phosphatidylcholine0 NP--
Phospholipid Complex (Combination)5200 mg--
Phosphatidylethanolamine0 NP--
Phosphatidylinositol0 NP--
minor Glycolipids0 NP--

Other ingredients: None

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.
Suggested/Recommended/Usage/Directions

Suggested Use: Shake lightly before each use. Take 2 teaspoons (8 ml) once daily with food, preferably in the morning or afternoon. Use as directed by your healthcare professional.

Storage

Storage: Store in a cool, dry place away from direct sunlight. Refrigerate for maximum potency and longevity.

Formula

Optimal PC uses non-GMO Sunflower Lecithin to deliver 5,200 mg of blended Phospholipids.

Phospholipid complex

General Statements

Phospholipids are essential components of healthy cellular membranes and may help support cognitive health.

Optimal PC meets or exceeds cGMP standards.

Physician formulated

Not a significant source of cholesterol, sugar, or protein.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Formulation

Does Not Contain: Milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy, artificial colors or artificial sweeteners.

General

PC-8OZ-LIQUID REV. 071717

FDA Statement of Identity

Dietary Supplement

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Optimal PC by Seeking Health label

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

Optimal PC label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Optimal PC by Seeking Health

These are the 5 active ingredients this product is made of. Select any to open its full monograph.

Serving size8 mL Dosage formLiquid Servings per container30 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Phospholipid Complex (Combination)

5200 mg per serving

Other (inactive) ingredients: None. These complete the product’s ingredient list but are not active constituents.

Interaction report

Optimal PC by Seeking Health Drug Interactions

Want to check YOUR meds against Optimal PC?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
86Drugs
86 Moderate

Ingredients driving the most interactions

Sunflower Oil 86

Individual Drug Interactions

The ingredients in Optimal PC interact with 86 drugs. Click any drug to see the details.

1 of the 5 ingredients in Optimal PC interact with drugs. Each result below shows which ingredient is responsible. Sunflower Oil

Each ingredient & the kinds of drugs it affects

For each ingredient in Optimal PC with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Sunflower Oil1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, sunflower oil might decrease the effectiveness of antidiabetes medications.
A diet using sunflower oil as a fat source can cause increased fasting blood glucose levels in patients with type 2 diabetes. Dose adjustments to diabetes medications might be necessary.

Likelihood Possible Evidence B
Sunflower Oil full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Optimal PC, from the product label.

Seeking Health

See all Seeking Health products
Name
Seeking Health
Street Address
3140 Mercer Ave
City
Bellingham
State
WA
ZipCode
98225
Phone Number
(800) 547-9812
Web Address
www.seekinghealth.com
Pharmacist Counseling Corner

Optimal PC by Seeking Health: Common Questions

Does Optimal PC by Seeking Health interact with any medications?
Yes. Based on its ingredients, Optimal PC has a known interaction with 86 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Optimal PC contains 5 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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 if I'm allergic to sunflower seeds?
Sunflower oil can theoretically cause allergic reactions in people with sensitivity to the ragweed family (which includes sunflowers), but the protein content is very low. One case report even found an allergic response didn't happen despite severe seed allergy. Still, if you have a known sunflower seed allergy, talk with your doctor or pharmacist first — your individual risk is best assessed with them.
Is this safe while pregnant?
Sunflower oil is likely safe in pregnancy. Phosphatidylcholine contains choline, which is needed in pregnancy, but supplement safety beyond what's in food isn't well studied. Talk with your doctor before taking this product during pregnancy — they can personalize the advice based on your health.
Can it upset my stomach?
Yes — phosphatidylcholine can cause bloating, diarrhea, nausea, vomiting, altered taste, itching, and sweating, especially at high doses. Even smaller doses have triggered these side effects in some people. If you have a sensitive stomach, start cautiously and mention it to your doctor or pharmacist.
What is phosphatidylcholine supposed to do?
Phosphatidylcholine is a naturally occurring fat that is a major component of cell membranes and involved in nerve function. In this product it's studied mainly for ulcerative colitis, where it shows possibly effective evidence. Evidence for other conditions like fatty liver disease or Alzheimer disease is not yet established.
Does this help with cholesterol or heart health?
Sunflower oil in this product shows possibly effective evidence for high cholesterol and coronary heart disease. That means some evidence supports it, but it isn't a proven treatment — talk with your doctor about whether it fits into your overall plan.

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

Not sure if Optimal PC is safe with your meds?

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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.

Optimal PC label
Go deeper

The Full Monographs Behind Optimal PC’s Ingredients

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

Herb & supplement monograph

Sunflower Oil

Interacts with 86 drugs

Sunflower oil is a common edible vegetable oil rich in unsaturated fats and vitamin E that most people can use safely as part of a normal diet. As a food it is generally regarded as safe, an...

Read the full Sunflower Oil monograph → Herb & supplement monograph

Phosphatidylcholine

Phosphatidylcholine is a phospholipid that is part of every cell membrane and a source of choline. People take it for liver, brain, and gut health, but solid human evidence is limited for mo...

Read the full Phosphatidylcholine monograph →
Sources

Sources & How We Checked

Optimal PC'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.

The 17 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Sunflower Oil 2 references
  1. Madigan C, Ryan M, Owens D, et al. Dietary unsaturated fatty acids in type 2 diabetes: higher levels of postprandial lipoprotein on a linoleic acid-rich sunflower oil diet compared with an oleic acid-rich olive oil diet. Diabetes Care 2000;23:1472-7. PubMed
  2. An J. Anaphylaxis to sunflower seed with tolerance to sunflower oil: A case report. Medicina (Kaunas) 2021;57(7):661. PubMed

See these in context on the Sunflower Oil monograph →

Phosphatidylcholine 15 references
  1. Domino EF, May WW, Demetriou S, et al. Lack of clinically significant improvement of patients with tardive dyskinesia following phosphatidylcholine therapy. Biol Psychiatry 1985;20:1189-96. PubMed
  2. Aronson PJ, Lorincz AL. Promotion of palmar sweating with oral phosphatidylcholine. Acta Derm Venereol 1985;65:19-24. DOI
  3. Hexsel DM, Serra M, de Oliveira Dal'Forno T, et al. Cosmetic uses of injectable phosphatidylcholine on the face. Otolaryngol Clin North Am 2005;38:1119-29. PubMed
  4. Kopera D, Binder B, Toplak H, et al. Histopathologic changes after intralesional application of phosphatidylcholine for lipoma reduction: report of a case. Am J Dermatopathol 2006;28:331-3. PubMed
  5. Rittes PG. The use of phosphatidylcholine for correction of lower lid bulging due to prominent fat pads. Dermatol Surg 2001;27:391-2. PubMed
  6. Rotunda AM, Kolodney MS. Mesotherapy and phosphatidylcholine injections: historical clarification and review. Dermatol Surg 2006;32:465-80. PubMed
  7. Hexsel D, Serra M, Mazzuco R, et al. Phosphatidylcholine in the treatment of localized fat. J Drugs Dermatol 2003;2:511-8.
  8. Hasengschwandtner F. Phosphatidylcholine treatment to induce lipolysis. Cosmet Dermatol 2005;4:308-13. PubMed
  9. Rittes PG. The use of phosphatidylcholine for correction of localized fat deposits. Aesthetic Plast Surg 2003;27:315-8. PubMed
  10. Ablon G, Rotunda AM. Treatment of lower eyelid fat pads using phosphatidylcholine: clinical trial and review. Dermatol Surg 2004;30:422-7. PubMed
  11. Loguercio C, Andreone P, Brisc C, et al. Silybin combined with phosphatidylcholine and vitamin E in patients with nonalcoholic fatty liver disease: a randomized controlled trial. Free Radic Biol Med 2012;52(9):1658-65. PubMed
  12. Panos, J. M., Palson, R., Johnson, R., Portmann, B., and Williams, R. Polyunsaturated phosphatidylcholine for acute alcoholic hepatitis: a double blind randomized placebo controlled trial. Eur.J.Gastroenterol 1990;2:351-355.
  13. Stremmel W, Braun A, Hanemann A, Ehehalt R, Autschbach F, Karner M. Delayed release phosphatidylcholine in chronic-active ulcerative colitis: a randomized, double-blinded, dose finding study. J Clin Gastroenterol 2010;44(5):e101-7. PubMed
  14. Stremmel W, Ehehalt R, Autschbach F, Karner M. Phosphatidylcholine for steroid-refractory chronic ulcerative colitis: a randomized trial. Ann Intern Med. 2007;147(9):603-10. PubMed
  15. Stremmel W, Vural H, Evliyaoglu O, Weiskirchen R. Delayed Release Phosphatidylcholine is Effective for Treatment of Ulcerative Colitis: A Meta-Analysis. Dig Dis 2021;39(5):508-515. PubMed

See these in context on the Phosphatidylcholine monograph →

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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