What is the Difference Between 7-Keto DHEA and Just DHEA?

Question: Please tell me what is the difference between 7-Keto DHEA and just DHEA?   7-Keto DHEA is what’s called a metabolite of DHEA. In simple terms, that means that when you ingest DHEA, your body...

Why Does Magnesium Keep Me Up?

Question: Can you please explain why I can't sleep if I take any magnesium product at any time of the day? I am beginning to believe that taking several supplements with magnesium stearate in them...

Huperzine A Value?

Question: I recently changed from Huperzine "A" to Maximum Strength Huperzine "A". I had just began taking 4 of the 50 mcg per day. By switching to just one of the Maximum Strength 200 mcg, I believed...

Are Your Vitamins Manufactured In China?

Question: Hello, I was wondering if any of your vitamins or herbs are manufactured in China? If they are do you have a list so when I order from you I won't get any of these Chinese products?   Thank...

Vitamin K2 Question

Question: Is the Vitamin K2 sold by Swanson manufactured in the United States?   We don’t limit most of our manufacturers to only one country of origin, but we do limit them to a quality standard....

How Much Lutein Should I Take?

Question: The Research Update article today mentioned the benefits of lutein and zeaxanthin for macular protection.  How much would be suggested for a 60 yo female, if I may ask?   Unfortunately, the...

Can Zeaxanthin Affect Thyroid Function?

Question: Is there a source of Zeaxanthin that has a negative effect on the thyroid?   We’ve never heard of Zeaxanthin being harmful to the Thyroid as it is a simple carotenoid that is commonly derived...

Question Regarding Swanson Ultra Dr. Stephen Langer's Glutathione Precursor Complex

Question: I am interested in trying Swanson Ultra Dr. Stephen Langer's Glutathione Precursor Complex, but I have read that zinc should be taken in conjunction with N-Acetyl-L-Cysteine (NAC), and I see...

Refrigeration of Supplements

Question: Is refrigeration of supplements ever bad for them. I usually see "store in a cool, dark place"............sounds like a fridge to me.   Actually, a fridge is cold (as opposed to cool) and...

Where Are Swanson Vitamins Made?

Question: I have just ordered my first supplements from Swanson's. Could you please tell me where they are manufactured.     Thank you for the question. The answer really varies from product to...

Why Don't You List Expiration Dates on Supplements?

Swanson Health Products uses a date of manufacture (the date the product in the bottle was produced) rather than an expiration date for its dietary supplement products.  The Food and...

Is It Safe to Take Maca and Chasteberry Together?

Yes, Maca and Chasteberryare perfectly safe to take together. In fact, one of the nice things about supplements is that virtually none of them interact negatively with each other unless it’s listed on...