Adalat retard : Please could anyone let me know... - Thyroid UK

Thyroid UK

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Adalat retard


Please could anyone let me know if they are on adalat retard 20 mg I have been on adalat la for a few years now the chemist can't get them , I feel very anxious and exhausted on these Meds l have no colour very pale , also muzzy headed .i also have underactive thyroid which is not helping .as my THS is fluctuating.cant seem to get my Meds right .any help would be appreciated.

4 Replies

Afraid I didn't even know what the active ingredient is! (Nifedipine - a calcium channel blocker.)

However, a bit of searching found a bit of information. There are other slow release forms of nifedipine. I have absolutely no idea if it would be possible to change?


You're taking them for high blood pressure, I imagine? Do you know that high blood pressure can be caused by hypothyroidism? Are you optimally medicated for your Hypo? Do you have any blood test results to share with us?

TSH fluctuating can be caused by two things :

1. Having Hashimoto's Thyroiditis - aka Autoimmune Thyroiditis. Have you had your antibodies tested?

2. Doctors dosing by the TSH. You will never stabilise your TSH if he does that. Your TSH is too low, he increases by 25 mcg, TSH goes 'too low' (for his liking, not for your health!) and he reduces by 25 mcg again. That could go on forever, never reaching a stable dose. :)


Sounds like you have autoimmune thyroid disease also called Hashimoto's diagnosed by high thyroid antibodies

For full Thyroid evaluation you need TSH, FT4, FT3 plus TPO and TG thyroid antibodies and also very important to test vitamin D, folate, ferritin and B12

Ask GP to test vitamin levels if not been done recently

Private tests are available. Thousands on here forced to do this as NHS often refuses to test FT3 or antibodies or vitamins

Medichecks Thyroid plus ultra vitamin or Blue Horizon Thyroid plus eleven are the most popular choice. DIY finger prick test or option to pay extra for private blood draw. Both companies often have money off offers.

All thyroid tests should ideally be done as early as possible in morning and fasting. When on Levothyroxine, don't take in the 24 hours prior to test, delay and take straight after test. This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip, GP will be unaware)

I used to be on it, but asked to be transferred to felodipine

I was first put on uncoated adalat by a hospital doctor and, despite supply problems, neither pharmacist nor GP questioned the prescription (the uncoated type should NOT be prescribed for hypertension).

I feel I'm about comatose if I take felodipine within six hours of thyroid meds.

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