It is unlikely that pure paracetamol caused your increased heart rate. However, many cold remedies combine paracetamol with decongestants (like pseudoephedrine or phenylephrine). These decongestants can interact with your thyroid medication (Thyronorm), causing a rapid heart rate. This reaction is usually temporary and not dangerous, but you should stop taking that medication. Please check the ingredient label. For safe cold relief, you can take plain paracetamol, use saline nasal sprays, or try steam inhalation. Avoid multi-symptom cold products containing decongestants. If your rapid heart rate persists or you feel dizzy, please consult your doctor.

Your doctor likely lowered your Thyronorm (levothyroxine) because a high T4 level means there is too much active thyroid hormone in your system, which can strain your heart. While a high TSH usually suggests the opposite, protecting you from excess T4 is the immediate safety priority. Since your scans and antibody tests are normal, autoimmune issues or growths are ruled out. Sometimes, the timing of your medication or even daily supplements (like biotin) can cause these temporary, conflicting lab readings. Lowering your dose is a safe step to protect your health while your levels stabilize. Please share any supplements you take with your doctor.

Your snoring is likely related to your underlying thyroid condition rather than your medication, Thyronorm (levothyroxine). An underactive thyroid can sometimes cause mild tissue swelling in the upper airway, leading to snoring. While a weight of 70 kg can also contribute depending on your height, please be reassured that Thyronorm itself does not cause snoring. In fact, as your thyroid levels stabilize with treatment, this symptom may improve. I gently recommend discussing this with your doctor, who can check your thyroid levels and ensure your dosage is perfectly tailored for you.

Take your Thyronorm (levothyroxine) on an empty stomach with water, 30 to 60 minutes before breakfast. Please avoid soy, high-fiber foods, calcium, and iron supplements close to your dose, as they can block its absorption. As your thyroid levels stabilize with this daily medication, your metabolism will improve, which gently helps with weight management, eases fatigue, and reduces anxiety. Be patient with yourself, as it takes a few weeks to feel the full benefits.

Your mild liver enzyme elevations and fatigue are likely due to three connected factors. First, being overweight can cause fatty deposits in the liver, raising enzymes like SGPT. Second, your TSH of 5.5 indicates your hypothyroidism might be slightly under-controlled on Thyronorm, which directly causes fatigue. Lastly, long-term use of pain relievers, like NSAIDs or paracetamol, can certainly stress the liver. I gently encourage you to consult your doctor to discuss adjusting your thyroid therapy, reviewing your pain medications, and exploring gradual lifestyle changes.

Since you have been experiencing this for 15 days, it is important to be gentle with it. For safe pain relief, paracetamol is a suitable option that will not interfere with your Thyronorm. You can also apply a generic topical pain-relief gel, like diclofenac, directly to your shoulder. Applying a warm compress for 15 minutes can also help soothe the muscles. Please avoid heavy lifting or movements that trigger sharp pain. Since the pain has lasted two weeks, I recommend seeing a doctor or physiotherapist for a proper assessment to support your recovery.