Foster & Thrive Tussin Guaifenesin 200 mg Cough Syrup – 8 fl oz | Compare to Robitussin

Foster & Thrive Tussin Guaifenesin 200 mg Cough Syrup – 8 fl oz | Compare to Robitussin

Clear chest congestion fast with Foster & Thrive Tussin. Each 10 mL dose contains Guaifenesin 200 mg, the same expectorant found in Robitussin® Mucus + Chest Congestion, but at a lower price. This non-drowsy, DM-free syrup thins mucus and phlegm, making coughs more productive so you can breathe easier. Learn more about alternatives in our guide: Robitussin Generic Alternatives – Complete Guide.

Backed by McKesson quality, this syrup is part of the trusted Foster & Thrive lineup of OTC essentials. Orders ship directly from McKesson with reliable 2–3 business day delivery.

What You’ll Receive

• One (1) bottle of Foster & Thrive Tussin Guaifenesin 200 mg Cough Syrup – 8 fl oz
• Expiration Date: 9/2026 or later
• Ships direct from McKesson with 2–3 business day delivery

Looking for a Better Value?

Save more when you upgrade to multi-packs:

• 8 fl oz 5-Pack – Free Shipping
• 8 fl oz 12-Pack – Free Shipping

We also carry smaller formats: 4 fl oz Single and 4 fl oz 3-Pack.

Key Features

• Compare to Robitussin® Mucus + Chest Congestion
• 200 mg Guaifenesin per 10 mL – effective expectorant
• No Dextromethorphan (DM) – single-ingredient relief
• Non-drowsy, alcohol-free syrup for daytime use
• Backed by McKesson under the Foster & Thrive label

Drug Facts

Active Ingredient (in each 10 mL)

• Guaifenesin, USP – 200 mg
• Purpose: Expectorant

Uses

• Loosens phlegm and mucus
• Thins bronchial secretions to make coughs more productive

Warnings

• Ask a doctor before use if you have:
  • A cough with too much phlegm
  • A persistent or chronic cough (smoking, asthma, bronchitis, emphysema)
• Stop use and ask a doctor if:
  • Cough lasts more than 7 days, recurs, or is accompanied by fever, rash, or headache
• If pregnant or breastfeeding, consult a healthcare provider
• Keep out of reach of children. In case of overdose, contact Poison Control immediately.

Directions

• Shake well before use
• Use only with included dosing cup
• Adults & Children 12+ years: 10–20 mL every 4 hours
• Do not exceed 6 doses in 24 hours
• Children under 12: Do not use

Other Information

• Sodium: 6 mg per 10 mL
• Store between 20–25°C (68–77°F)
• Do not refrigerate

Inactive Ingredients

• Caramel, citric acid anhydrous, dextrose, FD&C Red #40, flavor, glycerin, high fructose corn syrup, menthol, purified water, saccharin sodium, sodium benzoate

Frequently Asked Questions

What does Foster & Thrive Tussin do?

It contains guaifenesin, an expectorant that loosens and thins mucus in the chest and airways, making coughs more productive and relieving congestion.

Is Foster & Thrive Tussin the same as Robitussin?

Yes. Both contain Guaifenesin 200 mg, but Foster & Thrive offers a DM-free formula at a significantly lower price.

Does this syrup cause drowsiness?

No. Guaifenesin is a non-drowsy expectorant. This product contains no DM or sedating antihistamines.

Is this safe for long-term use?

It’s intended for short-term chest congestion relief. Stop use if symptoms persist for more than 7 days or worsen, and consult a doctor.